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Isisford Post Office Weather Records (ASN00036026)

Record envelope, standing records and threshold days for Isisford Post Office (ASN00036026), Australia, with 142 years of record.

Key Facts for Isisford Post Office

  • Isisford Post Office (ASN00036026) is a weather station in Australia at -24.26 latitude and 144.44 longitude, 203 m (666 ft) above sea level.
  • The station reports from 1885 to 2026, 142 years of record.
  • 1,464 records set at Isisford Post Office still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Isisford Post Office set a daily record high maximum temperature of 35.7 C (96.3 F) on 6 September 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: Australia, -24.26 latitude, 144.44 longitude.
  • Elevation: 203 m (666 ft).
  • Period of record: 1885 to 2026, 142 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

6 days at or beyond a record
Daily record high and record low at Isisford Post Office, with 2026 drawn through them The band shows the record high and record low for each calendar day at Isisford Post Office. The lines show the 2026 daily maximum and minimum. 6 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -1001020304050 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Isisford Post Office. The lines show the 2026 daily maximum and minimum. 6 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Isisford Post Office, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan47.0 C (116.6 F)14.7 C (58.5 F)42.1 C (107.8 F)20.6 C (69.1 F)
Feb46.1 C (115.0 F)13.6 C (56.5 F)43.2 C (109.8 F)22.0 C (71.6 F)
Mar44.6 C (112.3 F)4.0 C (39.2 F)36.9 C (98.4 F)9.6 C (49.3 F)
Apr40.0 C (104.0 F)3.9 C (39.0 F)37.5 C (99.5 F)12.4 C (54.3 F)
May36.4 C (97.5 F)1.4 C (34.5 F)32.0 C (89.6 F)6.1 C (43.0 F)
Jun33.3 C (91.9 F)-1.4 C (29.5 F)30.6 C (87.1 F)4.2 C (39.6 F)
Jul33.4 C (92.1 F)-1.7 C (28.9 F)27.0 C (80.6 F)2.4 C (36.3 F)
Aug37.7 C (99.9 F)-2.0 C (28.4 F)31.4 C (88.5 F)3.6 C (38.5 F)
Sep41.0 C (105.8 F)1.6 C (34.9 F)36.0 C (96.8 F)11.0 C (51.8 F)
Oct43.6 C (110.5 F)5.0 C (41.0 F)32.1 C (89.8 F)19.2 C (66.6 F)
Nov46.0 C (114.8 F)7.0 C (44.6 F)n/an/a
Dec46.6 C (115.9 F)8.4 C (47.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Isisford Post Office by the year they were set 1,464 records at Isisford Post Office still stand. 2016 holds the most, with 56. 02040601957: 231958: 261959: 51960: 311961: 211962: 141963: 111964: 151965: 131966: 191967: 71968: 221969: 191970: 121971: 211972: 241973: 141974: 201975: 281976: 481977: 101978: 151979: 191980: 151981: 161982: 121983: 161984: 181985: 171986: 171987: 111988: 121989: 141990: 171991: 151992: 91993: 171994: 251995: 321996: 281997: 81998: 331999: 212000: 272001: 212002: 192003: 262004: 222005: 262006: 192007: 292008: 162009: 262010: 342011: 172012: 182013: 272014: 212015: 352016: 562017: 342018: 282019: 212020: 242021: 222022: 232023: 232024: 232025: 252026: 121957196419711978198519921999200620132020
1,464 records at Isisford Post Office still stand. 2016 holds the most, with 56.
Standing records at Isisford Post Office by the year they were set
Year setStanding records
195723
195826
19595
196031
196121
196214
196311
196415
196513
196619
19677
196822
196919
197012
197121
197224
197314
197420
197528
197648
197710
197815
197919
198015
198116
198212
198316
198418
198517
198617
198711
198812
198914
199017
199115
19929
199317
199425
199532
199628
19978
199833
199921
200027
200121
200219
200326
200422
200526
200619
200729
200816
200926
201034
201117
201218
201327
201421
201535
201656
201734
201828
201921
202024
202122
202223
202323
202423
202525
202612

All-Time Record Progression

3 new records
When Isisford Post Office set new all-time records 3 all-time records were set at Isisford Post Office between 18 January 1950 and 3 December 2020. Each dot is a new record. Record daily precipitationRecord low maximum temperatureRecord high minimum temperature18 January 1950: Record daily precipitation 203.7 mm (8.0 in)7 July 2010: Record low maximum temperature 10.2 C (50.4 F)3 December 2020: Record high minimum temperature 33.1 C (91.6 F)19501960197019801990200020102020
3 all-time records were set at Isisford Post Office between 18 January 1950 and 3 December 2020. Each dot is a new record.
When Isisford Post Office set new all-time records
DateKindDetail
1950-01-18Record daily precipitationRecord daily precipitation 203.7 mm (8.0 in)
2010-07-07Record low maximum temperatureRecord low maximum temperature 10.2 C (50.4 F)
2020-12-03Record high minimum temperatureRecord high minimum temperature 33.1 C (91.6 F)

Wettest Day of Each Month

Jan: 203.7 mm (8.0 in)
Record daily precipitation for each month at Isisford Post Office The wettest day on record for each calendar month at Isisford Post Office. The most was 203.7 mm (8.0 in) on 18 January 1950. 0100200300 Jan: 203.7 mm (8.0 in), 18 January 1950 Jan Feb: 133.1 mm (5.2 in), 23 February 1955 Feb Mar: 146.4 mm (5.8 in), 27 March 2019 Mar Apr: 166.6 mm (6.6 in), 3 April 1891 Apr May: 124.2 mm (4.9 in), 22 May 1990 May Jun: 99.8 mm (3.9 in), 4 June 1923 Jun Jul: 68.8 mm (2.7 in), 25 July 1950 Jul Aug: 59.2 mm (2.3 in), 30 August 1903 Aug Sep: 72.4 mm (2.9 in), 16 September 1903 Sep Oct: 123.2 mm (4.9 in), 21 October 1920 Oct Nov: 98.6 mm (3.9 in), 28 November 2010 Nov Dec: 132.3 mm (5.2 in), 26 December 1971 Dec
The wettest day on record for each calendar month at Isisford Post Office. The most was 203.7 mm (8.0 in) on 18 January 1950.
Record daily precipitation for each month at Isisford Post Office
MonthRecord daily precipitation (mm)Date
Jan203.7 mm (8.0 in)18 January 1950
Feb133.1 mm (5.2 in)23 February 1955
Mar146.4 mm (5.8 in)27 March 2019
Apr166.6 mm (6.6 in)3 April 1891
May124.2 mm (4.9 in)22 May 1990
Jun99.8 mm (3.9 in)4 June 1923
Jul68.8 mm (2.7 in)25 July 1950
Aug59.2 mm (2.3 in)30 August 1903
Sep72.4 mm (2.9 in)16 September 1903
Oct123.2 mm (4.9 in)21 October 1920
Nov98.6 mm (3.9 in)28 November 2010
Dec132.3 mm (5.2 in)26 December 1971

Period of Record Coverage

1957 to 2026
Days with data per year at Isisford Post Office 70 years of record at Isisford Post Office, 1957 to 2026. 36 years have data for under 90 percent of days and are left out of rankings: 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966 and others. 1957: 365 of 365 days1958: 351 of 365 days1959: 322 of 365 days1960: 309 of 366 days1961: 309 of 365 days1962: 312 of 365 days1963: 309 of 365 days1964: 300 of 366 days1965: 289 of 365 days1966: 290 of 365 days1967: 291 of 365 days1968: 253 of 366 days1969: 265 of 365 days1970: 272 of 365 days1971: 290 of 365 days1972: 302 of 366 days1973: 272 of 365 days1974: 185 of 365 days1975: 288 of 365 days1976: 259 of 366 days1977: 250 of 365 days1978: 229 of 365 days1979: 263 of 365 days1980: 326 of 366 days1981: 341 of 365 days1982: 284 of 365 days1983: 271 of 365 days1984: 256 of 366 days1985: 236 of 365 days1986: 230 of 365 days1987: 202 of 365 days1988: 196 of 366 days1989: 184 of 365 days1990: 210 of 365 days1991: 249 of 365 days1992: 255 of 366 days1993: 287 of 365 days1994: 363 of 365 days1995: 365 of 365 days1996: 363 of 366 days1997: 365 of 365 days1998: 365 of 365 days1999: 365 of 365 days2000: 362 of 366 days2001: 361 of 365 days2002: 358 of 365 days2003: 359 of 365 days2004: 354 of 366 days2005: 361 of 365 days2006: 357 of 365 days2007: 316 of 365 days2008: 364 of 366 days2009: 358 of 365 days2010: 354 of 365 days2011: 361 of 365 days2012: 354 of 366 days2013: 353 of 365 days2014: 361 of 365 days2015: 346 of 365 days2016: 346 of 366 days2017: 353 of 365 days2018: 342 of 365 days2019: 345 of 365 days2020: 352 of 366 days2021: 350 of 365 days2022: 334 of 365 days2023: 333 of 365 days2024: 337 of 366 days2025: 350 of 365 days2026: 260 of 365 days1960197019801990200020102020
70 years of record at Isisford Post Office, 1957 to 2026. 36 years have data for under 90 percent of days and are left out of rankings: 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966 and others.
Days with data per year at Isisford Post Office
YearDays with dataShare of yearComplete
1957365100%Yes
195835196%Yes
195932288%No
196030984%No
196130985%No
196231285%No
196330985%No
196430082%No
196528979%No
196629079%No
196729180%No
196825369%No
196926573%No
197027275%No
197129079%No
197230283%No
197327275%No
197418551%No
197528879%No
197625971%No
197725068%No
197822963%No
197926372%No
198032689%No
198134193%Yes
198228478%No
198327174%No
198425670%No
198523665%No
198623063%No
198720255%No
198819654%No
198918450%No
199021058%No
199124968%No
199225570%No
199328779%No
199436399%Yes
1995365100%Yes
199636399%Yes
1997365100%Yes
1998365100%Yes
1999365100%Yes
200036299%Yes
200136199%Yes
200235898%Yes
200335998%Yes
200435497%Yes
200536199%Yes
200635798%Yes
200731687%No
200836499%Yes
200935898%Yes
201035497%Yes
201136199%Yes
201235497%Yes
201335397%Yes
201436199%Yes
201534695%Yes
201634695%Yes
201735397%Yes
201834294%Yes
201934595%Yes
202035296%Yes
202135096%Yes
202233492%Yes
202333391%Yes
202433792%Yes
202535096%Yes
202626071%No

Latest Records

20
Latest records at Isisford Post Office
DateStationRecordValueBeat old record byOld record stoodSignificance
6 September 2026Isisford Post Office, AUdaily high max (Provisional)35.7 C (96.3 F)0.3 C (0.5 F)25 years14 of 100 (Routine)
5 September 2026Isisford Post Office, AUdaily high max (Provisional)34.8 C (94.6 F)0.4 C (0.7 F)56 years25 of 100 (Routine)
25 August 2026Isisford Post Office, AUdaily high min (Provisional)17.9 C (64.2 F)0.3 C (0.5 F)31 years16 of 100 (Routine)
24 August 2026Isisford Post Office, AUdaily high min (Provisional)19.0 C (66.2 F)3.4 C (6.1 F)13 years19 of 100 (Routine)
3 July 2026Isisford Post Office, AUdaily high min18.0 C (64.4 F)3.8 C (6.8 F)40 years28 of 100 (Routine)
2 July 2026Isisford Post Office, AUdaily high min18.8 C (65.8 F)2.0 C (3.6 F)40 years23 of 100 (Routine)
30 June 2026Isisford Post Office, AUdaily high min (Tie)15.6 C (60.1 F)tie11 years2 of 100 (Routine)
19 June 2026Isisford Post Office, AUdaily low max15.9 C (60.6 F)1.9 C (3.4 F)63 years30 of 100 (Routine)
2 June 2026Isisford Post Office, AUdaily high max30.6 C (87.1 F)1.5 C (2.7 F)32 years20 of 100 (Routine)
13 May 2026Isisford Post Office, AUdaily high min19.4 C (66.9 F)0.3 C (0.5 F)39 years18 of 100 (Routine)
8 May 2026Isisford Post Office, AUdaily low max21.2 C (70.2 F)0.2 C (0.4 F)3 years7 of 100 (Routine)
17 April 2026Isisford Post Office, AUdaily high min21.3 C (70.3 F)0.7 C (1.3 F)68 years29 of 100 (Routine)
16 April 2026Isisford Post Office, AUdaily high min20.7 C (69.3 F)0.1 C (0.2 F)56 years23 of 100 (Routine)
11 April 2026Isisford Post Office, AUdaily high max37.5 C (99.5 F)0.3 C (0.5 F)23 years13 of 100 (Routine)
29 March 2026Isisford Post Office, AUdaily low min9.6 C (49.3 F)0.8 C (1.4 F)17 years14 of 100 (Routine)
28 March 2026Isisford Post Office, AUdaily low min10.9 C (51.6 F)1.1 C (2.0 F)24 years17 of 100 (Routine)
12 February 2026Isisford Post Office, AUdaily high min27.9 C (82.2 F)0.1 C (0.2 F)56 years24 of 100 (Routine)
25 November 2025Isisford Post Office, AUdaily high min29.5 C (85.1 F)2.4 C (4.3 F)11 years15 of 100 (Routine)
25 November 2025Isisford Post Office, AUdaily high max (Tie)42.6 C (108.7 F)tie10 years2 of 100 (Routine)
24 November 2025Isisford Post Office, AUdaily high max44.6 C (112.3 F)1.8 C (3.2 F)4 years11 of 100 (Routine)

Climate Trend

44 complete years, 1957 to 2025
Annual mean temperature at Isisford Post Office as warming stripes, 1957 to 2025 One stripe for each of 44 complete years at Isisford Post Office, 1957 to 2025. Blue stripes are years cooler than the station's own mean of 23.6 C (74.5 F); red stripes are warmer. The coolest year was 1961, at 22.2 C (72.0 F), and the warmest was 2017, at 24.9 C (76.9 F). The strongest colour marks a difference of 1.5 C (2.7 F). 1957: 23.1 C, -0.6 C from the station mean1958: 23.4 C, -0.3 C from the station mean1961: 22.2 C, -1.4 C from the station mean1962: 22.9 C, -0.7 C from the station mean1963: 22.3 C, -1.3 C from the station mean1964: 23.1 C, -0.5 C from the station mean1965: 23.5 C, -0.1 C from the station mean1966: 22.5 C, -1.1 C from the station mean1967: 23.5 C, -0.1 C from the station mean1972: 23.0 C, -0.7 C from the station mean1980: 23.8 C, +0.2 C from the station mean1981: 23.5 C, -0.2 C from the station mean1982: 23.6 C, -0.1 C from the station mean1992: 23.6 C, -0.1 C from the station mean1994: 22.9 C, -0.7 C from the station mean1995: 24.1 C, +0.5 C from the station mean1996: 23.5 C, -0.1 C from the station mean1997: 23.4 C, -0.3 C from the station mean1998: 24.1 C, +0.4 C from the station mean1999: 22.9 C, -0.7 C from the station mean2000: 22.8 C, -0.8 C from the station mean2001: 23.1 C, -0.6 C from the station mean2002: 24.0 C, +0.4 C from the station mean2003: 24.6 C, +1.0 C from the station mean2004: 24.2 C, +0.5 C from the station mean2006: 24.7 C, +1.1 C from the station mean2008: 23.2 C, -0.5 C from the station mean2009: 24.0 C, +0.3 C from the station mean2010: 22.6 C, -1.0 C from the station mean2011: 22.7 C, -0.9 C from the station mean2012: 22.8 C, -0.8 C from the station mean2013: 24.6 C, +0.9 C from the station mean2014: 24.6 C, +0.9 C from the station mean2015: 24.7 C, +1.1 C from the station mean2016: 24.5 C, +0.8 C from the station mean2017: 24.9 C, +1.3 C from the station mean2018: 24.6 C, +1.0 C from the station mean2019: 24.3 C, +0.6 C from the station mean2020: 24.3 C, +0.7 C from the station mean2021: 23.7 C, +0.1 C from the station mean2022: 23.4 C, -0.3 C from the station mean2023: 24.0 C, +0.4 C from the station mean2024: 24.9 C, +1.3 C from the station mean2025: 24.2 C, +0.5 C from the station mean1957197019801990200020102020
One stripe for each of 44 complete years at Isisford Post Office, 1957 to 2025. Blue stripes are years cooler than the station's own mean of 23.6 C (74.5 F); red stripes are warmer. The coolest year was 1961, at 22.2 C (72.0 F), and the warmest was 2017, at 24.9 C (76.9 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Isisford Post Office as warming stripes, 1957 to 2025
YearAnnual mean temperatureDifference from the station mean
195723.1 C-0.57 C
195823.4 C-0.29 C
196122.2 C-1.43 C
196222.9 C-0.71 C
196322.3 C-1.31 C
196423.1 C-0.50 C
196523.5 C-0.14 C
196622.5 C-1.14 C
196723.5 C-0.12 C
197223.0 C-0.67 C
198023.8 C+0.20 C
198123.5 C-0.19 C
198223.6 C-0.07 C
199223.6 C-0.08 C
199422.9 C-0.73 C
199524.1 C+0.45 C
199623.5 C-0.10 C
199723.4 C-0.29 C
199824.1 C+0.43 C
199922.9 C-0.71 C
200022.8 C-0.82 C
200123.1 C-0.58 C
200224.0 C+0.35 C
200324.6 C+0.95 C
200424.2 C+0.53 C
200624.7 C+1.09 C
200823.2 C-0.47 C
200924.0 C+0.31 C
201022.6 C-1.05 C
201122.7 C-0.91 C
201222.8 C-0.83 C
201324.6 C+0.93 C
201424.6 C+0.92 C
201524.7 C+1.08 C
201624.5 C+0.84 C
201724.9 C+1.29 C
201824.6 C+0.96 C
201924.3 C+0.61 C
202024.3 C+0.69 C
202123.7 C+0.06 C
202223.4 C-0.28 C
202324.0 C+0.35 C
202424.9 C+1.26 C
202524.2 C+0.53 C

The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1957 to 2025. In Fahrenheit: 0.4 F (0.2 to 0.5) per decade. The slope is a straight line fitted to 44 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Isisford Post Office
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.2 C (0.1 to 0.3) per decade0.4 F (0.2 to 0.5) per decade1957 to 202544Rise
Mean daily maximum0.16 C (0.04 to 0.27) per decade0.3 F (0.1 to 0.5) per decade1957 to 202544Rise
Mean daily minimum0.3 C (0.2 to 0.3) per decade0.5 F (0.3 to 0.6) per decade1957 to 202544Rise

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

1885 to 2026
Yearly extremes at Isisford Post Office: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)47.0 C (116.6 F)197343.5 C (110.3 F)70
Coldest night (TNn)-2.0 C (28.4 F)19740.3 C (32.5 F)70
Wettest day (Rx1day)203.7 mm (8.0 in)195062.2 mm (2.4 in)141
Wettest five days (Rx5day)303.8 mm (12.0 in)189194.4 mm (3.7 in)141
Longest dry spell (CDD)196 days190265 days141

Hottest day (TXx)

Hottest day (TXx) at Isisford Post Office by year The hottest day of the year at Isisford Post Office, 1885 to 2026. The record is 47.0 C (116.6 F) in 1973, marked on the chart; the median year is 43.5 C (110.3 F). 37.54042.54547.51900192019401960198020002020Record: 47.0 C (116.6 F) in 1973
The hottest day of the year at Isisford Post Office, 1885 to 2026. The record is 47.0 C (116.6 F) in 1973, marked on the chart; the median year is 43.5 C (110.3 F).
Hottest day (TXx) at Isisford Post Office by year
YearHottest day (TXx)
1885n/a
1887n/a
1888n/a
1889n/a
1890n/a
1891n/a
1892n/a
1893n/a
1894n/a
1895n/a
1896n/a
1897n/a
1898n/a
1899n/a
1900n/a
1901n/a
1902n/a
1903n/a
1904n/a
1905n/a
1906n/a
1907n/a
1908n/a
1909n/a
1910n/a
1911n/a
1912n/a
1913n/a
1914n/a
1915n/a
1916n/a
1917n/a
1918n/a
1919n/a
1920n/a
1921n/a
1922n/a
1923n/a
1924n/a
1925n/a
1926n/a
1927n/a
1928n/a
1929n/a
1930n/a
1931n/a
1932n/a
1933n/a
1934n/a
1935n/a
1936n/a
1937n/a
1938n/a
1939n/a
1940n/a
1941n/a
1942n/a
1943n/a
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
195743.9 C (111.0 F)
195842.8 C (109.0 F)
195942.2 C (108.0 F)
196044.4 C (111.9 F)
196142.8 C (109.0 F)
196243.9 C (111.0 F)
196342.8 C (109.0 F)
196443.3 C (109.9 F)
196545.0 C (113.0 F)
196642.4 C (108.3 F)
196745.1 C (113.2 F)
196843.3 C (109.9 F)
196943.3 C (109.9 F)
197042.9 C (109.2 F)
197142.2 C (108.0 F)
197246.0 C (114.8 F)
197347.0 C (116.6 F)
197442.0 C (107.6 F)
197542.4 C (108.3 F)
197643.0 C (109.4 F)
197742.5 C (108.5 F)
197843.6 C (110.5 F)
197945.5 C (113.9 F)
198043.5 C (110.3 F)
198144.0 C (111.2 F)
198245.0 C (113.0 F)
198343.2 C (109.8 F)
198443.5 C (110.3 F)
198543.5 C (110.3 F)
198641.8 C (107.2 F)
198743.4 C (110.1 F)
198844.1 C (111.4 F)
198943.6 C (110.5 F)
199044.5 C (112.1 F)
199143.6 C (110.5 F)
199242.5 C (108.5 F)
199341.3 C (106.3 F)
199443.4 C (110.1 F)
199545.2 C (113.4 F)
199644.6 C (112.3 F)
199744.0 C (111.2 F)
199843.0 C (109.4 F)
199941.8 C (107.2 F)
200040.6 C (105.1 F)
200142.9 C (109.2 F)
200244.0 C (111.2 F)
200345.7 C (114.3 F)
200442.6 C (108.7 F)
200544.4 C (111.9 F)
200646.0 C (114.8 F)
200742.5 C (108.5 F)
200842.9 C (109.2 F)
200943.4 C (110.1 F)
201038.1 C (100.6 F)
201141.5 C (106.7 F)
201243.3 C (109.9 F)
201346.6 C (115.9 F)
201446.6 C (115.9 F)
201544.6 C (112.3 F)
201644.3 C (111.7 F)
201746.1 C (115.0 F)
201846.0 C (114.8 F)
201944.0 C (111.2 F)
202044.9 C (112.8 F)
202142.9 C (109.2 F)
202245.2 C (113.4 F)
202346.0 C (114.8 F)
202443.2 C (109.8 F)
202545.8 C (114.4 F)
202643.2 C (109.8 F)

Coldest night (TNn)

Coldest night (TNn) at Isisford Post Office by year The coldest night of the year at Isisford Post Office, 1885 to 2026. The record is -2.0 C (28.4 F) in 1974, marked on the chart; the median year is 0.3 C (32.5 F). -20241900192019401960198020002020Record: -2.0 C (28.4 F) in 1974
The coldest night of the year at Isisford Post Office, 1885 to 2026. The record is -2.0 C (28.4 F) in 1974, marked on the chart; the median year is 0.3 C (32.5 F).
Coldest night (TNn) at Isisford Post Office by year
YearColdest night (TNn)
1885n/a
1887n/a
1888n/a
1889n/a
1890n/a
1891n/a
1892n/a
1893n/a
1894n/a
1895n/a
1896n/a
1897n/a
1898n/a
1899n/a
1900n/a
1901n/a
1902n/a
1903n/a
1904n/a
1905n/a
1906n/a
1907n/a
1908n/a
1909n/a
1910n/a
1911n/a
1912n/a
1913n/a
1914n/a
1915n/a
1916n/a
1917n/a
1918n/a
1919n/a
1920n/a
1921n/a
1922n/a
1923n/a
1924n/a
1925n/a
1926n/a
1927n/a
1928n/a
1929n/a
1930n/a
1931n/a
1932n/a
1933n/a
1934n/a
1935n/a
1936n/a
1937n/a
1938n/a
1939n/a
1940n/a
1941n/a
1942n/a
1943n/a
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
19571.1 C (34.0 F)
19581.7 C (35.1 F)
19590.0 C (32.0 F)
19600.0 C (32.0 F)
1961-1.1 C (30.0 F)
19622.2 C (36.0 F)
19630.0 C (32.0 F)
19641.1 C (34.0 F)
1965-0.6 C (30.9 F)
1966-1.7 C (28.9 F)
19670.6 C (33.1 F)
1968-1.7 C (28.9 F)
19692.2 C (36.0 F)
19700.6 C (33.1 F)
1971-1.4 C (29.5 F)
1972-1.1 C (30.0 F)
19734.0 C (39.2 F)
1974-2.0 C (28.4 F)
19750.3 C (32.5 F)
1976-1.0 C (30.2 F)
19770.0 C (32.0 F)
19781.5 C (34.7 F)
19790.0 C (32.0 F)
19801.0 C (33.8 F)
19810.0 C (32.0 F)
1982-0.4 C (31.3 F)
19830.0 C (32.0 F)
1984-1.1 C (30.0 F)
1985-0.1 C (31.8 F)
1986-0.5 C (31.1 F)
1987-0.9 C (30.4 F)
19883.0 C (37.4 F)
19891.0 C (33.8 F)
19900.6 C (33.1 F)
1991-0.4 C (31.3 F)
1992-0.5 C (31.1 F)
19931.2 C (34.2 F)
19940.0 C (32.0 F)
19950.9 C (33.6 F)
19961.2 C (34.2 F)
19970.0 C (32.0 F)
1998-0.9 C (30.4 F)
19990.6 C (33.1 F)
20000.3 C (32.5 F)
2001-0.8 C (30.6 F)
2002-1.0 C (30.2 F)
2003-0.4 C (31.3 F)
2004-0.4 C (31.3 F)
20051.5 C (34.7 F)
20063.5 C (38.3 F)
20070.5 C (32.9 F)
2008-0.7 C (30.7 F)
20091.4 C (34.5 F)
20101.9 C (35.4 F)
20111.3 C (34.3 F)
20120.0 C (32.0 F)
20132.1 C (35.8 F)
2014-0.5 C (31.1 F)
20151.5 C (34.7 F)
20162.3 C (36.1 F)
20171.9 C (35.4 F)
20180.1 C (32.2 F)
20190.0 C (32.0 F)
20201.6 C (34.9 F)
20210.3 C (32.5 F)
20221.4 C (34.5 F)
20232.4 C (36.3 F)
20241.2 C (34.2 F)
20250.9 C (33.6 F)
20262.4 C (36.3 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Isisford Post Office by year The wettest day of the year at Isisford Post Office, 1885 to 2026. The record is 203.7 mm (8.0 in) in 1950, marked on the chart; the median year is 62.2 mm (2.4 in). 01002003001900192019401960198020002020Record: 203.7 mm (8.0 in) in 1950
The wettest day of the year at Isisford Post Office, 1885 to 2026. The record is 203.7 mm (8.0 in) in 1950, marked on the chart; the median year is 62.2 mm (2.4 in).
Wettest day (Rx1day) at Isisford Post Office by year
YearWettest day (Rx1day)
18850.0 mm (0.00 in)
188769.1 mm (2.7 in)
188822.9 mm (0.9 in)
188962.0 mm (2.4 in)
1890142.2 mm (5.6 in)
1891166.6 mm (6.6 in)
189288.9 mm (3.5 in)
189366.0 mm (2.6 in)
1894108.0 mm (4.3 in)
189565.0 mm (2.6 in)
189676.2 mm (3.0 in)
189751.6 mm (2.0 in)
1898124.5 mm (4.9 in)
189938.1 mm (1.5 in)
190055.4 mm (2.2 in)
190144.5 mm (1.8 in)
190235.1 mm (1.4 in)
190372.4 mm (2.9 in)
190455.9 mm (2.2 in)
190535.1 mm (1.4 in)
190681.8 mm (3.2 in)
190743.7 mm (1.7 in)
190865.0 mm (2.6 in)
190947.0 mm (1.9 in)
191071.1 mm (2.8 in)
191181.3 mm (3.2 in)
191272.9 mm (2.9 in)
191394.0 mm (3.7 in)
191495.3 mm (3.8 in)
191557.4 mm (2.3 in)
191666.0 mm (2.6 in)
191744.7 mm (1.8 in)
191888.6 mm (3.5 in)
191944.5 mm (1.8 in)
1920123.2 mm (4.9 in)
192166.8 mm (2.6 in)
1922122.4 mm (4.8 in)
192399.8 mm (3.9 in)
192499.6 mm (3.9 in)
192584.6 mm (3.3 in)
192639.9 mm (1.6 in)
192750.8 mm (2.0 in)
192845.7 mm (1.8 in)
192959.9 mm (2.4 in)
193073.4 mm (2.9 in)
193181.8 mm (3.2 in)
193239.9 mm (1.6 in)
193364.3 mm (2.5 in)
193445.5 mm (1.8 in)
193549.8 mm (2.0 in)
193658.4 mm (2.3 in)
193784.1 mm (3.3 in)
193826.7 mm (1.1 in)
193956.4 mm (2.2 in)
194083.3 mm (3.3 in)
194158.2 mm (2.3 in)
1942111.3 mm (4.4 in)
194361.0 mm (2.4 in)
1944128.8 mm (5.1 in)
194555.1 mm (2.2 in)
194629.7 mm (1.2 in)
194747.0 mm (1.9 in)
194820.8 mm (0.8 in)
194969.1 mm (2.7 in)
1950203.7 mm (8.0 in)
195154.1 mm (2.1 in)
195252.1 mm (2.1 in)
195370.6 mm (2.8 in)
195478.0 mm (3.1 in)
1955133.1 mm (5.2 in)
195653.3 mm (2.1 in)
195760.2 mm (2.4 in)
195838.9 mm (1.5 in)
1959106.9 mm (4.2 in)
196062.2 mm (2.4 in)
196183.1 mm (3.3 in)
196289.9 mm (3.5 in)
1963136.7 mm (5.4 in)
196462.2 mm (2.4 in)
196578.7 mm (3.1 in)
196648.3 mm (1.9 in)
1967101.3 mm (4.0 in)
196874.9 mm (2.9 in)
196923.6 mm (0.9 in)
197031.8 mm (1.3 in)
1971132.3 mm (5.2 in)
197250.3 mm (2.0 in)
197380.0 mm (3.1 in)
197432.6 mm (1.3 in)
197542.1 mm (1.7 in)
197655.0 mm (2.2 in)
197735.0 mm (1.4 in)
197851.2 mm (2.0 in)
197925.0 mm (1.0 in)
198052.4 mm (2.1 in)
198163.6 mm (2.5 in)
198222.4 mm (0.9 in)
198347.0 mm (1.9 in)
198446.8 mm (1.8 in)
198570.0 mm (2.8 in)
198657.6 mm (2.3 in)
198735.2 mm (1.4 in)
198836.0 mm (1.4 in)
1989100.0 mm (3.9 in)
1990137.0 mm (5.4 in)
199150.2 mm (2.0 in)
199253.4 mm (2.1 in)
1993109.2 mm (4.3 in)
199468.6 mm (2.7 in)
199525.6 mm (1.0 in)
199691.0 mm (3.6 in)
199798.1 mm (3.9 in)
199894.6 mm (3.7 in)
199997.0 mm (3.8 in)
200052.8 mm (2.1 in)
200171.9 mm (2.8 in)
200236.5 mm (1.4 in)
200345.2 mm (1.8 in)
200483.2 mm (3.3 in)
200524.6 mm (1.0 in)
200695.0 mm (3.7 in)
200746.0 mm (1.8 in)
200883.0 mm (3.3 in)
200979.8 mm (3.1 in)
201098.6 mm (3.9 in)
201139.8 mm (1.6 in)
201251.8 mm (2.0 in)
201394.6 mm (3.7 in)
2014100.0 mm (3.9 in)
201524.6 mm (1.0 in)
201688.0 mm (3.5 in)
201735.6 mm (1.4 in)
201863.0 mm (2.5 in)
2019146.4 mm (5.8 in)
202064.8 mm (2.6 in)
202133.4 mm (1.3 in)
202280.4 mm (3.2 in)
202340.4 mm (1.6 in)
202439.4 mm (1.6 in)
202572.6 mm (2.9 in)
202644.0 mm (1.7 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Isisford Post Office by year The wettest five days of the year at Isisford Post Office, 1885 to 2026. The record is 303.8 mm (12.0 in) in 1891, marked on the chart; the median year is 94.4 mm (3.7 in). 01002003004001900192019401960198020002020Record: 303.8 mm (12.0 in) in 1891
The wettest five days of the year at Isisford Post Office, 1885 to 2026. The record is 303.8 mm (12.0 in) in 1891, marked on the chart; the median year is 94.4 mm (3.7 in).
Wettest five days (Rx5day) at Isisford Post Office by year
YearWettest five days (Rx5day)
18850.0 mm (0.00 in)
188783.4 mm (3.3 in)
188831.2 mm (1.2 in)
188984.9 mm (3.3 in)
1890217.4 mm (8.6 in)
1891303.8 mm (12.0 in)
1892165.1 mm (6.5 in)
189373.9 mm (2.9 in)
1894287.4 mm (11.3 in)
189584.9 mm (3.3 in)
1896128.9 mm (5.1 in)
189757.1 mm (2.2 in)
1898251.1 mm (9.9 in)
189974.2 mm (2.9 in)
190057.9 mm (2.3 in)
190175.8 mm (3.0 in)
190279.3 mm (3.1 in)
190390.4 mm (3.6 in)
190491.5 mm (3.6 in)
190559.5 mm (2.3 in)
1906196.8 mm (7.7 in)
190779.5 mm (3.1 in)
1908154.9 mm (6.1 in)
190984.1 mm (3.3 in)
1910123.2 mm (4.9 in)
1911136.9 mm (5.4 in)
191279.0 mm (3.1 in)
1913113.5 mm (4.5 in)
1914126.3 mm (5.0 in)
1915107.2 mm (4.2 in)
1916126.2 mm (5.0 in)
191790.6 mm (3.6 in)
1918125.4 mm (4.9 in)
191950.9 mm (2.0 in)
1920136.4 mm (5.4 in)
192186.9 mm (3.4 in)
1922142.2 mm (5.6 in)
1923100.6 mm (4.0 in)
1924201.2 mm (7.9 in)
1925223.5 mm (8.8 in)
192658.4 mm (2.3 in)
192780.7 mm (3.2 in)
192856.2 mm (2.2 in)
192967.6 mm (2.7 in)
1930164.8 mm (6.5 in)
1931124.5 mm (4.9 in)
193253.1 mm (2.1 in)
193394.7 mm (3.7 in)
193460.7 mm (2.4 in)
193567.3 mm (2.6 in)
1936136.4 mm (5.4 in)
1937157.8 mm (6.2 in)
193828.5 mm (1.1 in)
1939118.6 mm (4.7 in)
1940186.4 mm (7.3 in)
1941128.7 mm (5.1 in)
1942118.2 mm (4.7 in)
194381.8 mm (3.2 in)
1944161.1 mm (6.3 in)
194570.4 mm (2.8 in)
194662.7 mm (2.5 in)
194763.0 mm (2.5 in)
194830.2 mm (1.2 in)
194991.7 mm (3.6 in)
1950211.8 mm (8.3 in)
1951100.8 mm (4.0 in)
195264.8 mm (2.6 in)
1953179.8 mm (7.1 in)
1954115.3 mm (4.5 in)
1955173.5 mm (6.8 in)
1956127.5 mm (5.0 in)
195761.5 mm (2.4 in)
1958114.3 mm (4.5 in)
1959129.5 mm (5.1 in)
1960119.7 mm (4.7 in)
1961111.2 mm (4.4 in)
1962110.3 mm (4.3 in)
1963225.5 mm (8.9 in)
196495.5 mm (3.8 in)
1965102.1 mm (4.0 in)
1966114.7 mm (4.5 in)
1967128.2 mm (5.0 in)
196881.5 mm (3.2 in)
196948.5 mm (1.9 in)
197042.5 mm (1.7 in)
1971166.4 mm (6.6 in)
197254.9 mm (2.2 in)
1973154.4 mm (6.1 in)
197439.8 mm (1.6 in)
197565.6 mm (2.6 in)
197699.0 mm (3.9 in)
197766.9 mm (2.6 in)
197851.2 mm (2.0 in)
197952.6 mm (2.1 in)
198094.4 mm (3.7 in)
198176.3 mm (3.0 in)
198248.6 mm (1.9 in)
198367.0 mm (2.6 in)
198471.0 mm (2.8 in)
198581.0 mm (3.2 in)
198665.6 mm (2.6 in)
198765.7 mm (2.6 in)
198857.6 mm (2.3 in)
1989162.2 mm (6.4 in)
1990168.8 mm (6.6 in)
1991115.0 mm (4.5 in)
199258.6 mm (2.3 in)
1993154.6 mm (6.1 in)
1994113.2 mm (4.5 in)
199559.8 mm (2.4 in)
199693.0 mm (3.7 in)
1997115.1 mm (4.5 in)
1998106.4 mm (4.2 in)
1999207.8 mm (8.2 in)
200089.8 mm (3.5 in)
2001113.4 mm (4.5 in)
200276.2 mm (3.0 in)
200375.4 mm (3.0 in)
2004240.0 mm (9.4 in)
200547.8 mm (1.9 in)
200695.8 mm (3.8 in)
200757.2 mm (2.3 in)
200883.0 mm (3.3 in)
2009138.7 mm (5.5 in)
2010150.0 mm (5.9 in)
201182.0 mm (3.2 in)
201293.0 mm (3.7 in)
201394.6 mm (3.7 in)
2014103.6 mm (4.1 in)
201533.6 mm (1.3 in)
2016103.8 mm (4.1 in)
201767.0 mm (2.6 in)
2018116.2 mm (4.6 in)
2019204.6 mm (8.1 in)
2020117.6 mm (4.6 in)
202156.8 mm (2.2 in)
2022120.7 mm (4.8 in)
202372.0 mm (2.8 in)
202486.8 mm (3.4 in)
2025239.8 mm (9.4 in)
202683.8 mm (3.3 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Isisford Post Office by year The longest dry spell of the year at Isisford Post Office, 1885 to 2026. The record is 196 days in 1902, marked on the chart; the median year is 65 days. 0501001502001900192019401960198020002020Record: 196 days in 1902
The longest dry spell of the year at Isisford Post Office, 1885 to 2026. The record is 196 days in 1902, marked on the chart; the median year is 65 days.
Longest dry spell (CDD) at Isisford Post Office by year
YearLongest dry spell (CDD)
1885123 days
188752 days
188886 days
188948 days
189038 days
189133 days
189240 days
189356 days
189458 days
189568 days
189647 days
189771 days
189874 days
189953 days
190045 days
190148 days
1902196 days
190348 days
190466 days
190578 days
190667 days
190761 days
190870 days
190950 days
191069 days
191159 days
191298 days
191376 days
191472 days
191589 days
191674 days
191798 days
1918102 days
191995 days
192072 days
192142 days
1922109 days
192354 days
192465 days
192561 days
192661 days
1927114 days
1928109 days
1929124 days
193068 days
193150 days
1932140 days
193374 days
193470 days
193554 days
193672 days
193787 days
193891 days
193977 days
194079 days
194177 days
194255 days
194382 days
194451 days
194580 days
1946137 days
194764 days
194844 days
194999 days
195042 days
1951102 days
195267 days
195368 days
195453 days
195542 days
195657 days
195762 days
195858 days
195956 days
196052 days
196178 days
196254 days
196366 days
196481 days
1965164 days
196684 days
196772 days
196842 days
196989 days
1970141 days
197147 days
197285 days
197328 days
197456 days
197544 days
197635 days
197769 days
197837 days
197976 days
198048 days
198169 days
198279 days
198335 days
198460 days
198554 days
198663 days
198750 days
198854 days
198999 days
199045 days
1991112 days
199257 days
199365 days
1994117 days
199591 days
199656 days
199758 days
199839 days
1999109 days
200065 days
200186 days
2002124 days
200349 days
200496 days
200561 days
200651 days
200752 days
200876 days
200973 days
201041 days
201154 days
201264 days
2013146 days
201464 days
201561 days
201647 days
201792 days
2018184 days
2019114 days
202078 days
202157 days
202244 days
202362 days
202445 days
202541 days
202655 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.

Rainfall Return Levels

138 years, 1888 to 2025

A day with at least 63.0 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 174.1 mm (6.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Isisford Post Office: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years63.0 mm (2.5 in)
5 years91.6 mm (3.6 in)
10 years111.0 mm (4.4 in)
25 years136.0 mm (5.4 in)
50 years155.0 mm (6.1 in)
100 years174.1 mm (6.9 in)

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 138 years of values from 1888 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: 203.7 mm (8.0 in) in 1950; 166.6 mm (6.6 in) in 1891; 146.4 mm (5.8 in) in 2019.

Download the Data

  • Data for Isisford Post Office standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Isisford Post Office 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).