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Summit Lake Weather Records (USS0022F14S)

Record envelope, standing records and threshold days for Summit Lake (USS0022F14S), Oregon, United States, with 49 years of record.

Key Facts for Summit Lake

  • Summit Lake (USS0022F14S) is a weather station in Oregon, United States at 43.45 latitude and -122.14 longitude, 1,710 m (5,610 ft) above sea level.
  • The station reports from 1978 to 2026, 49 years of record.
  • 1,464 records set at Summit Lake still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Summit Lake tied a daily record high maximum temperature of 22.8 C (73.0 F) on 8 October 2026 (provisional).

Provisional Records

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

About the Station

  • Location: Oregon, United States, 43.45 latitude, -122.14 longitude.
  • Elevation: 1,710 m (5,610 ft).
  • Period of record: 1978 to 2026, 49 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

16 days at or beyond a record
Daily record high and record low at Summit Lake, with 2026 drawn through them The band shows the record high and record low for each calendar day at Summit Lake. The lines show the 2026 daily maximum and minimum. 16 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 Lake. The lines show the 2026 daily maximum and minimum. 16 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Summit Lake, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan11.5 C (52.7 F)-25.1 C (-13.2 F)11.5 C (52.7 F)-10.5 C (13.1 F)
Feb14.5 C (58.1 F)-27.4 C (-17.3 F)12.0 C (53.6 F)-7.9 C (17.8 F)
Mar18.1 C (64.6 F)-22.4 C (-8.3 F)16.7 C (62.1 F)-7.4 C (18.7 F)
Apr24.9 C (76.8 F)-20.2 C (-4.4 F)17.2 C (63.0 F)-10.8 C (12.6 F)
May27.9 C (82.2 F)-12.8 C (9.0 F)22.5 C (72.5 F)-2.4 C (27.7 F)
Jun33.1 C (91.6 F)-6.5 C (20.3 F)26.3 C (79.3 F)-1.6 C (29.1 F)
Jul35.4 C (95.7 F)-5.3 C (22.5 F)28.2 C (82.8 F)0.4 C (32.7 F)
Aug34.6 C (94.3 F)-3.9 C (25.0 F)29.1 C (84.4 F)-0.3 C (31.5 F)
Sep34.6 C (94.3 F)-12.1 C (10.2 F)23.6 C (74.5 F)-1.2 C (29.8 F)
Oct25.9 C (78.6 F)-15.9 C (3.4 F)23.8 C (74.8 F)-4.0 C (24.8 F)
Nov16.1 C (61.0 F)-22.2 C (-8.0 F)n/an/a
Dec12.5 C (54.5 F)-28.3 C (-18.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Summit Lake by the year they were set 1,464 records at Summit Lake still stand. 1988 holds the most, with 95. 02550751001984: 251985: 481986: 781987: 781988: 951989: 271990: 441991: 291992: 371993: 301994: 371995: 351996: 381997: 161998: 241999: 342000: 182001: 312002: 362003: 262004: 152005: 162006: 342007: 272008: 402009: 232010: 212011: 272012: 232013: 422014: 312015: 612016: 302017: 332018: 232019: 212020: 222021: 322022: 462023: 212024: 192025: 322026: 39198419891994199920042009201420192024
1,464 records at Summit Lake still stand. 1988 holds the most, with 95.
Standing records at Summit Lake by the year they were set
Year setStanding records
198425
198548
198678
198778
198895
198927
199044
199129
199237
199330
199437
199535
199638
199716
199824
199934
200018
200131
200236
200326
200415
200516
200634
200727
200840
200923
201021
201127
201223
201342
201431
201561
201630
201733
201823
201921
202022
202132
202246
202321
202419
202532
202639

All-Time Record Progression

4 new records
When Summit Lake set new all-time records 4 all-time records were set at Summit Lake between 5 September 2017 and 17 August 2023. Each dot is a new record. Record high minimum temperature5 September 2017: Record high minimum temperature 13.4 C (56.1 F)28 June 2021: Record high minimum temperature 13.5 C (56.3 F)29 June 2021: Record high minimum temperature 13.8 C (56.8 F)17 August 2023: Record high minimum temperature 14.1 C (57.4 F)2020
4 all-time records were set at Summit Lake between 5 September 2017 and 17 August 2023. Each dot is a new record.
When Summit Lake set new all-time records
DateKindDetail
2017-09-05Record high minimum temperatureRecord high minimum temperature 13.4 C (56.1 F)
2021-06-28Record high minimum temperatureRecord high minimum temperature 13.5 C (56.3 F)
2021-06-29Record high minimum temperatureRecord high minimum temperature 13.8 C (56.8 F)
2023-08-17Record high minimum temperatureRecord high minimum temperature 14.1 C (57.4 F)

Wettest Day of Each Month

Nov: 180.3 mm (7.1 in)
Record daily precipitation for each month at Summit Lake The wettest day on record for each calendar month at Summit Lake. The most was 180.3 mm (7.1 in) on 18 November 1996. 050100150200 Jan: 86.4 mm (3.4 in), 10 January 2000 Jan Feb: 157.5 mm (6.2 in), 23 February 1986 Feb Mar: 94.0 mm (3.7 in), 16 March 2025 Mar Apr: 81.3 mm (3.2 in), 2 April 1983 Apr May: 50.8 mm (2.0 in), 9 May 1988 May Jun: 50.8 mm (2.0 in), 2 June 2010 Jun Jul: 38.1 mm (1.5 in), 13 July 1983 Jul Aug: 38.1 mm (1.5 in), 6 August 2003 Aug Sep: 86.4 mm (3.4 in), 29 September 2013 Sep Oct: 68.6 mm (2.7 in), 22 October 1985 Oct Nov: 180.3 mm (7.1 in), 18 November 1996 Nov Dec: 116.8 mm (4.6 in), 5 December 1981 Dec
The wettest day on record for each calendar month at Summit Lake. The most was 180.3 mm (7.1 in) on 18 November 1996.
Record daily precipitation for each month at Summit Lake
MonthRecord daily precipitation (mm)Date
Jan86.4 mm (3.4 in)10 January 2000
Feb157.5 mm (6.2 in)23 February 1986
Mar94.0 mm (3.7 in)16 March 2025
Apr81.3 mm (3.2 in)2 April 1983
May50.8 mm (2.0 in)9 May 1988
Jun50.8 mm (2.0 in)2 June 2010
Jul38.1 mm (1.5 in)13 July 1983
Aug38.1 mm (1.5 in)6 August 2003
Sep86.4 mm (3.4 in)29 September 2013
Oct68.6 mm (2.7 in)22 October 1985
Nov180.3 mm (7.1 in)18 November 1996
Dec116.8 mm (4.6 in)5 December 1981

Period of Record Coverage

1984 to 2026
Days with data per year at Summit Lake 43 years of record at Summit Lake, 1984 to 2026. 7 years have data for under 90 percent of days and are left out of rankings: 1984, 1985, 1988, 1989, 1993, 2025, 2026. 1984: 83 of 366 days1985: 168 of 365 days1986: 360 of 365 days1987: 363 of 365 days1988: 327 of 366 days1989: 296 of 365 days1990: 365 of 365 days1991: 365 of 365 days1992: 350 of 366 days1993: 322 of 365 days1994: 351 of 365 days1995: 356 of 365 days1996: 365 of 366 days1997: 364 of 365 days1998: 362 of 365 days1999: 364 of 365 days2000: 366 of 366 days2001: 364 of 365 days2002: 364 of 365 days2003: 365 of 365 days2004: 365 of 366 days2005: 365 of 365 days2006: 342 of 365 days2007: 365 of 365 days2008: 366 of 366 days2009: 329 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 363 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 366 of 366 days2017: 365 of 365 days2018: 365 of 365 days2019: 365 of 365 days2020: 364 of 366 days2021: 363 of 365 days2022: 364 of 365 days2023: 364 of 365 days2024: 365 of 366 days2025: 280 of 365 days2026: 284 of 365 days1990200020102020
43 years of record at Summit Lake, 1984 to 2026. 7 years have data for under 90 percent of days and are left out of rankings: 1984, 1985, 1988, 1989, 1993, 2025, 2026.
Days with data per year at Summit Lake
YearDays with dataShare of yearComplete
19848323%No
198516846%No
198636099%Yes
198736399%Yes
198832789%No
198929681%No
1990365100%Yes
1991365100%Yes
199235096%Yes
199332288%No
199435196%Yes
199535698%Yes
1996365100%Yes
1997364100%Yes
199836299%Yes
1999364100%Yes
2000366100%Yes
2001364100%Yes
2002364100%Yes
2003365100%Yes
2004365100%Yes
2005365100%Yes
200634294%Yes
2007365100%Yes
2008366100%Yes
200932990%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
201336399%Yes
2014365100%Yes
2015365100%Yes
2016366100%Yes
2017365100%Yes
2018365100%Yes
2019365100%Yes
202036499%Yes
202136399%Yes
2022364100%Yes
2023364100%Yes
2024365100%Yes
202528077%No
202628478%No

Latest Records

20
Latest records at Summit Lake
DateStationRecordValueBeat old record byOld record stoodSignificance
8 October 2026Summit Lake, USdaily high max (Tie, Provisional)22.8 C (73.0 F)tie29 years3 of 100 (Routine)
7 October 2026Summit Lake, USdaily high max (Provisional)23.7 C (74.7 F)2.4 C (4.3 F)29 years16 of 100 (Routine)
6 October 2026Summit Lake, USdaily high max (Provisional)22.7 C (72.9 F)0.8 C (1.4 F)39 years16 of 100 (Routine)
4 October 2026Summit Lake, USdaily high max (Provisional)23.8 C (74.8 F)3.0 C (5.4 F)4 years10 of 100 (Routine)
3 October 2026Summit Lake, USdaily high max (Provisional)23.2 C (73.8 F)1.5 C (2.7 F)24 years13 of 100 (Routine)
13 September 2026Summit Lake, USdaily rain (Tie, Provisional)10.2 mm (0.4 in)tie21 years2 of 100 (Routine)
6 September 2026Summit Lake, USdaily low max (Provisional)5.7 C (42.3 F)3.5 C (6.3 F)24 years16 of 100 (Routine)
4 September 2026Summit Lake, USdaily low max (Provisional)7.5 C (45.5 F)0.5 C (0.9 F)11 years7 of 100 (Routine)
3 September 2026Summit Lake, USdaily low max (Provisional)7.0 C (44.6 F)0.3 C (0.5 F)25 years11 of 100 (Routine)
2 September 2026Summit Lake, USdaily rain (Provisional)33.0 mm (1.3 in)22.8 mm (0.9 in)44 years40 of 100 (Notable)
29 August 2026Summit Lake, USdaily low min (Provisional)0.1 C (32.2 F)1.2 C (2.2 F)33 years18 of 100 (Routine)
4 August 2026Summit Lake, USdaily rain (Tie)2.5 mm (0.10 in)tie39 years3 of 100 (Routine)
21 July 2026Summit Lake, USdaily high min11.8 C (53.2 F)0.1 C (0.2 F)20 years10 of 100 (Routine)
20 July 2026Summit Lake, USdaily high min12.7 C (54.9 F)2.6 C (4.7 F)11 years15 of 100 (Routine)
6 July 2026Summit Lake, USdaily rain30.5 mm (1.2 in)20.3 mm (0.8 in)31 years40 of 100 (Notable)
27 June 2026Summit Lake, USdaily rain20.3 mm (0.8 in)5.1 mm (0.20 in)24 years17 of 100 (Routine)
27 June 2026Summit Lake, USdaily low max5.3 C (41.5 F)3.4 C (6.1 F)20 years15 of 100 (Routine)
19 June 2026Summit Lake, USdaily high min5.8 C (42.4 F)0.6 C (1.1 F)19 years11 of 100 (Routine)
16 June 2026Summit Lake, USdaily high min6.9 C (44.4 F)2.3 C (4.1 F)12 years15 of 100 (Routine)
15 June 2026Summit Lake, USdaily high max26.3 C (79.3 F)1.2 C (2.2 F)37 years16 of 100 (Routine)

Climate Trend

33 complete years, 1986 to 2024
Annual mean temperature at Summit Lake as warming stripes, 1986 to 2024 One stripe for each of 33 complete years at Summit Lake, 1986 to 2024. Blue stripes are years cooler than the station's own mean of 4.2 C (39.6 F); red stripes are warmer. The coolest year was 1993, at 2.8 C (37.0 F), and the warmest was 2015, at 6.1 C (43.0 F). The strongest colour marks a difference of 1.9 C (3.4 F). 1986: 3.3 C, -0.9 C from the station mean1990: 3.4 C, -0.8 C from the station mean1991: 3.7 C, -0.5 C from the station mean1993: 2.8 C, -1.4 C from the station mean1994: 3.4 C, -0.8 C from the station mean1995: 4.0 C, -0.2 C from the station mean1996: 3.8 C, -0.5 C from the station mean1997: 3.5 C, -0.7 C from the station mean1998: 3.7 C, -0.5 C from the station mean1999: 3.2 C, -1.0 C from the station mean2000: 3.5 C, -0.7 C from the station mean2001: 3.7 C, -0.5 C from the station mean2002: 3.8 C, -0.4 C from the station mean2003: 4.3 C, +0.1 C from the station mean2004: 4.3 C, 0.0 C from the station mean2005: 3.9 C, -0.3 C from the station mean2007: 4.3 C, +0.1 C from the station mean2008: 3.9 C, -0.3 C from the station mean2010: 4.1 C, -0.1 C from the station mean2011: 3.8 C, -0.4 C from the station mean2012: 4.5 C, +0.2 C from the station mean2013: 5.0 C, +0.8 C from the station mean2014: 5.5 C, +1.3 C from the station mean2015: 6.1 C, +1.9 C from the station mean2016: 4.8 C, +0.6 C from the station mean2017: 4.7 C, +0.4 C from the station mean2018: 5.0 C, +0.8 C from the station mean2019: 4.3 C, +0.1 C from the station mean2020: 4.9 C, +0.7 C from the station mean2021: 5.1 C, +0.9 C from the station mean2022: 4.9 C, +0.7 C from the station mean2023: 4.5 C, +0.3 C from the station mean2024: 5.3 C, +1.0 C from the station mean19861990199520002005201020152020
One stripe for each of 33 complete years at Summit Lake, 1986 to 2024. Blue stripes are years cooler than the station's own mean of 4.2 C (39.6 F); red stripes are warmer. The coolest year was 1993, at 2.8 C (37.0 F), and the warmest was 2015, at 6.1 C (43.0 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at Summit Lake as warming stripes, 1986 to 2024
YearAnnual mean temperatureDifference from the station mean
19863.3 C-0.94 C
19903.4 C-0.80 C
19913.7 C-0.54 C
19932.8 C-1.41 C
19943.4 C-0.76 C
19954.0 C-0.21 C
19963.8 C-0.45 C
19973.5 C-0.72 C
19983.7 C-0.52 C
19993.2 C-0.96 C
20003.5 C-0.70 C
20013.7 C-0.48 C
20023.8 C-0.41 C
20034.3 C+0.13 C
20044.3 C+0.05 C
20053.9 C-0.29 C
20074.3 C+0.13 C
20083.9 C-0.34 C
20104.1 C-0.14 C
20113.8 C-0.44 C
20124.5 C+0.25 C
20135.0 C+0.83 C
20145.5 C+1.33 C
20156.1 C+1.89 C
20164.8 C+0.57 C
20174.7 C+0.45 C
20185.0 C+0.77 C
20194.3 C+0.11 C
20204.9 C+0.70 C
20215.1 C+0.93 C
20224.9 C+0.68 C
20234.5 C+0.32 C
20245.3 C+1.05 C

The annual mean temperature here has risen by 0.6 C (0.4 to 0.7) per decade over 1986 to 2024. In Fahrenheit: 1.0 F (0.7 to 1.3) per decade. The slope is a straight line fitted to 33 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Summit Lake
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.6 C (0.4 to 0.7) per decade1.0 F (0.7 to 1.3) per decade1986 to 202433Rise
Mean daily maximum0.3 C (0.1 to 0.5) per decade0.5 F (0.1 to 0.8) per decade1986 to 202433Rise
Mean daily minimum0.8 C (0.7 to 1.0) per decade1.5 F (1.2 to 1.8) per decade1986 to 202433Rise

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

1978 to 2026
Yearly extremes at Summit Lake: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)35.4 C (95.7 F)200230.2 C (86.4 F)43
Coldest night (TNn)-28.3 C (-18.9 F)1990-19.7 C (-3.5 F)43
Wettest day (Rx1day)180.3 mm (7.1 in)199661.0 mm (2.4 in)48
Wettest five days (Rx5day)302.3 mm (11.9 in)1986153.7 mm (6.1 in)48
Longest dry spell (CDD)62 days198433 days48

Hottest day (TXx)

Hottest day (TXx) at Summit Lake by year The hottest day of the year at Summit Lake, 1978 to 2026. The record is 35.4 C (95.7 F) in 2002, marked on the chart; the median year is 30.2 C (86.4 F). 15202530354019801990200020102020Record: 35.4 C (95.7 F) in 2002
The hottest day of the year at Summit Lake, 1978 to 2026. The record is 35.4 C (95.7 F) in 2002, marked on the chart; the median year is 30.2 C (86.4 F).
Hottest day (TXx) at Summit Lake by year
YearHottest day (TXx)
1978n/a
1979n/a
1981n/a
1982n/a
1983n/a
198417.3 C (63.1 F)
198515.8 C (60.4 F)
198632.4 C (90.3 F)
198732.5 C (90.5 F)
198834.7 C (94.5 F)
198925.2 C (77.4 F)
199030.6 C (87.1 F)
199130.3 C (86.5 F)
199232.1 C (89.8 F)
199329.6 C (85.3 F)
199431.0 C (87.8 F)
199528.7 C (83.7 F)
199632.2 C (90.0 F)
199727.3 C (81.1 F)
199834.6 C (94.3 F)
199927.8 C (82.0 F)
200027.7 C (81.9 F)
200130.2 C (86.4 F)
200235.4 C (95.7 F)
200331.6 C (88.9 F)
200430.8 C (87.4 F)
200530.2 C (86.4 F)
200632.7 C (90.9 F)
200729.3 C (84.7 F)
200831.1 C (88.0 F)
200928.9 C (84.0 F)
201027.7 C (81.9 F)
201125.3 C (77.5 F)
201228.9 C (84.0 F)
201333.5 C (92.3 F)
201429.2 C (84.6 F)
201530.4 C (86.7 F)
201628.7 C (83.7 F)
201730.7 C (87.3 F)
201828.3 C (82.9 F)
201926.6 C (79.9 F)
202029.5 C (85.1 F)
202133.1 C (91.6 F)
202232.0 C (89.6 F)
202329.2 C (84.6 F)
202430.3 C (86.5 F)
202528.5 C (83.3 F)
202629.1 C (84.4 F)

Coldest night (TNn)

Coldest night (TNn) at Summit Lake by year The coldest night of the year at Summit Lake, 1978 to 2026. The record is -28.3 C (-18.9 F) in 1990, marked on the chart; the median year is -19.7 C (-3.5 F). -30-25-20-15-1019801990200020102020Record: -28.3 C (-18.9 F) in 1990
The coldest night of the year at Summit Lake, 1978 to 2026. The record is -28.3 C (-18.9 F) in 1990, marked on the chart; the median year is -19.7 C (-3.5 F).
Coldest night (TNn) at Summit Lake by year
YearColdest night (TNn)
1978n/a
1979n/a
1981n/a
1982n/a
1983n/a
1984-21.2 C (-6.2 F)
1985-27.4 C (-17.3 F)
1986-17.9 C (-0.2 F)
1987-22.2 C (-8.0 F)
1988-25.1 C (-13.2 F)
1989-20.9 C (-5.6 F)
1990-28.3 C (-18.9 F)
1991-16.2 C (2.8 F)
1992-16.9 C (1.6 F)
1993-21.8 C (-7.2 F)
1994-18.9 C (-2.0 F)
1995-21.1 C (-6.0 F)
1996-20.0 C (-4.0 F)
1997-19.3 C (-2.7 F)
1998-25.4 C (-13.7 F)
1999-19.7 C (-3.5 F)
2000-17.6 C (0.3 F)
2001-19.8 C (-3.6 F)
2002-23.6 C (-10.5 F)
2003-15.7 C (3.7 F)
2004-13.5 C (7.7 F)
2005-17.0 C (1.4 F)
2006-22.4 C (-8.3 F)
2007-22.2 C (-8.0 F)
2008-18.6 C (-1.5 F)
2009-24.0 C (-11.2 F)
2010-17.1 C (1.2 F)
2011-21.5 C (-6.7 F)
2012-16.0 C (3.2 F)
2013-26.8 C (-16.2 F)
2014-15.0 C (5.0 F)
2015-18.9 C (-2.0 F)
2016-19.7 C (-3.5 F)
2017-23.7 C (-10.7 F)
2018-21.0 C (-5.8 F)
2019-19.9 C (-3.8 F)
2020-16.8 C (1.8 F)
2021-13.9 C (7.0 F)
2022-19.6 C (-3.3 F)
2023-20.5 C (-4.9 F)
2024-13.0 C (8.6 F)
2025-15.6 C (3.9 F)
2026-10.8 C (12.6 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Summit Lake by year The wettest day of the year at Summit Lake, 1978 to 2026. The record is 180.3 mm (7.1 in) in 1996, marked on the chart; the median year is 61.0 mm (2.4 in). 05010015020019801990200020102020Record: 180.3 mm (7.1 in) in 1996
The wettest day of the year at Summit Lake, 1978 to 2026. The record is 180.3 mm (7.1 in) in 1996, marked on the chart; the median year is 61.0 mm (2.4 in).
Wettest day (Rx1day) at Summit Lake by year
YearWettest day (Rx1day)
197861.0 mm (2.4 in)
197953.3 mm (2.1 in)
1981116.8 mm (4.6 in)
1982147.3 mm (5.8 in)
1983114.3 mm (4.5 in)
198463.5 mm (2.5 in)
198568.6 mm (2.7 in)
1986157.5 mm (6.2 in)
198763.5 mm (2.5 in)
198861.0 mm (2.4 in)
198971.1 mm (2.8 in)
199063.5 mm (2.5 in)
199155.9 mm (2.2 in)
199258.4 mm (2.3 in)
199353.3 mm (2.1 in)
199458.4 mm (2.3 in)
199550.8 mm (2.0 in)
1996180.3 mm (7.1 in)
199758.4 mm (2.3 in)
199881.3 mm (3.2 in)
199953.3 mm (2.1 in)
200086.4 mm (3.4 in)
200153.3 mm (2.1 in)
200253.3 mm (2.1 in)
200371.1 mm (2.8 in)
200481.3 mm (3.2 in)
200578.7 mm (3.1 in)
200668.6 mm (2.7 in)
200758.4 mm (2.3 in)
200861.0 mm (2.4 in)
200955.9 mm (2.2 in)
201055.9 mm (2.2 in)
201188.9 mm (3.5 in)
201266.0 mm (2.6 in)
201386.4 mm (3.4 in)
201448.3 mm (1.9 in)
201555.9 mm (2.2 in)
201668.6 mm (2.7 in)
201748.3 mm (1.9 in)
201845.7 mm (1.8 in)
201988.9 mm (3.5 in)
202058.4 mm (2.3 in)
202155.9 mm (2.2 in)
202248.3 mm (1.9 in)
202350.8 mm (2.0 in)
202458.4 mm (2.3 in)
202594.0 mm (3.7 in)
202643.2 mm (1.7 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Summit Lake by year The wettest five days of the year at Summit Lake, 1978 to 2026. The record is 302.3 mm (11.9 in) in 1986, marked on the chart; the median year is 153.7 mm (6.1 in). 010020030040019801990200020102020Record: 302.3 mm (11.9 in) in 1986
The wettest five days of the year at Summit Lake, 1978 to 2026. The record is 302.3 mm (11.9 in) in 1986, marked on the chart; the median year is 153.7 mm (6.1 in).
Wettest five days (Rx5day) at Summit Lake by year
YearWettest five days (Rx5day)
1978134.6 mm (5.3 in)
1979134.6 mm (5.3 in)
1981162.5 mm (6.4 in)
1982274.3 mm (10.8 in)
1983198.1 mm (7.8 in)
1984134.7 mm (5.3 in)
1985129.6 mm (5.1 in)
1986302.3 mm (11.9 in)
1987147.3 mm (5.8 in)
1988160.0 mm (6.3 in)
1989116.8 mm (4.6 in)
1990132.1 mm (5.2 in)
1991139.7 mm (5.5 in)
1992165.2 mm (6.5 in)
1993124.3 mm (4.9 in)
1994119.5 mm (4.7 in)
1995147.3 mm (5.8 in)
1996274.4 mm (10.8 in)
1997193.1 mm (7.6 in)
1998233.7 mm (9.2 in)
1999152.4 mm (6.0 in)
2000216.0 mm (8.5 in)
2001121.9 mm (4.8 in)
2002157.4 mm (6.2 in)
2003132.0 mm (5.2 in)
2004210.8 mm (8.3 in)
2005231.2 mm (9.1 in)
2006180.4 mm (7.1 in)
2007160.1 mm (6.3 in)
2008165.1 mm (6.5 in)
2009127.1 mm (5.0 in)
2010147.3 mm (5.8 in)
2011149.8 mm (5.9 in)
2012185.4 mm (7.3 in)
2013157.6 mm (6.2 in)
2014137.2 mm (5.4 in)
2015175.3 mm (6.9 in)
2016221.0 mm (8.7 in)
2017134.6 mm (5.3 in)
2018109.1 mm (4.3 in)
2019200.5 mm (7.9 in)
2020142.2 mm (5.6 in)
2021132.2 mm (5.2 in)
2022155.0 mm (6.1 in)
2023149.9 mm (5.9 in)
2024205.7 mm (8.1 in)
2025208.4 mm (8.2 in)
202676.2 mm (3.0 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Summit Lake by year The longest dry spell of the year at Summit Lake, 1978 to 2026. The record is 62 days in 1984, marked on the chart; the median year is 33 days. 02040608019801990200020102020Record: 62 days in 1984
The longest dry spell of the year at Summit Lake, 1978 to 2026. The record is 62 days in 1984, marked on the chart; the median year is 33 days.
Longest dry spell (CDD) at Summit Lake by year
YearLongest dry spell (CDD)
197827 days
197934 days
198117 days
198227 days
198315 days
198462 days
198553 days
198641 days
198757 days
198842 days
198926 days
199020 days
199141 days
199230 days
199338 days
199438 days
199536 days
199630 days
199741 days
199850 days
199933 days
200045 days
200132 days
200233 days
200345 days
200431 days
200561 days
200654 days
200723 days
200838 days
200931 days
201039 days
201124 days
201243 days
201318 days
201424 days
201547 days
201634 days
201729 days
201827 days
201943 days
202029 days
202162 days
202226 days
202321 days
202429 days
202523 days
202618 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

33 years with a frost

Across 33 years with a frost, the median last spring frost at Summit Lake falls on 22 June and the median first autumn frost on 27 August, which leaves a median of 58 days between them.

Fitted over all years, the growing season changes by +29.5 days per decade at this station.

Frost dates and growing season at Summit Lake
MeasureMedian, all yearsEarliest periodRecent period (1993 to 2024)Recent against earliestFitted trend
Last spring frost22 Junen/a22 Junen/a-3.2 days per decade
First autumn frost27 Augustn/a1 Septembern/a+26.3 days per decade
Growing days58 daysn/a72 daysn/a+29.5 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

44 years, 1982 to 2025

A day with at least 62.2 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 206.9 mm (8.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Summit Lake: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years62.2 mm (2.4 in)
5 years80.7 mm (3.2 in)
10 years98.5 mm (3.9 in)
25 years130.4 mm (5.1 in)
50 years163.4 mm (6.4 in)Longer than the 44 years of record
100 years206.9 mm (8.1 in)Longer than the 44 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 44 years of values from 1982 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: 180.3 mm (7.1 in) in 1996; 157.5 mm (6.2 in) in 1986; 147.3 mm (5.8 in) in 1982.

Download the Data

  • Data for Summit Lake standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Summit Lake 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-14).