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Summit Grd STN Weather Records (USC00358190)

Record envelope, standing records and threshold days for Summit Grd STN (USC00358190), Oregon, United States, with 57 years of record.

Key Facts for Summit Grd STN

  • Summit Grd STN (USC00358190) is a weather station in Oregon, United States at 45.30 latitude and -121.75 longitude, 1,190 m (3,904 ft) above sea level.
  • The station reports from 1895 to 1951, 57 years of record.
  • 1,464 records set at Summit Grd STN still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Summit Grd STN set a daily record precipitation of 22.4 mm (0.9 in) on 4 May 1951.

About the Station

  • Location: Oregon, United States, 45.30 latitude, -121.75 longitude.
  • Elevation: 1,190 m (3,904 ft).
  • Period of record: 1895 to 1951, 57 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Summit Grd STN, with 2026 drawn through them The band shows the record high and record low for each calendar day at Summit Grd STN. The lines show the 2026 daily maximum and minimum. 0 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 Summit Grd STN. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Summit Grd STN, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan18.3 C (64.9 F)-25.6 C (-14.1 F)n/an/a
Feb19.4 C (66.9 F)-26.7 C (-16.1 F)n/an/a
Mar22.2 C (72.0 F)-17.2 C (1.0 F)n/an/a
Apr25.0 C (77.0 F)-13.9 C (7.0 F)n/an/a
May28.3 C (82.9 F)-7.8 C (18.0 F)n/an/a
Jun33.3 C (91.9 F)-2.8 C (27.0 F)n/an/a
Jul36.1 C (97.0 F)-1.1 C (30.0 F)n/an/a
Aug35.0 C (95.0 F)-2.2 C (28.0 F)n/an/a
Sep32.2 C (90.0 F)-6.7 C (19.9 F)n/an/a
Oct32.2 C (90.0 F)-12.2 C (10.0 F)n/an/a
Nov26.7 C (80.1 F)-19.4 C (-2.9 F)n/an/a
Dec19.4 C (66.9 F)-22.8 C (-9.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Summit Grd STN by the year they were set 1,464 records at Summit Grd STN still stand. 1897 holds the most, with 65. 0204060801895: 471896: 601897: 651898: 401899: 571900: 461901: 391902: 321903: 381904: 441905: 341906: 421907: 311908: 231909: 381910: 411911: 311912: 301913: 61915: 21916: 421917: 471918: 531919: 461920: 351921: 261922: 401923: 361924: 251925: 151926: 261927: 41928: 101929: 161930: 211931: 11932: 181933: 81934: 181935: 141936: 81937: 41938: 71939: 11940: 91941: 91942: 281943: 331944: 351945: 221946: 151947: 21948: 71949: 171950: 131951: 71895190119071913192019261932193819441950
1,464 records at Summit Grd STN still stand. 1897 holds the most, with 65.
Standing records at Summit Grd STN by the year they were set
Year setStanding records
189547
189660
189765
189840
189957
190046
190139
190232
190338
190444
190534
190642
190731
190823
190938
191041
191131
191230
19136
19152
191642
191747
191853
191946
192035
192126
192240
192336
192425
192515
192626
19274
192810
192916
193021
19311
193218
19338
193418
193514
19368
19374
19387
19391
19409
19419
194228
194333
194435
194522
194615
19472
19487
194917
195013
19517

All-Time Record Progression

1 new records
When Summit Grd STN set new all-time records 1 all-time records were set at Summit Grd STN between 20 July 1946 and 20 July 1946. Each dot is a new record. Record high maximum temperature20 July 1946: Record high maximum temperature 36.1 C (97.0 F)
1 all-time records were set at Summit Grd STN between 20 July 1946 and 20 July 1946. Each dot is a new record.
When Summit Grd STN set new all-time records
DateKindDetail
1946-07-20Record high maximum temperatureRecord high maximum temperature 36.1 C (97.0 F)

Wettest Day of Each Month

Nov: 138.2 mm (5.4 in)
Record daily precipitation for each month at Summit Grd STN The wettest day on record for each calendar month at Summit Grd STN. The most was 138.2 mm (5.4 in) on 22 November 1909. 050100150 Jan: 109.2 mm (4.3 in), 28 January 1927 Jan Feb: 104.1 mm (4.1 in), 2 February 1916 Feb Mar: 130.8 mm (5.1 in), 31 March 1931 Mar Apr: 74.7 mm (2.9 in), 13 April 1896 Apr May: 78.7 mm (3.1 in), 8 May 1948 May Jun: 48.0 mm (1.9 in), 12 June 1943 Jun Jul: 48.8 mm (1.9 in), 6 July 1909 Jul Aug: 45.0 mm (1.8 in), 8 August 1916 Aug Sep: 58.4 mm (2.3 in), 12 September 1920 Sep Oct: 99.8 mm (3.9 in), 16 October 1947 Oct Nov: 138.2 mm (5.4 in), 22 November 1909 Nov Dec: 122.4 mm (4.8 in), 21 December 1915 Dec
The wettest day on record for each calendar month at Summit Grd STN. The most was 138.2 mm (5.4 in) on 22 November 1909.
Record daily precipitation for each month at Summit Grd STN
MonthRecord daily precipitation (mm)Date
Jan109.2 mm (4.3 in)28 January 1927
Feb104.1 mm (4.1 in)2 February 1916
Mar130.8 mm (5.1 in)31 March 1931
Apr74.7 mm (2.9 in)13 April 1896
May78.7 mm (3.1 in)8 May 1948
Jun48.0 mm (1.9 in)12 June 1943
Jul48.8 mm (1.9 in)6 July 1909
Aug45.0 mm (1.8 in)8 August 1916
Sep58.4 mm (2.3 in)12 September 1920
Oct99.8 mm (3.9 in)16 October 1947
Nov138.2 mm (5.4 in)22 November 1909
Dec122.4 mm (4.8 in)21 December 1915

Period of Record Coverage

1895 to 1951
Days with data per year at Summit Grd STN 56 years of record at Summit Grd STN, 1895 to 1951. 30 years have data for under 90 percent of days and are left out of rankings: 1895, 1908, 1911, 1912, 1913, 1915, 1918, 1924 and others. 1895: 245 of 365 days1896: 365 of 366 days1897: 365 of 365 days1898: 364 of 365 days1899: 364 of 365 days1900: 362 of 365 days1901: 360 of 365 days1902: 355 of 365 days1903: 356 of 365 days1904: 360 of 366 days1905: 364 of 365 days1906: 363 of 365 days1907: 338 of 365 days1908: 282 of 366 days1909: 342 of 365 days1910: 351 of 365 days1911: 327 of 365 days1912: 298 of 366 days1913: 119 of 365 days1915: 87 of 365 days1916: 352 of 366 days1917: 362 of 365 days1918: 273 of 365 days1919: 342 of 365 days1920: 365 of 366 days1921: 354 of 365 days1922: 362 of 365 days1923: 343 of 365 days1924: 175 of 366 days1925: 147 of 365 days1926: 148 of 365 days1927: 147 of 365 days1928: 151 of 366 days1929: 139 of 365 days1930: 144 of 365 days1931: 150 of 365 days1932: 152 of 366 days1933: 147 of 365 days1934: 150 of 365 days1935: 147 of 365 days1936: 149 of 366 days1937: 147 of 365 days1938: 150 of 365 days1939: 149 of 365 days1940: 89 of 366 days1941: 153 of 365 days1942: 364 of 365 days1943: 363 of 365 days1944: 341 of 366 days1945: 342 of 365 days1946: 346 of 365 days1947: 145 of 365 days1948: 195 of 366 days1949: 214 of 365 days1950: 188 of 365 days1951: 130 of 365 days190019101920193019401950
56 years of record at Summit Grd STN, 1895 to 1951. 30 years have data for under 90 percent of days and are left out of rankings: 1895, 1908, 1911, 1912, 1913, 1915, 1918, 1924 and others.
Days with data per year at Summit Grd STN
YearDays with dataShare of yearComplete
189524567%No
1896365100%Yes
1897365100%Yes
1898364100%Yes
1899364100%Yes
190036299%Yes
190136099%Yes
190235597%Yes
190335698%Yes
190436098%Yes
1905364100%Yes
190636399%Yes
190733893%Yes
190828277%No
190934294%Yes
191035196%Yes
191132790%No
191229881%No
191311933%No
19158724%No
191635296%Yes
191736299%Yes
191827375%No
191934294%Yes
1920365100%Yes
192135497%Yes
192236299%Yes
192334394%Yes
192417548%No
192514740%No
192614841%No
192714740%No
192815141%No
192913938%No
193014439%No
193115041%No
193215242%No
193314740%No
193415041%No
193514740%No
193614941%No
193714740%No
193815041%No
193914941%No
19408924%No
194115342%No
1942364100%Yes
194336399%Yes
194434193%Yes
194534294%Yes
194634695%Yes
194714540%No
194819553%No
194921459%No
195018852%No
195113036%No

Latest Records

20
Latest records at Summit Grd STN
DateStationRecordValueBeat old record byOld record stoodSignificance
4 May 1951Summit Grd STN, USdaily rain22.4 mm (0.9 in)4.6 mm (0.18 in)40 years20 of 100 (Routine)
2 May 1951Summit Grd STN, USdaily low max (Tie)1.1 C (34.0 F)tie48 years4 of 100 (Routine)
29 April 1951Summit Grd STN, USdaily low max (Tie)2.2 C (36.0 F)tie28 years3 of 100 (Routine)
7 April 1951Summit Grd STN, USdaily high max18.3 C (64.9 F)1.6 C (2.9 F)25 years14 of 100 (Routine)
4 April 1951Summit Grd STN, USdaily high max18.3 C (64.9 F)1.6 C (2.9 F)45 years20 of 100 (Routine)
3 April 1951Summit Grd STN, USdaily high max17.8 C (64.0 F)2.2 C (4.0 F)6 years11 of 100 (Routine)
19 March 1951Summit Grd STN, USdaily snow depth302.3 cm (119.0 in)5.1 cm (2.0 in)1 year5 of 100 (Routine)
18 March 1951Summit Grd STN, USdaily snow depth302.3 cm (119.0 in)2.6 cm (1.0 in)1 year5 of 100 (Routine)
17 March 1951Summit Grd STN, USdaily low max-3.3 C (26.1 F)2.2 C (4.0 F)30 years18 of 100 (Routine)
14 March 1951Summit Grd STN, USdaily snow depth322.6 cm (127.0 in)2.6 cm (1.0 in)51 years20 of 100 (Routine)
13 March 1951Summit Grd STN, USdaily snow depth330.2 cm (130.0 in)10.2 cm (4.0 in)51 years21 of 100 (Routine)
12 March 1951Summit Grd STN, USdaily snow depth355.6 cm (140.0 in)30.5 cm (12.0 in)1 year8 of 100 (Routine)
11 March 1951Summit Grd STN, USdaily snow depth381.0 cm (150.0 in)53.3 cm (21.0 in)1 year11 of 100 (Routine)
10 March 1951Summit Grd STN, USmonthly snow depth386.1 cm (152.0 in)5.1 cm (2.0 in)0 years15 of 100 (Routine)
10 March 1951Summit Grd STN, USdaily low max (Tie)-2.8 C (27.0 F)tie53 years5 of 100 (Routine)
10 March 1951Summit Grd STN, USdaily snowfall (Tie)22.9 cm (9.0 in)tie24 years3 of 100 (Routine)
9 March 1951Summit Grd STN, USmonthly snow depth381.0 cm (150.0 in)2.5 cm (1.0 in)18 years20 of 100 (Routine)
4 March 1951Summit Grd STN, USdaily rain40.1 mm (1.6 in)6.3 mm (0.25 in)28 years17 of 100 (Routine)
4 March 1951Summit Grd STN, USdaily snowfall38.1 cm (15.0 in)2.5 cm (1.0 in)28 years15 of 100 (Routine)
27 February 1951Summit Grd STN, USdaily low min (Tie)-11.7 C (10.9 F)tie28 years3 of 100 (Routine)

Climate Trend

22 complete years, 1896 to 1946
Annual mean temperature at Summit Grd STN as warming stripes, 1896 to 1946 One stripe for each of 22 complete years at Summit Grd STN, 1896 to 1946. Blue stripes are years cooler than the station's own mean of 5.5 C (42.0 F); red stripes are warmer. The coolest year was 1921, at 4.4 C (39.9 F), and the warmest was 1901, at 6.7 C (44.0 F). The strongest colour marks a difference of 1.2 C (2.2 F). 1896: 5.3 C, -0.2 C from the station mean1897: 5.4 C, -0.1 C from the station mean1899: 4.7 C, -0.9 C from the station mean1900: 6.4 C, +0.9 C from the station mean1901: 6.7 C, +1.1 C from the station mean1902: 5.2 C, -0.4 C from the station mean1903: 5.1 C, -0.5 C from the station mean1904: 6.0 C, +0.5 C from the station mean1905: 5.4 C, -0.1 C from the station mean1907: 5.9 C, +0.4 C from the station mean1909: 4.7 C, -0.9 C from the station mean1910: 6.0 C, +0.5 C from the station mean1916: 5.6 C, +0.1 C from the station mean1917: 6.6 C, +1.1 C from the station mean1920: 5.0 C, -0.5 C from the station mean1921: 4.4 C, -1.2 C from the station mean1922: 4.9 C, -0.7 C from the station mean1942: 6.4 C, +0.9 C from the station mean1943: 6.0 C, +0.5 C from the station mean1944: 5.5 C, 0.0 C from the station mean1945: 5.5 C, 0.0 C from the station mean1946: 5.2 C, -0.3 C from the station mean18961900190519101915192019251930193519401945
One stripe for each of 22 complete years at Summit Grd STN, 1896 to 1946. Blue stripes are years cooler than the station's own mean of 5.5 C (42.0 F); red stripes are warmer. The coolest year was 1921, at 4.4 C (39.9 F), and the warmest was 1901, at 6.7 C (44.0 F). The strongest colour marks a difference of 1.2 C (2.2 F).
Annual mean temperature at Summit Grd STN as warming stripes, 1896 to 1946
YearAnnual mean temperatureDifference from the station mean
18965.3 C-0.21 C
18975.4 C-0.12 C
18994.7 C-0.88 C
19006.4 C+0.85 C
19016.7 C+1.12 C
19025.2 C-0.37 C
19035.1 C-0.46 C
19046.0 C+0.48 C
19055.4 C-0.13 C
19075.9 C+0.38 C
19094.7 C-0.87 C
19106.0 C+0.49 C
19165.6 C+0.07 C
19176.6 C+1.09 C
19205.0 C-0.54 C
19214.4 C-1.18 C
19224.9 C-0.68 C
19426.4 C+0.86 C
19436.0 C+0.47 C
19445.5 C-0.03 C
19455.5 C-0.04 C
19465.2 C-0.32 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

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

1895 to 1951
Yearly extremes at Summit Grd STN: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)36.1 C (97.0 F)194629.7 C (85.5 F)56
Coldest night (TNn)-26.7 C (-16.1 F)1899-17.8 C (0.0 F)56
Wettest day (Rx1day)138.2 mm (5.4 in)190975.1 mm (3.0 in)56
Wettest five days (Rx5day)375.4 mm (14.8 in)1946196.8 mm (7.7 in)56
Longest dry spell (CDD)62 days192220 days56

Hottest day (TXx)

Hottest day (TXx) at Summit Grd STN by year The hottest day of the year at Summit Grd STN, 1895 to 1951. The record is 36.1 C (97.0 F) in 1946, marked on the chart; the median year is 29.7 C (85.5 F). 10203040190019101920193019401950Record: 36.1 C (97.0 F) in 1946
The hottest day of the year at Summit Grd STN, 1895 to 1951. The record is 36.1 C (97.0 F) in 1946, marked on the chart; the median year is 29.7 C (85.5 F).
Hottest day (TXx) at Summit Grd STN by year
YearHottest day (TXx)
189532.2 C (90.0 F)
189634.4 C (93.9 F)
189735.0 C (95.0 F)
189835.0 C (95.0 F)
189932.2 C (90.0 F)
190029.4 C (84.9 F)
190132.8 C (91.0 F)
190230.6 C (87.1 F)
190328.9 C (84.0 F)
190432.2 C (90.0 F)
190532.8 C (91.0 F)
190632.8 C (91.0 F)
190730.0 C (86.0 F)
190829.4 C (84.9 F)
190930.6 C (87.1 F)
191030.0 C (86.0 F)
191132.8 C (91.0 F)
191231.1 C (88.0 F)
191318.9 C (66.0 F)
191519.4 C (66.9 F)
191633.3 C (91.9 F)
191733.9 C (93.0 F)
191833.9 C (93.0 F)
191931.7 C (89.1 F)
192030.6 C (87.1 F)
192126.7 C (80.1 F)
192233.3 C (91.9 F)
192329.4 C (84.9 F)
192419.4 C (66.9 F)
192519.4 C (66.9 F)
192621.1 C (70.0 F)
192715.6 C (60.1 F)
192820.6 C (69.1 F)
192932.2 C (90.0 F)
193026.7 C (80.1 F)
193118.3 C (64.9 F)
193218.3 C (64.9 F)
193317.8 C (64.0 F)
193421.7 C (71.1 F)
193516.7 C (62.1 F)
193615.6 C (60.1 F)
193712.8 C (55.0 F)
193812.2 C (54.0 F)
193918.3 C (64.9 F)
194021.1 C (70.0 F)
194130.0 C (86.0 F)
194233.9 C (93.0 F)
194331.7 C (89.1 F)
194432.2 C (90.0 F)
194532.2 C (90.0 F)
194636.1 C (97.0 F)
194718.3 C (64.9 F)
194821.1 C (70.0 F)
194925.0 C (77.0 F)
195022.2 C (72.0 F)
195120.0 C (68.0 F)

Coldest night (TNn)

Coldest night (TNn) at Summit Grd STN by year The coldest night of the year at Summit Grd STN, 1895 to 1951. The record is -26.7 C (-16.1 F) in 1899, marked on the chart; the median year is -17.8 C (0.0 F). -30-25-20-15-10-5190019101920193019401950Record: -26.7 C (-16.1 F) in 1899
The coldest night of the year at Summit Grd STN, 1895 to 1951. The record is -26.7 C (-16.1 F) in 1899, marked on the chart; the median year is -17.8 C (0.0 F).
Coldest night (TNn) at Summit Grd STN by year
YearColdest night (TNn)
1895-13.9 C (7.0 F)
1896-19.4 C (-2.9 F)
1897-17.2 C (1.0 F)
1898-16.7 C (1.9 F)
1899-26.7 C (-16.1 F)
1900-16.7 C (1.9 F)
1901-13.9 C (7.0 F)
1902-19.4 C (-2.9 F)
1903-16.1 C (3.0 F)
1904-16.7 C (1.9 F)
1905-20.6 C (-5.1 F)
1906-12.8 C (9.0 F)
1907-20.0 C (-4.0 F)
1908-12.8 C (9.0 F)
1909-22.2 C (-8.0 F)
1910-17.8 C (0.0 F)
1911-16.7 C (1.9 F)
1912-13.9 C (7.0 F)
1913-12.2 C (10.0 F)
1915-16.1 C (3.0 F)
1916-18.9 C (-2.0 F)
1917-18.9 C (-2.0 F)
1918-16.1 C (3.0 F)
1919-22.2 C (-8.0 F)
1920-13.3 C (8.1 F)
1921-17.8 C (0.0 F)
1922-22.2 C (-8.0 F)
1923-21.1 C (-6.0 F)
1924-21.7 C (-7.1 F)
1925-10.6 C (12.9 F)
1926-17.2 C (1.0 F)
1927-20.0 C (-4.0 F)
1928-12.8 C (9.0 F)
1929-19.4 C (-2.9 F)
1930-20.0 C (-4.0 F)
1931-11.1 C (12.0 F)
1932-22.8 C (-9.0 F)
1933-18.9 C (-2.0 F)
1934-6.7 C (19.9 F)
1935-20.0 C (-4.0 F)
1936-18.9 C (-2.0 F)
1937-23.9 C (-11.0 F)
1938-12.8 C (9.0 F)
1939-15.0 C (5.0 F)
1940-12.2 C (10.0 F)
1941-15.6 C (3.9 F)
1942-18.9 C (-2.0 F)
1943-25.6 C (-14.1 F)
1944-19.4 C (-2.9 F)
1945-13.9 C (7.0 F)
1946-14.4 C (6.1 F)
1947-14.4 C (6.1 F)
1948-17.8 C (0.0 F)
1949-20.0 C (-4.0 F)
1950-22.8 C (-9.0 F)
1951-19.4 C (-2.9 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Summit Grd STN by year The wettest day of the year at Summit Grd STN, 1895 to 1951. The record is 138.2 mm (5.4 in) in 1909, marked on the chart; the median year is 75.1 mm (3.0 in). 255075100125150190019101920193019401950Record: 138.2 mm (5.4 in) in 1909
The wettest day of the year at Summit Grd STN, 1895 to 1951. The record is 138.2 mm (5.4 in) in 1909, marked on the chart; the median year is 75.1 mm (3.0 in).
Wettest day (Rx1day) at Summit Grd STN by year
YearWettest day (Rx1day)
189591.4 mm (3.6 in)
1896100.1 mm (3.9 in)
189795.3 mm (3.8 in)
189872.9 mm (2.9 in)
189996.5 mm (3.8 in)
190071.1 mm (2.8 in)
190158.7 mm (2.3 in)
190261.0 mm (2.4 in)
190364.8 mm (2.6 in)
190464.0 mm (2.5 in)
190541.9 mm (1.6 in)
190699.6 mm (3.9 in)
190779.2 mm (3.1 in)
1908118.1 mm (4.6 in)
1909138.2 mm (5.4 in)
191075.7 mm (3.0 in)
191157.2 mm (2.3 in)
1912101.6 mm (4.0 in)
191353.3 mm (2.1 in)
1915122.4 mm (4.8 in)
1916104.1 mm (4.1 in)
1917100.6 mm (4.0 in)
191869.3 mm (2.7 in)
191967.8 mm (2.7 in)
192058.4 mm (2.3 in)
1921126.0 mm (5.0 in)
192255.1 mm (2.2 in)
1923104.1 mm (4.1 in)
1924109.7 mm (4.3 in)
192551.6 mm (2.0 in)
192658.7 mm (2.3 in)
1927109.2 mm (4.3 in)
192873.7 mm (2.9 in)
192949.0 mm (1.9 in)
193072.6 mm (2.9 in)
1931130.8 mm (5.1 in)
193277.2 mm (3.0 in)
1933105.4 mm (4.1 in)
193466.0 mm (2.6 in)
193566.0 mm (2.6 in)
193655.9 mm (2.2 in)
193777.5 mm (3.1 in)
193888.1 mm (3.5 in)
193950.8 mm (2.0 in)
194061.0 mm (2.4 in)
194173.7 mm (2.9 in)
194295.8 mm (3.8 in)
194378.5 mm (3.1 in)
194446.7 mm (1.8 in)
1945101.6 mm (4.0 in)
1946102.4 mm (4.0 in)
194799.8 mm (3.9 in)
1948105.4 mm (4.1 in)
194963.8 mm (2.5 in)
195053.6 mm (2.1 in)
195174.4 mm (2.9 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Summit Grd STN by year The wettest five days of the year at Summit Grd STN, 1895 to 1951. The record is 375.4 mm (14.8 in) in 1946, marked on the chart; the median year is 196.8 mm (7.7 in). 0100200300400190019101920193019401950Record: 375.4 mm (14.8 in) in 1946
The wettest five days of the year at Summit Grd STN, 1895 to 1951. The record is 375.4 mm (14.8 in) in 1946, marked on the chart; the median year is 196.8 mm (7.7 in).
Wettest five days (Rx5day) at Summit Grd STN by year
YearWettest five days (Rx5day)
1895192.6 mm (7.6 in)
1896239.0 mm (9.4 in)
1897277.7 mm (10.9 in)
1898186.1 mm (7.3 in)
1899248.3 mm (9.8 in)
1900147.9 mm (5.8 in)
1901175.8 mm (6.9 in)
1902196.7 mm (7.7 in)
1903162.1 mm (6.4 in)
1904143.5 mm (5.6 in)
1905136.0 mm (5.4 in)
1906295.7 mm (11.6 in)
1907179.6 mm (7.1 in)
1908227.7 mm (9.0 in)
1909283.0 mm (11.1 in)
1910197.9 mm (7.8 in)
1911120.7 mm (4.8 in)
1912228.6 mm (9.0 in)
1913196.8 mm (7.7 in)
1915204.5 mm (8.1 in)
1916216.4 mm (8.5 in)
1917286.5 mm (11.3 in)
1918206.2 mm (8.1 in)
1919245.1 mm (9.6 in)
1920142.8 mm (5.6 in)
1921329.9 mm (13.0 in)
1922132.6 mm (5.2 in)
1923272.7 mm (10.7 in)
1924247.3 mm (9.7 in)
1925185.0 mm (7.3 in)
1926103.4 mm (4.1 in)
1927213.5 mm (8.4 in)
1928194.0 mm (7.6 in)
1929145.3 mm (5.7 in)
1930173.9 mm (6.8 in)
1931224.7 mm (8.8 in)
1932193.6 mm (7.6 in)
1933209.1 mm (8.2 in)
1934177.6 mm (7.0 in)
1935127.7 mm (5.0 in)
1936179.1 mm (7.1 in)
1937210.1 mm (8.3 in)
1938190.2 mm (7.5 in)
1939136.6 mm (5.4 in)
1940167.7 mm (6.6 in)
1941129.7 mm (5.1 in)
1942230.2 mm (9.1 in)
1943201.0 mm (7.9 in)
194495.2 mm (3.7 in)
1945199.9 mm (7.9 in)
1946375.4 mm (14.8 in)
1947229.3 mm (9.0 in)
1948203.5 mm (8.0 in)
1949199.2 mm (7.8 in)
1950116.8 mm (4.6 in)
1951168.1 mm (6.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Summit Grd STN by year The longest dry spell of the year at Summit Grd STN, 1895 to 1951. The record is 62 days in 1922, marked on the chart; the median year is 20 days. 020406080190019101920193019401950Record: 62 days in 1922
The longest dry spell of the year at Summit Grd STN, 1895 to 1951. The record is 62 days in 1922, marked on the chart; the median year is 20 days.
Longest dry spell (CDD) at Summit Grd STN by year
YearLongest dry spell (CDD)
189553 days
189635 days
189743 days
189823 days
189917 days
190030 days
190134 days
190232 days
190329 days
190430 days
190516 days
190652 days
190726 days
190822 days
190918 days
191058 days
191118 days
191216 days
191310 days
191532 days
191632 days
191741 days
191851 days
191950 days
192036 days
192143 days
192262 days
192338 days
19246 days
19258 days
192610 days
19277 days
192812 days
192919 days
193010 days
193118 days
19328 days
193312 days
193412 days
193518 days
193614 days
19376 days
19389 days
193916 days
19408 days
194112 days
194221 days
194326 days
194420 days
194533 days
194627 days
19477 days
194817 days
194919 days
19508 days
195127 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

22 years with a frost

Across 22 years with a frost, the median last spring frost at Summit Grd STN falls on 16 June and the median first autumn frost on 11 August, which leaves a median of 57 days between them.

Frost dates and growing season at Summit Grd STN
MeasureMedian, all yearsEarliest periodRecent period (1896 to 1946)Recent against earliestFitted trend
Last spring frost16 Junen/a16 Junen/an/a
First autumn frost11 Augustn/a11 Augustn/an/a
Growing days57 daysn/a57 daysn/an/a

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.

Download the Data

  • Data for Summit Grd STN standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Summit Grd STN 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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).