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Built 2026-10-19 (19 October 2026)

Cascade Summit Threshold Days by Year (USS0022F03S)

10 fixed thresholds counted per year at Cascade Summit (USS0022F03S): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Cascade Summit Thresholds

  • Cascade Summit: days with 10 mm (0.39 in) or more of precipitation in 46 years, most in 1996 with 92.
  • Cascade Summit: days with 25 mm (0.98 in) or more of precipitation in 46 years, most in 1996 with 38.
  • Cascade Summit: days with 50 mm (1.97 in) or more of precipitation in 39 years, most in 2014 with 7.
  • Cascade Summit: days with a maximum temperature at or below 0 C (32 F) in 38 years, most in 1990 with 49.
  • 10 fixed thresholds have at least one qualifying day at Cascade Summit.
33 years with a qualifying day
Days at or above 30 C (86 F) per year at Cascade Summit Days per year at Cascade Summit with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 15 in 1998. 0510151990: 81991: 11992: 91993: 11994: 31995: 11996: 141997: 11998: 151999: 12001: 22002: 102003: 112004: 62005: 32006: 72007: 32008: 52009: 72010: 12012: 32014: 22015: 62016: 22017: 102018: 32020: 32021: 62022: 92023: 32024: 22025: 22026: 3199019941998200320072012201720222026
Days per year at Cascade Summit with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 15 in 1998.
Days at or above 30 C (86 F) per year at Cascade Summit
YearDaysDecade average
199085.4
199115.4
199295.4
199315.4
199435.4
199515.4
1996145.4
199715.4
1998155.4
199915.4
200126
2002106
2003116
200466
200536
200676
200736
200856
200976
201013.9
201233.9
201423.9
201563.9
201623.9
2017103.9
201833.9
202034
202164
202294
202334
202424
202524
202634
First to last qualifying date each year at Cascade Summit For each year, a bar from the first to the last day at Cascade Summit meeting 30 C (86 F). 1990: 10 July 1990 to 11 August 19901991: 2 July 1991 to 2 July 19911992: 22 June 1992 to 17 August 19921993: 3 August 1993 to 3 August 19931994: 19 July 1994 to 21 July 19941995: 17 July 1995 to 17 July 19951996: 7 July 1996 to 25 August 19961997: 5 August 1997 to 5 August 19971998: 16 July 1998 to 6 September 19981999: 12 July 1999 to 12 July 19992001: 8 August 2001 to 9 August 20012002: 9 July 2002 to 15 August 20022003: 6 June 2003 to 3 September 20032004: 23 July 2004 to 13 August 20042005: 17 July 2005 to 4 August 20052006: 24 June 2006 to 23 July 20062007: 10 July 2007 to 29 August 20072008: 28 June 2008 to 17 August 20082009: 20 July 2009 to 19 August 20092010: 25 August 2010 to 25 August 20102012: 4 August 2012 to 17 August 20122014: 1 July 2014 to 10 August 20142015: 26 June 2015 to 1 August 20152016: 18 August 2016 to 19 August 20162017: 25 June 2017 to 5 September 20172018: 29 July 2018 to 9 August 20182020: 15 August 2020 to 6 September 20202021: 27 June 2021 to 14 August 20212022: 25 July 2022 to 6 September 20222023: 14 August 2023 to 16 August 20232024: 1 August 2024 to 31 August 20242025: 11 August 2025 to 23 August 20252026: 5 August 2026 to 7 August 20261990199520012006201220182024JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Cascade Summit meeting 30 C (86 F).
First to last qualifying date each year at Cascade Summit
YearFirst dateLast date
19901990-07-101990-08-11
19911991-07-021991-07-02
19921992-06-221992-08-17
19931993-08-031993-08-03
19941994-07-191994-07-21
19951995-07-171995-07-17
19961996-07-071996-08-25
19971997-08-051997-08-05
19981998-07-161998-09-06
19991999-07-121999-07-12
20012001-08-082001-08-09
20022002-07-092002-08-15
20032003-06-062003-09-03
20042004-07-232004-08-13
20052005-07-172005-08-04
20062006-06-242006-07-23
20072007-07-102007-08-29
20082008-06-282008-08-17
20092009-07-202009-08-19
20102010-08-252010-08-25
20122012-08-042012-08-17
20142014-07-012014-08-10
20152015-06-262015-08-01
20162016-08-182016-08-19
20172017-06-252017-09-05
20182018-07-292018-08-09
20202020-08-152020-09-06
20212021-06-272021-08-14
20222022-07-252022-09-06
20232023-08-142023-08-16
20242024-08-012024-08-31
20252025-08-112025-08-23
20262026-08-052026-08-07

Every Fixed Threshold

Fixed thresholds at Cascade Summit
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days331519983
90 F (32.2 C): Days14720032
0 C (32 F): Ice days (max384919904
0 C (32 F): Frost days (min36216199890
-10 C (14 F): Days with min351719945
-20 C (-4 F): Days with min3319892
10 mm (0.39 in): Days with 10 mm or more rain4692199629
25 mm (0.98 in): Days with 25 mm or more rain463819966
50 mm (1.97 in): Days with 50 mm or more rain39720143
100 mm (3.94 in): Days with 100 mm or more rain3119811

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1990.

Download the Data

  • Data for Cascade Summit 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). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-17).