Built 2026-10-14 (14 October 2026)

Grace Weather Records (USC00103732)

Record envelope, standing records and threshold days for Grace (USC00103732), Idaho, United States, with 120 years of record.

Key Facts for Grace

  • Grace (USC00103732) is a weather station in Idaho, United States at 42.56 latitude and -111.76 longitude, 1,685 m (5,528 ft) above sea level.
  • The station reports from 1907 to 2026, 120 years of record.
  • 1,464 records set at Grace still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Grace set a daily record high minimum temperature of 14.4 C (57.9 F) on 17 June 2026.

About the Station

  • Location: Idaho, United States, 42.56 latitude, -111.76 longitude.
  • Elevation: 1,685 m (5,528 ft).
  • Period of record: 1907 to 2026, 120 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

7 days at or beyond a record
Daily record high and record low at Grace, with 2026 drawn through them The band shows the record high and record low for each calendar day at Grace. The lines show the 2026 daily maximum and minimum. 7 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Grace. The lines show the 2026 daily maximum and minimum. 7 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Grace, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan14.4 C (57.9 F)-36.7 C (-34.1 F)5.6 C (42.1 F)-13.3 C (8.1 F)
Feb16.7 C (62.1 F)-40.0 C (-40.0 F)10.0 C (50.0 F)-17.8 C (0.0 F)
Mar24.4 C (75.9 F)-32.8 C (-27.0 F)24.4 C (75.9 F)-7.8 C (18.0 F)
Apr28.9 C (84.0 F)-18.3 C (-0.9 F)21.1 C (70.0 F)-8.9 C (16.0 F)
May35.0 C (95.0 F)-11.7 C (10.9 F)29.4 C (84.9 F)-0.6 C (30.9 F)
Jun37.8 C (100.0 F)-7.2 C (19.0 F)31.1 C (88.0 F)0.0 C (32.0 F)
Jul39.4 C (102.9 F)-2.2 C (28.0 F)32.2 C (90.0 F)6.7 C (44.1 F)
Aug38.9 C (102.0 F)-3.3 C (26.1 F)n/an/a
Sep36.7 C (98.1 F)-11.7 C (10.9 F)n/an/a
Oct32.2 C (90.0 F)-22.2 C (-8.0 F)n/an/a
Nov26.1 C (79.0 F)-31.7 C (-25.1 F)n/an/a
Dec17.2 C (63.0 F)-40.0 C (-40.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Grace by the year they were set 1,464 records at Grace still stand. 1919 holds the most, with 39. 0102030401907: 281908: 191909: 151910: 171911: 171912: 191913: 281914: 51915: 91916: 121917: 191918: 271919: 391920: 191921: 81922: 251923: 101924: 181925: 71926: 101927: 121928: 81929: 161930: 141931: 111932: 121933: 71934: 201935: 91936: 101937: 151938: 61939: 211940: 61941: 121942: 141943: 71944: 41945: 131946: 81947: 101948: 141949: 201950: 141951: 141952: 101953: 71954: 51955: 201956: 141957: 41958: 91959: 51960: 111961: 51962: 81963: 141964: 101965: 81966: 111967: 21968: 101969: 121970: 121971: 71972: 171973: 71974: 51975: 141976: 131977: 151978: 141979: 191980: 131981: 41982: 191983: 141984: 41985: 121986: 151987: 51988: 101989: 71990: 241991: 61992: 161993: 141994: 81995: 221996: 151997: 51998: 81999: 102000: 132001: 142002: 112003: 252004: 92005: 52006: 142007: 162008: 92009: 142010: 122011: 62012: 182013: 102014: 62015: 192016: 42017: 52018: 52019: 82020: 112021: 62022: 162023: 82024: 22025: 162026: 151907191919311943195519671979199120032015
1,464 records at Grace still stand. 1919 holds the most, with 39.
Standing records at Grace by the year they were set
Year setStanding records
190728
190819
190915
191017
191117
191219
191328
19145
19159
191612
191719
191827
191939
192019
19218
192225
192310
192418
19257
192610
192712
19288
192916
193014
193111
193212
19337
193420
19359
193610
193715
19386
193921
19406
194112
194214
19437
19444
194513
19468
194710
194814
194920
195014
195114
195210
19537
19545
195520
195614
19574
19589
19595
196011
19615
19628
196314
196410
19658
196611
19672
196810
196912
197012
19717
197217
19737
19745
197514
197613
197715
197814
197919
198013
19814
198219
198314
19844
198512
198615
19875
198810
19897
199024
19916
199216
199314
19948
199522
199615
19975
19988
199910
200013
200114
200211
200325
20049
20055
200614
200716
20089
200914
201012
20116
201218
201310
20146
201519
20164
20175
20185
20198
202011
20216
202216
20238
20242
202516
202615

Wettest Day of Each Month

Apr: 71.1 mm (2.8 in)
Record daily precipitation for each month at Grace The wettest day on record for each calendar month at Grace. The most was 71.1 mm (2.8 in) on 20 April 1911. 020406080 Jan: 34.3 mm (1.4 in), 6 January 1909 Jan Feb: 34.3 mm (1.4 in), 1 February 1963 Feb Mar: 53.1 mm (2.1 in), 30 March 1912 Mar Apr: 71.1 mm (2.8 in), 20 April 1911 Apr May: 36.6 mm (1.4 in), 18 May 1996 May Jun: 34.8 mm (1.4 in), 12 June 1997 Jun Jul: 40.6 mm (1.6 in), 20 July 1922 Jul Aug: 43.9 mm (1.7 in), 22 August 2004 Aug Sep: 50.8 mm (2.0 in), 16 September 2015 Sep Oct: 36.1 mm (1.4 in), 16 October 2016 Oct Nov: 29.2 mm (1.1 in), 17 November 1942 Nov Dec: 29.0 mm (1.1 in), 24 December 1955 Dec
The wettest day on record for each calendar month at Grace. The most was 71.1 mm (2.8 in) on 20 April 1911.
Record daily precipitation for each month at Grace
MonthRecord daily precipitation (mm)Date
Jan34.3 mm (1.4 in)6 January 1909
Feb34.3 mm (1.4 in)1 February 1963
Mar53.1 mm (2.1 in)30 March 1912
Apr71.1 mm (2.8 in)20 April 1911
May36.6 mm (1.4 in)18 May 1996
Jun34.8 mm (1.4 in)12 June 1997
Jul40.6 mm (1.6 in)20 July 1922
Aug43.9 mm (1.7 in)22 August 2004
Sep50.8 mm (2.0 in)16 September 2015
Oct36.1 mm (1.4 in)16 October 2016
Nov29.2 mm (1.1 in)17 November 1942
Dec29.0 mm (1.1 in)24 December 1955

Period of Record Coverage

1907 to 2026
Days with data per year at Grace 120 years of record at Grace, 1907 to 2026. 15 years have data for under 90 percent of days and are left out of rankings: 1913, 1914, 1915, 1916, 1918, 1929, 1964, 1976 and others. 1907: 338 of 365 days1908: 353 of 366 days1909: 359 of 365 days1910: 331 of 365 days1911: 341 of 365 days1912: 363 of 366 days1913: 273 of 365 days1914: 300 of 365 days1915: 296 of 365 days1916: 322 of 366 days1917: 339 of 365 days1918: 295 of 365 days1919: 362 of 365 days1920: 363 of 366 days1921: 358 of 365 days1922: 357 of 365 days1923: 362 of 365 days1924: 365 of 366 days1925: 365 of 365 days1926: 342 of 365 days1927: 338 of 365 days1928: 335 of 366 days1929: 276 of 365 days1930: 360 of 365 days1931: 364 of 365 days1932: 366 of 366 days1933: 365 of 365 days1934: 365 of 365 days1935: 364 of 365 days1936: 365 of 366 days1937: 365 of 365 days1938: 364 of 365 days1939: 365 of 365 days1940: 366 of 366 days1941: 365 of 365 days1942: 365 of 365 days1943: 365 of 365 days1944: 365 of 366 days1945: 365 of 365 days1946: 363 of 365 days1947: 365 of 365 days1948: 365 of 366 days1949: 364 of 365 days1950: 364 of 365 days1951: 365 of 365 days1952: 366 of 366 days1953: 365 of 365 days1954: 365 of 365 days1955: 365 of 365 days1956: 361 of 366 days1957: 364 of 365 days1958: 352 of 365 days1959: 357 of 365 days1960: 364 of 366 days1961: 365 of 365 days1962: 331 of 365 days1963: 363 of 365 days1964: 273 of 366 days1965: 364 of 365 days1966: 364 of 365 days1967: 363 of 365 days1968: 365 of 366 days1969: 364 of 365 days1970: 365 of 365 days1971: 365 of 365 days1972: 363 of 366 days1973: 363 of 365 days1974: 362 of 365 days1975: 361 of 365 days1976: 281 of 366 days1977: 363 of 365 days1978: 330 of 365 days1979: 362 of 365 days1980: 364 of 366 days1981: 356 of 365 days1982: 326 of 365 days1983: 331 of 365 days1984: 346 of 366 days1985: 240 of 365 days1986: 329 of 365 days1987: 358 of 365 days1988: 360 of 366 days1989: 359 of 365 days1990: 361 of 365 days1991: 343 of 365 days1992: 344 of 366 days1993: 309 of 365 days1994: 288 of 365 days1995: 318 of 365 days1996: 331 of 366 days1997: 340 of 365 days1998: 353 of 365 days1999: 353 of 365 days2000: 353 of 366 days2001: 353 of 365 days2002: 342 of 365 days2003: 352 of 365 days2004: 361 of 366 days2005: 353 of 365 days2006: 352 of 365 days2007: 354 of 365 days2008: 332 of 366 days2009: 343 of 365 days2010: 362 of 365 days2011: 363 of 365 days2012: 359 of 366 days2013: 362 of 365 days2014: 364 of 365 days2015: 297 of 365 days2016: 365 of 366 days2017: 365 of 365 days2018: 363 of 365 days2019: 364 of 365 days2020: 366 of 366 days2021: 365 of 365 days2022: 362 of 365 days2023: 359 of 365 days2024: 355 of 366 days2025: 359 of 365 days2026: 171 of 365 days19201935195019651980199520102025
120 years of record at Grace, 1907 to 2026. 15 years have data for under 90 percent of days and are left out of rankings: 1913, 1914, 1915, 1916, 1918, 1929, 1964, 1976 and others.
Days with data per year at Grace
YearDays with dataShare of yearComplete
190733893%Yes
190835396%Yes
190935998%Yes
191033191%Yes
191134193%Yes
191236399%Yes
191327375%No
191430082%No
191529681%No
191632288%No
191733993%Yes
191829581%No
191936299%Yes
192036399%Yes
192135898%Yes
192235798%Yes
192336299%Yes
1924365100%Yes
1925365100%Yes
192634294%Yes
192733893%Yes
192833592%Yes
192927676%No
193036099%Yes
1931364100%Yes
1932366100%Yes
1933365100%Yes
1934365100%Yes
1935364100%Yes
1936365100%Yes
1937365100%Yes
1938364100%Yes
1939365100%Yes
1940366100%Yes
1941365100%Yes
1942365100%Yes
1943365100%Yes
1944365100%Yes
1945365100%Yes
194636399%Yes
1947365100%Yes
1948365100%Yes
1949364100%Yes
1950364100%Yes
1951365100%Yes
1952366100%Yes
1953365100%Yes
1954365100%Yes
1955365100%Yes
195636199%Yes
1957364100%Yes
195835296%Yes
195935798%Yes
196036499%Yes
1961365100%Yes
196233191%Yes
196336399%Yes
196427375%No
1965364100%Yes
1966364100%Yes
196736399%Yes
1968365100%Yes
1969364100%Yes
1970365100%Yes
1971365100%Yes
197236399%Yes
197336399%Yes
197436299%Yes
197536199%Yes
197628177%No
197736399%Yes
197833090%Yes
197936299%Yes
198036499%Yes
198135698%Yes
198232689%No
198333191%Yes
198434695%Yes
198524066%No
198632990%Yes
198735898%Yes
198836098%Yes
198935998%Yes
199036199%Yes
199134394%Yes
199234494%Yes
199330985%No
199428879%No
199531887%No
199633190%Yes
199734093%Yes
199835397%Yes
199935397%Yes
200035396%Yes
200135397%Yes
200234294%Yes
200335296%Yes
200436199%Yes
200535397%Yes
200635296%Yes
200735497%Yes
200833291%Yes
200934394%Yes
201036299%Yes
201136399%Yes
201235998%Yes
201336299%Yes
2014364100%Yes
201529781%No
2016365100%Yes
2017365100%Yes
201836399%Yes
2019364100%Yes
2020366100%Yes
2021365100%Yes
202236299%Yes
202335998%Yes
202435597%Yes
202535998%Yes
202617147%No

Latest Records

20
Latest records at Grace
DateStationRecordValueBeat old record byOld record stoodSignificance
17 June 2026Grace, USdaily high min14.4 C (57.9 F)1.6 C (2.9 F)92 years41 of 100 (Notable)
12 May 2026Grace, USdaily high max (Tie)29.4 C (84.9 F)tie24 years4 of 100 (Routine)
4 May 2026Grace, USdaily high min8.9 C (48.0 F)0.6 C (1.1 F)100 years41 of 100 (Notable)
29 March 2026Grace, USdaily high min4.4 C (39.9 F)1.6 C (2.9 F)100 years42 of 100 (Notable)
25 March 2026Grace, USdaily high max23.3 C (73.9 F)2.7 C (4.9 F)13 years19 of 100 (Routine)
25 March 2026Grace, USmonthly high min (Tie)6.7 C (44.1 F)tie31 years7 of 100 (Routine)
24 March 2026Grace, USdaily high max21.7 C (71.1 F)1.1 C (2.0 F)21 years18 of 100 (Routine)
24 March 2026Grace, USmonthly high min (Tie)6.7 C (44.1 F)tie31 years7 of 100 (Routine)
23 March 2026Grace, USdaily high min4.4 C (39.9 F)1.1 C (2.0 F)13 years15 of 100 (Routine)
22 March 2026Grace, USdaily high min (Tie)2.8 C (37.0 F)tie96 years9 of 100 (Routine)
21 March 2026Grace, USdaily high max23.3 C (73.9 F)3.9 C (7.0 F)16 years22 of 100 (Routine)
21 March 2026Grace, USdaily high min4.4 C (39.9 F)0.5 C (0.9 F)8 years12 of 100 (Routine)
20 March 2026Grace, USmonthly high max (Tie)24.4 C (75.9 F)tie0 years5 of 100 (Routine)
19 March 2026Grace, USdaily high min3.9 C (39.0 F)0.6 C (1.1 F)119 years41 of 100 (Notable)
19 March 2026Grace, USmonthly high max24.4 C (75.9 F)1.6 C (2.9 F)0 years23 of 100 (Routine)
18 March 2026Grace, USmonthly high max22.8 C (73.0 F)0.6 C (1.1 F)39 years32 of 100 (Routine)
12 March 2026Grace, USdaily high min (Tie)2.8 C (37.0 F)tie11 years3 of 100 (Routine)
28 February 2026Grace, USdaily high min (Tie)2.2 C (36.0 F)tie118 years10 of 100 (Routine)
25 February 2026Grace, USdaily high min1.7 C (35.1 F)0.6 C (1.1 F)76 years32 of 100 (Routine)
16 February 2026Grace, USdaily rain15.7 mm (0.6 in)6.6 mm (0.26 in)68 years20 of 100 (Routine)

Climate Trend

96 complete years, 1908 to 2025
Annual mean temperature at Grace as warming stripes, 1908 to 2025 One stripe for each of 96 complete years at Grace, 1908 to 2025. Blue stripes are years cooler than the station's own mean of 6.1 C (43.0 F); red stripes are warmer. The coolest year was 1944, at 4.3 C (39.8 F), and the warmest was 1934, at 8.0 C (46.4 F). The strongest colour marks a difference of 1.9 C (3.4 F). 1908: 6.6 C, +0.5 C from the station mean1909: 6.9 C, +0.8 C from the station mean1912: 6.1 C, -0.1 C from the station mean1919: 7.7 C, +1.6 C from the station mean1920: 5.8 C, -0.4 C from the station mean1921: 6.2 C, +0.1 C from the station mean1922: 4.6 C, -1.5 C from the station mean1923: 4.6 C, -1.5 C from the station mean1924: 5.1 C, -1.0 C from the station mean1925: 6.7 C, +0.5 C from the station mean1930: 4.7 C, -1.4 C from the station mean1931: 5.5 C, -0.7 C from the station mean1932: 4.6 C, -1.6 C from the station mean1933: 5.7 C, -0.4 C from the station mean1934: 8.0 C, +1.9 C from the station mean1935: 5.7 C, -0.5 C from the station mean1936: 5.9 C, -0.3 C from the station mean1937: 5.4 C, -0.7 C from the station mean1938: 6.2 C, +0.1 C from the station mean1939: 6.6 C, +0.5 C from the station mean1940: 7.2 C, +1.1 C from the station mean1941: 5.7 C, -0.5 C from the station mean1942: 4.9 C, -1.3 C from the station mean1943: 6.0 C, -0.2 C from the station mean1944: 4.3 C, -1.8 C from the station mean1945: 4.7 C, -1.4 C from the station mean1946: 5.8 C, -0.3 C from the station mean1947: 5.8 C, -0.3 C from the station mean1948: 5.1 C, -1.0 C from the station mean1949: 5.2 C, -1.0 C from the station mean1950: 5.4 C, -0.8 C from the station mean1951: 4.8 C, -1.3 C from the station mean1952: 4.9 C, -1.2 C from the station mean1953: 6.8 C, +0.6 C from the station mean1954: 6.4 C, +0.3 C from the station mean1955: 4.4 C, -1.8 C from the station mean1956: 5.1 C, -1.0 C from the station mean1957: 5.5 C, -0.6 C from the station mean1958: 6.6 C, +0.5 C from the station mean1959: 6.4 C, +0.3 C from the station mean1960: 5.8 C, -0.3 C from the station mean1961: 6.5 C, +0.4 C from the station mean1963: 6.9 C, +0.7 C from the station mean1965: 5.9 C, -0.2 C from the station mean1966: 6.0 C, -0.1 C from the station mean1967: 6.0 C, -0.1 C from the station mean1968: 5.4 C, -0.7 C from the station mean1969: 6.1 C, 0.0 C from the station mean1970: 5.9 C, -0.2 C from the station mean1971: 5.3 C, -0.8 C from the station mean1972: 5.9 C, -0.3 C from the station mean1973: 5.6 C, -0.5 C from the station mean1974: 6.2 C, +0.1 C from the station mean1975: 5.1 C, -1.0 C from the station mean1977: 6.7 C, +0.6 C from the station mean1979: 5.5 C, -0.6 C from the station mean1980: 6.3 C, +0.1 C from the station mean1981: 7.3 C, +1.2 C from the station mean1982: 5.4 C, -0.8 C from the station mean1984: 4.6 C, -1.5 C from the station mean1987: 7.1 C, +1.0 C from the station mean1988: 6.9 C, +0.7 C from the station mean1989: 6.5 C, +0.4 C from the station mean1990: 6.8 C, +0.6 C from the station mean1991: 6.1 C, 0.0 C from the station mean1992: 7.1 C, +1.0 C from the station mean1995: 7.8 C, +1.7 C from the station mean1996: 7.0 C, +0.8 C from the station mean1997: 6.2 C, 0.0 C from the station mean1998: 7.1 C, +1.0 C from the station mean1999: 7.1 C, +1.0 C from the station mean2000: 7.2 C, +1.1 C from the station mean2001: 7.1 C, +0.9 C from the station mean2002: 6.5 C, +0.3 C from the station mean2003: 7.8 C, +1.6 C from the station mean2004: 6.0 C, -0.1 C from the station mean2005: 5.9 C, -0.3 C from the station mean2006: 6.6 C, +0.4 C from the station mean2007: 7.4 C, +1.3 C from the station mean2008: 5.8 C, -0.3 C from the station mean2009: 5.3 C, -0.8 C from the station mean2010: 6.8 C, +0.6 C from the station mean2011: 5.6 C, -0.5 C from the station mean2012: 7.5 C, +1.3 C from the station mean2013: 5.4 C, -0.7 C from the station mean2014: 7.2 C, +1.0 C from the station mean2016: 7.1 C, +1.0 C from the station mean2017: 7.0 C, +0.9 C from the station mean2018: 7.0 C, +0.9 C from the station mean2019: 5.7 C, -0.5 C from the station mean2020: 6.7 C, +0.6 C from the station mean2021: 7.4 C, +1.3 C from the station mean2022: 5.7 C, -0.5 C from the station mean2023: 5.3 C, -0.8 C from the station mean2024: 7.3 C, +1.2 C from the station mean2025: 7.8 C, +1.6 C from the station mean190819201930194019501960197019801990200020102020
One stripe for each of 96 complete years at Grace, 1908 to 2025. Blue stripes are years cooler than the station's own mean of 6.1 C (43.0 F); red stripes are warmer. The coolest year was 1944, at 4.3 C (39.8 F), and the warmest was 1934, at 8.0 C (46.4 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at Grace as warming stripes, 1908 to 2025
YearAnnual mean temperatureDifference from the station mean
19086.6 C+0.51 C
19096.9 C+0.80 C
19126.1 C-0.05 C
19197.7 C+1.58 C
19205.8 C-0.38 C
19216.2 C+0.09 C
19224.6 C-1.50 C
19234.6 C-1.53 C
19245.1 C-1.01 C
19256.7 C+0.55 C
19304.7 C-1.40 C
19315.5 C-0.65 C
19324.6 C-1.57 C
19335.7 C-0.41 C
19348.0 C+1.89 C
19355.7 C-0.45 C
19365.9 C-0.26 C
19375.4 C-0.69 C
19386.2 C+0.07 C
19396.6 C+0.47 C
19407.2 C+1.11 C
19415.7 C-0.47 C
19424.9 C-1.28 C
19436.0 C-0.17 C
19444.3 C-1.80 C
19454.7 C-1.41 C
19465.8 C-0.33 C
19475.8 C-0.32 C
19485.1 C-1.01 C
19495.2 C-0.96 C
19505.4 C-0.75 C
19514.8 C-1.31 C
19524.9 C-1.22 C
19536.8 C+0.65 C
19546.4 C+0.27 C
19554.4 C-1.75 C
19565.1 C-0.99 C
19575.5 C-0.63 C
19586.6 C+0.48 C
19596.4 C+0.28 C
19605.8 C-0.30 C
19616.5 C+0.39 C
19636.9 C+0.74 C
19655.9 C-0.19 C
19666.0 C-0.14 C
19676.0 C-0.12 C
19685.4 C-0.69 C
19696.1 C+0.01 C
19705.9 C-0.20 C
19715.3 C-0.82 C
19725.9 C-0.27 C
19735.6 C-0.54 C
19746.2 C+0.10 C
19755.1 C-1.03 C
19776.7 C+0.61 C
19795.5 C-0.62 C
19806.3 C+0.15 C
19817.3 C+1.21 C
19825.4 C-0.75 C
19844.6 C-1.54 C
19877.1 C+0.96 C
19886.9 C+0.74 C
19896.5 C+0.38 C
19906.8 C+0.63 C
19916.1 C-0.04 C
19927.1 C+0.99 C
19957.8 C+1.71 C
19967.0 C+0.83 C
19976.2 C+0.05 C
19987.1 C+1.00 C
19997.1 C+0.98 C
20007.2 C+1.09 C
20017.1 C+0.93 C
20026.5 C+0.35 C
20037.8 C+1.64 C
20046.0 C-0.12 C
20055.9 C-0.25 C
20066.6 C+0.45 C
20077.4 C+1.27 C
20085.8 C-0.33 C
20095.3 C-0.82 C
20106.8 C+0.64 C
20115.6 C-0.54 C
20127.5 C+1.33 C
20135.4 C-0.71 C
20147.2 C+1.02 C
20167.1 C+1.00 C
20177.0 C+0.90 C
20187.0 C+0.90 C
20195.7 C-0.45 C
20206.7 C+0.59 C
20217.4 C+1.31 C
20225.7 C-0.47 C
20235.3 C-0.80 C
20247.3 C+1.19 C
20257.8 C+1.65 C

The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1908 to 2025. In Fahrenheit: 0.2 F (0.1 to 0.3) per decade. The slope is a straight line fitted to 96 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Grace
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.1 C (0.1 to 0.2) per decade0.2 F (0.1 to 0.3) per decade1908 to 202596Rise
Mean daily maximum0.2 C (0.1 to 0.2) per decade0.3 F (0.1 to 0.4) per decade1908 to 202596Rise
Mean daily minimum0.05 C (0.00 to 0.11) per decade0.09 F (-0.01 to 0.20) per decade1908 to 202596Not clearly different from zero

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1907 to 2026
Yearly extremes at Grace: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)39.4 C (102.9 F)191934.4 C (93.9 F)120
Coldest night (TNn)-40.0 C (-40.0 F)1933-27.2 C (-17.0 F)120
Wettest day (Rx1day)71.1 mm (2.8 in)191123.4 mm (0.9 in)120
Wettest five days (Rx5day)82.3 mm (3.2 in)201640.3 mm (1.6 in)120
Longest dry spell (CDD)77 days193930 days120

Hottest day (TXx)

Hottest day (TXx) at Grace by year The hottest day of the year at Grace, 1907 to 2026. The record is 39.4 C (102.9 F) in 1919, marked on the chart; the median year is 34.4 C (93.9 F). 3032.53537.540192019401960198020002020Record: 39.4 C (102.9 F) in 1919
The hottest day of the year at Grace, 1907 to 2026. The record is 39.4 C (102.9 F) in 1919, marked on the chart; the median year is 34.4 C (93.9 F).
Hottest day (TXx) at Grace by year
YearHottest day (TXx)
190737.2 C (99.0 F)
190835.6 C (96.1 F)
190937.2 C (99.0 F)
191035.6 C (96.1 F)
191134.4 C (93.9 F)
191233.3 C (91.9 F)
191338.9 C (102.0 F)
191435.0 C (95.0 F)
191536.7 C (98.1 F)
191635.6 C (96.1 F)
191736.7 C (98.1 F)
191837.8 C (100.0 F)
191939.4 C (102.9 F)
192035.6 C (96.1 F)
192132.8 C (91.0 F)
192234.4 C (93.9 F)
192333.9 C (93.0 F)
192434.4 C (93.9 F)
192536.1 C (97.0 F)
192635.0 C (95.0 F)
192732.8 C (91.0 F)
192834.4 C (93.9 F)
192935.0 C (95.0 F)
193034.4 C (93.9 F)
193137.2 C (99.0 F)
193233.3 C (91.9 F)
193335.6 C (96.1 F)
193436.7 C (98.1 F)
193535.0 C (95.0 F)
193635.0 C (95.0 F)
193733.9 C (93.0 F)
193831.7 C (89.1 F)
193935.0 C (95.0 F)
194034.4 C (93.9 F)
194132.2 C (90.0 F)
194233.3 C (91.9 F)
194333.3 C (91.9 F)
194432.2 C (90.0 F)
194532.8 C (91.0 F)
194633.3 C (91.9 F)
194732.8 C (91.0 F)
194832.2 C (90.0 F)
194932.8 C (91.0 F)
195032.2 C (90.0 F)
195132.8 C (91.0 F)
195230.6 C (87.1 F)
195331.7 C (89.1 F)
195433.3 C (91.9 F)
195532.8 C (91.0 F)
195631.1 C (88.0 F)
195731.1 C (88.0 F)
195833.3 C (91.9 F)
195935.0 C (95.0 F)
196035.0 C (95.0 F)
196135.6 C (96.1 F)
196233.9 C (93.0 F)
196332.2 C (90.0 F)
196432.2 C (90.0 F)
196532.2 C (90.0 F)
196633.3 C (91.9 F)
196733.9 C (93.0 F)
196831.7 C (89.1 F)
196933.3 C (91.9 F)
197032.2 C (90.0 F)
197133.9 C (93.0 F)
197233.9 C (93.0 F)
197333.3 C (91.9 F)
197434.4 C (93.9 F)
197532.2 C (90.0 F)
197633.3 C (91.9 F)
197732.2 C (90.0 F)
197833.3 C (91.9 F)
197933.9 C (93.0 F)
198032.2 C (90.0 F)
198132.8 C (91.0 F)
198236.1 C (97.0 F)
198334.4 C (93.9 F)
198431.1 C (88.0 F)
198532.8 C (91.0 F)
198636.1 C (97.0 F)
198731.7 C (89.1 F)
198837.2 C (99.0 F)
198937.2 C (99.0 F)
199036.1 C (97.0 F)
199134.4 C (93.9 F)
199236.7 C (98.1 F)
199332.2 C (90.0 F)
199436.1 C (97.0 F)
199535.6 C (96.1 F)
199637.2 C (99.0 F)
199736.1 C (97.0 F)
199837.8 C (100.0 F)
199936.1 C (97.0 F)
200038.9 C (102.0 F)
200138.9 C (102.0 F)
200239.4 C (102.9 F)
200338.9 C (102.0 F)
200435.0 C (95.0 F)
200537.2 C (99.0 F)
200638.3 C (100.9 F)
200739.4 C (102.9 F)
200836.7 C (98.1 F)
200936.7 C (98.1 F)
201036.1 C (97.0 F)
201136.1 C (97.0 F)
201236.1 C (97.0 F)
201334.4 C (93.9 F)
201435.6 C (96.1 F)
201536.1 C (97.0 F)
201637.2 C (99.0 F)
201734.4 C (93.9 F)
201837.8 C (100.0 F)
201935.0 C (95.0 F)
202036.1 C (97.0 F)
202135.6 C (96.1 F)
202234.4 C (93.9 F)
202333.9 C (93.0 F)
202437.8 C (100.0 F)
202535.0 C (95.0 F)
202632.2 C (90.0 F)

Coldest night (TNn)

Coldest night (TNn) at Grace by year The coldest night of the year at Grace, 1907 to 2026. The record is -40.0 C (-40.0 F) in 1933, marked on the chart; the median year is -27.2 C (-17.0 F). -40-30-20-10192019401960198020002020Record: -40.0 C (-40.0 F) in 1933
The coldest night of the year at Grace, 1907 to 2026. The record is -40.0 C (-40.0 F) in 1933, marked on the chart; the median year is -27.2 C (-17.0 F).
Coldest night (TNn) at Grace by year
YearColdest night (TNn)
1907-27.2 C (-17.0 F)
1908-30.0 C (-22.0 F)
1909-24.4 C (-11.9 F)
1910-26.7 C (-16.1 F)
1911-24.4 C (-11.9 F)
1912-22.8 C (-9.0 F)
1913-30.0 C (-22.0 F)
1914-23.9 C (-11.0 F)
1915-26.1 C (-15.0 F)
1916-26.7 C (-16.1 F)
1917-28.9 C (-20.0 F)
1918-20.6 C (-5.1 F)
1919-31.1 C (-24.0 F)
1920-24.4 C (-11.9 F)
1921-28.3 C (-18.9 F)
1922-36.1 C (-33.0 F)
1923-30.6 C (-23.1 F)
1924-36.7 C (-34.1 F)
1925-20.6 C (-5.1 F)
1926-25.0 C (-13.0 F)
1927-33.9 C (-29.0 F)
1928-27.2 C (-17.0 F)
1929-27.8 C (-18.0 F)
1930-36.1 C (-33.0 F)
1931-26.7 C (-16.1 F)
1932-32.2 C (-26.0 F)
1933-40.0 C (-40.0 F)
1934-22.2 C (-8.0 F)
1935-30.0 C (-22.0 F)
1936-26.1 C (-15.0 F)
1937-36.1 C (-33.0 F)
1938-20.6 C (-5.1 F)
1939-26.7 C (-16.1 F)
1940-27.2 C (-17.0 F)
1941-26.1 C (-15.0 F)
1942-33.9 C (-29.0 F)
1943-27.2 C (-17.0 F)
1944-26.1 C (-15.0 F)
1945-27.8 C (-18.0 F)
1946-23.9 C (-11.0 F)
1947-26.1 C (-15.0 F)
1948-28.9 C (-20.0 F)
1949-32.8 C (-27.0 F)
1950-29.4 C (-20.9 F)
1951-29.4 C (-20.9 F)
1952-28.9 C (-20.0 F)
1953-21.1 C (-6.0 F)
1954-24.4 C (-11.9 F)
1955-31.7 C (-25.1 F)
1956-30.0 C (-22.0 F)
1957-26.7 C (-16.1 F)
1958-23.9 C (-11.0 F)
1959-26.7 C (-16.1 F)
1960-31.7 C (-25.1 F)
1961-25.6 C (-14.1 F)
1962-31.7 C (-25.1 F)
1963-34.4 C (-29.9 F)
1964-30.6 C (-23.1 F)
1965-24.4 C (-11.9 F)
1966-27.8 C (-18.0 F)
1967-25.0 C (-13.0 F)
1968-27.8 C (-18.0 F)
1969-25.6 C (-14.1 F)
1970-27.2 C (-17.0 F)
1971-32.2 C (-26.0 F)
1972-35.6 C (-32.1 F)
1973-28.9 C (-20.0 F)
1974-29.4 C (-20.9 F)
1975-30.6 C (-23.1 F)
1976-26.1 C (-15.0 F)
1977-27.8 C (-18.0 F)
1978-35.0 C (-31.0 F)
1979-36.1 C (-33.0 F)
1980-31.1 C (-24.0 F)
1981-22.8 C (-9.0 F)
1982-34.4 C (-29.9 F)
1983-31.7 C (-25.1 F)
1984-36.7 C (-34.1 F)
1985-37.8 C (-36.0 F)
1986-23.9 C (-11.0 F)
1987-27.2 C (-17.0 F)
1988-28.9 C (-20.0 F)
1989-32.8 C (-27.0 F)
1990-40.0 C (-40.0 F)
1991-30.0 C (-22.0 F)
1992-26.7 C (-16.1 F)
1993-28.9 C (-20.0 F)
1994-25.0 C (-13.0 F)
1995-22.2 C (-8.0 F)
1996-31.1 C (-24.0 F)
1997-23.9 C (-11.0 F)
1998-27.2 C (-17.0 F)
1999-22.2 C (-8.0 F)
2000-20.6 C (-5.1 F)
2001-27.2 C (-17.0 F)
2002-31.7 C (-25.1 F)
2003-24.4 C (-11.9 F)
2004-26.7 C (-16.1 F)
2005-27.8 C (-18.0 F)
2006-26.1 C (-15.0 F)
2007-28.9 C (-20.0 F)
2008-29.4 C (-20.9 F)
2009-30.0 C (-22.0 F)
2010-27.8 C (-18.0 F)
2011-31.1 C (-24.0 F)
2012-24.4 C (-11.9 F)
2013-31.1 C (-24.0 F)
2014-25.6 C (-14.1 F)
2015-26.1 C (-15.0 F)
2016-25.0 C (-13.0 F)
2017-32.8 C (-27.0 F)
2018-22.8 C (-9.0 F)
2019-27.2 C (-17.0 F)
2020-23.9 C (-11.0 F)
2021-20.0 C (-4.0 F)
2022-25.6 C (-14.1 F)
2023-32.8 C (-27.0 F)
2024-26.7 C (-16.1 F)
2025-24.4 C (-11.9 F)
2026-17.8 C (0.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Grace by year The wettest day of the year at Grace, 1907 to 2026. The record is 71.1 mm (2.8 in) in 1911, marked on the chart; the median year is 23.4 mm (0.9 in). 020406080192019401960198020002020Record: 71.1 mm (2.8 in) in 1911
The wettest day of the year at Grace, 1907 to 2026. The record is 71.1 mm (2.8 in) in 1911, marked on the chart; the median year is 23.4 mm (0.9 in).
Wettest day (Rx1day) at Grace by year
YearWettest day (Rx1day)
190730.5 mm (1.2 in)
190827.2 mm (1.1 in)
190934.3 mm (1.4 in)
191017.0 mm (0.7 in)
191171.1 mm (2.8 in)
191253.1 mm (2.1 in)
191310.2 mm (0.4 in)
191417.5 mm (0.7 in)
191521.1 mm (0.8 in)
191619.3 mm (0.8 in)
191721.6 mm (0.9 in)
191825.9 mm (1.0 in)
191916.5 mm (0.6 in)
192018.0 mm (0.7 in)
192128.2 mm (1.1 in)
192240.6 mm (1.6 in)
192321.8 mm (0.9 in)
192418.8 mm (0.7 in)
192518.0 mm (0.7 in)
192631.0 mm (1.2 in)
192716.8 mm (0.7 in)
192824.6 mm (1.0 in)
192926.9 mm (1.1 in)
193036.6 mm (1.4 in)
193132.0 mm (1.3 in)
193214.0 mm (0.6 in)
193322.9 mm (0.9 in)
193425.7 mm (1.0 in)
193512.7 mm (0.5 in)
193626.9 mm (1.1 in)
193717.8 mm (0.7 in)
193820.8 mm (0.8 in)
193921.6 mm (0.9 in)
194020.1 mm (0.8 in)
194114.7 mm (0.6 in)
194229.2 mm (1.1 in)
194324.9 mm (1.0 in)
194424.9 mm (1.0 in)
194525.4 mm (1.0 in)
194633.0 mm (1.3 in)
194741.7 mm (1.6 in)
194825.4 mm (1.0 in)
194924.1 mm (0.9 in)
195015.5 mm (0.6 in)
195113.0 mm (0.5 in)
195222.6 mm (0.9 in)
195317.3 mm (0.7 in)
195425.9 mm (1.0 in)
195529.0 mm (1.1 in)
195612.2 mm (0.5 in)
195730.7 mm (1.2 in)
195822.6 mm (0.9 in)
195918.0 mm (0.7 in)
196017.3 mm (0.7 in)
196124.6 mm (1.0 in)
196222.4 mm (0.9 in)
196334.3 mm (1.4 in)
196428.2 mm (1.1 in)
196530.5 mm (1.2 in)
196615.5 mm (0.6 in)
196725.4 mm (1.0 in)
196825.7 mm (1.0 in)
196916.5 mm (0.6 in)
197016.0 mm (0.6 in)
197122.9 mm (0.9 in)
197226.9 mm (1.1 in)
197331.8 mm (1.3 in)
197420.3 mm (0.8 in)
197515.2 mm (0.6 in)
197623.1 mm (0.9 in)
197720.8 mm (0.8 in)
197823.1 mm (0.9 in)
197917.5 mm (0.7 in)
198024.6 mm (1.0 in)
198122.9 mm (0.9 in)
198233.0 mm (1.3 in)
198325.7 mm (1.0 in)
198430.2 mm (1.2 in)
198528.7 mm (1.1 in)
198622.9 mm (0.9 in)
198719.6 mm (0.8 in)
198820.3 mm (0.8 in)
198922.9 mm (0.9 in)
199014.5 mm (0.6 in)
199120.3 mm (0.8 in)
199226.7 mm (1.1 in)
199323.9 mm (0.9 in)
199428.7 mm (1.1 in)
199515.7 mm (0.6 in)
199636.6 mm (1.4 in)
199734.8 mm (1.4 in)
199825.9 mm (1.0 in)
199933.5 mm (1.3 in)
200016.5 mm (0.6 in)
200116.3 mm (0.6 in)
200226.4 mm (1.0 in)
200315.5 mm (0.6 in)
200443.9 mm (1.7 in)
200524.4 mm (1.0 in)
200616.8 mm (0.7 in)
200720.6 mm (0.8 in)
200816.3 mm (0.6 in)
200920.1 mm (0.8 in)
201018.5 mm (0.7 in)
201123.9 mm (0.9 in)
201220.3 mm (0.8 in)
201324.1 mm (0.9 in)
201422.9 mm (0.9 in)
201550.8 mm (2.0 in)
201636.1 mm (1.4 in)
201738.1 mm (1.5 in)
201823.6 mm (0.9 in)
201944.7 mm (1.8 in)
202026.2 mm (1.0 in)
202132.5 mm (1.3 in)
202219.3 mm (0.8 in)
202322.9 mm (0.9 in)
202424.1 mm (0.9 in)
202523.6 mm (0.9 in)
202615.7 mm (0.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Grace by year The wettest five days of the year at Grace, 1907 to 2026. The record is 82.3 mm (3.2 in) in 2016, marked on the chart; the median year is 40.3 mm (1.6 in). 20406080100192019401960198020002020Record: 82.3 mm (3.2 in) in 2016
The wettest five days of the year at Grace, 1907 to 2026. The record is 82.3 mm (3.2 in) in 2016, marked on the chart; the median year is 40.3 mm (1.6 in).
Wettest five days (Rx5day) at Grace by year
YearWettest five days (Rx5day)
190747.2 mm (1.9 in)
190828.5 mm (1.1 in)
190952.9 mm (2.1 in)
191044.2 mm (1.7 in)
191142.9 mm (1.7 in)
191253.1 mm (2.1 in)
191322.9 mm (0.9 in)
191438.4 mm (1.5 in)
191534.0 mm (1.3 in)
191647.2 mm (1.9 in)
191747.6 mm (1.9 in)
191832.0 mm (1.3 in)
191930.8 mm (1.2 in)
192046.0 mm (1.8 in)
192161.7 mm (2.4 in)
192243.6 mm (1.7 in)
192344.2 mm (1.7 in)
192423.4 mm (0.9 in)
192534.3 mm (1.4 in)
192647.6 mm (1.9 in)
192741.9 mm (1.6 in)
192833.3 mm (1.3 in)
192948.2 mm (1.9 in)
193043.7 mm (1.7 in)
193138.7 mm (1.5 in)
193231.0 mm (1.2 in)
193340.2 mm (1.6 in)
193453.2 mm (2.1 in)
193524.9 mm (1.0 in)
193638.4 mm (1.5 in)
193738.2 mm (1.5 in)
193849.3 mm (1.9 in)
193927.4 mm (1.1 in)
194026.4 mm (1.0 in)
194138.3 mm (1.5 in)
194266.0 mm (2.6 in)
194349.1 mm (1.9 in)
194458.4 mm (2.3 in)
194547.3 mm (1.9 in)
194646.1 mm (1.8 in)
194748.5 mm (1.9 in)
194857.2 mm (2.3 in)
194962.5 mm (2.5 in)
195033.0 mm (1.3 in)
195129.9 mm (1.2 in)
195229.5 mm (1.2 in)
195334.5 mm (1.4 in)
195432.5 mm (1.3 in)
195574.5 mm (2.9 in)
195626.7 mm (1.1 in)
195750.5 mm (2.0 in)
195830.5 mm (1.2 in)
195939.8 mm (1.6 in)
196031.4 mm (1.2 in)
196145.1 mm (1.8 in)
196243.4 mm (1.7 in)
196358.4 mm (2.3 in)
196456.9 mm (2.2 in)
196579.0 mm (3.1 in)
196630.3 mm (1.2 in)
196757.7 mm (2.3 in)
196840.4 mm (1.6 in)
196937.6 mm (1.5 in)
197029.7 mm (1.2 in)
197148.8 mm (1.9 in)
197228.7 mm (1.1 in)
197354.2 mm (2.1 in)
197434.0 mm (1.3 in)
197524.9 mm (1.0 in)
197638.3 mm (1.5 in)
197759.5 mm (2.3 in)
197829.2 mm (1.1 in)
197929.7 mm (1.2 in)
198072.1 mm (2.8 in)
198152.1 mm (2.1 in)
198249.0 mm (1.9 in)
198352.8 mm (2.1 in)
198436.9 mm (1.5 in)
198534.5 mm (1.4 in)
198657.7 mm (2.3 in)
198757.0 mm (2.2 in)
198829.3 mm (1.2 in)
198929.4 mm (1.2 in)
199025.9 mm (1.0 in)
199132.3 mm (1.3 in)
199242.9 mm (1.7 in)
199359.5 mm (2.3 in)
199436.3 mm (1.4 in)
199532.2 mm (1.3 in)
199664.3 mm (2.5 in)
199742.7 mm (1.7 in)
199836.6 mm (1.4 in)
199959.8 mm (2.4 in)
200026.1 mm (1.0 in)
200129.9 mm (1.2 in)
200255.6 mm (2.2 in)
200325.2 mm (1.0 in)
200470.1 mm (2.8 in)
200553.4 mm (2.1 in)
200635.3 mm (1.4 in)
200721.9 mm (0.9 in)
200838.3 mm (1.5 in)
200946.8 mm (1.8 in)
201027.8 mm (1.1 in)
201136.1 mm (1.4 in)
201244.4 mm (1.7 in)
201329.4 mm (1.2 in)
201470.5 mm (2.8 in)
201538.4 mm (1.5 in)
201682.3 mm (3.2 in)
201745.2 mm (1.8 in)
201832.0 mm (1.3 in)
201981.8 mm (3.2 in)
202029.0 mm (1.1 in)
202165.8 mm (2.6 in)
202241.4 mm (1.6 in)
202343.2 mm (1.7 in)
202439.4 mm (1.6 in)
202535.0 mm (1.4 in)
202620.6 mm (0.8 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Grace by year The longest dry spell of the year at Grace, 1907 to 2026. The record is 77 days in 1939, marked on the chart; the median year is 30 days. 020406080192019401960198020002020Record: 77 days in 1939
The longest dry spell of the year at Grace, 1907 to 2026. The record is 77 days in 1939, marked on the chart; the median year is 30 days.
Longest dry spell (CDD) at Grace by year
YearLongest dry spell (CDD)
190739 days
190837 days
190927 days
191047 days
191137 days
191220 days
191342 days
191441 days
191539 days
191632 days
191731 days
191836 days
191959 days
192024 days
192149 days
192237 days
192331 days
192428 days
192519 days
192631 days
192723 days
192821 days
192936 days
193023 days
193143 days
193229 days
193334 days
193436 days
193526 days
193634 days
193727 days
193820 days
193977 days
194048 days
194117 days
194227 days
194337 days
194437 days
194518 days
194625 days
194737 days
194838 days
194927 days
195026 days
195128 days
195262 days
195335 days
195426 days
195521 days
195626 days
195724 days
195841 days
195931 days
196019 days
196131 days
196241 days
196343 days
196430 days
196527 days
196632 days
196733 days
196826 days
196930 days
197028 days
197130 days
197225 days
197325 days
197462 days
197528 days
197661 days
197749 days
197852 days
197934 days
198026 days
198131 days
198216 days
198317 days
198417 days
198525 days
198622 days
198749 days
198843 days
198925 days
199021 days
199128 days
199229 days
199328 days
199420 days
199525 days
199641 days
199720 days
199818 days
199933 days
200027 days
200134 days
200241 days
200339 days
200445 days
200523 days
200623 days
200747 days
200838 days
200942 days
201033 days
201122 days
201226 days
201316 days
201422 days
201515 days
201622 days
201719 days
201864 days
201930 days
202027 days
202131 days
202239 days
202323 days
202429 days
202523 days
202634 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

96 years with a frost

Across 96 years with a frost, the median last spring frost at Grace falls on 7 June and the median first autumn frost on 14 September, which leaves a median of 98 days between them.

In 1995 to 2025 the median growing season was 94 days. That is 8 days fewer than in 1908 to 1949.

Fitted over all years, the growing season changes by +1.1 days per decade at this station.

Frost dates and growing season at Grace
MeasureMedian, all yearsEarliest period (1908 to 1949)Recent period (1995 to 2025)Recent against earliestFitted trend
Last spring frost7 June5 June11 June6 days later0.0 days per decade
First autumn frost14 September14 September16 September2 days later+1.1 days per decade
Growing days98 days102 days94 days8 days fewer+1.1 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

105 years, 1907 to 2025

A day with at least 23.2 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 51.3 mm (2.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Grace: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years23.2 mm (0.9 in)
5 years30.2 mm (1.2 in)
10 years35.1 mm (1.4 in)
25 years41.4 mm (1.6 in)
50 years46.3 mm (1.8 in)
100 years51.3 mm (2.0 in)

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 105 years of values from 1907 to 2025.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 71.1 mm (2.8 in) in 1911; 44.7 mm (1.8 in) in 2019; 43.9 mm (1.7 in) in 2004.

Station Changes

1 suspected

One change was suspected in the annual mean temperature of Grace, at 1972. Each is measured against neighbouring stations.

  • Relative to 5 neighbouring stations, the station's annual mean temperature from 1972 ran 0.3 C (0.5 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Grace, against neighbouring stations
YearShift (C)Shift (F)StrengthNeighbours
1972+0.3+0.5likely5

Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.

Climate Twins

2010 to 2025 against 1961 to 1990

Over 2010 to 2025, Grace had a mean temperature of 6.6 C (43.9 F) and 406.8 mm (16.0 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Sundance (United States, 631 km away), Harrison (United States, 644 km away) and Seminoe Dam (United States, 401 km away).

Climate twins of Grace: stations whose 1961 to 1990 climate is closest to its 2010 to 2025 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
SundanceUnited States631 km (392 mi)6.6 C (43.9 F)450.7 mm (17.7 in)0.68
HarrisonUnited States644 km (400 mi)6.7 C (44.1 F)426.9 mm (16.8 in)0.68
Seminoe DamUnited States401 km (249 mi)6.5 C (43.6 F)331.3 mm (13.0 in)0.73

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

  • Data for Grace standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Grace threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-12 (12 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-12).