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Built 2026-10-16 (16 October 2026)

Summit Oregon Threshold Days by Year

9 fixed thresholds counted per year at Summit Oregon (USR0000OSUM): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Summit Oregon Thresholds

  • Summit Oregon: days with a maximum temperature at or below 0 C (32 F) in 34 years, most in 1998 with 61.
  • Summit Oregon: nights with a minimum temperature at or below 0 C (32 F) in 34 years, most in 2011 with 197.
  • Summit Oregon: nights with a minimum temperature at or below -10 C (14 F) in 34 years, most in 2006 with 24.
  • Summit Oregon: days with a maximum temperature at or above 30 C (86 F) in 33 years, most in 2021 with 36.
  • 9 fixed thresholds have at least one qualifying day at Summit Oregon.
33 years with a qualifying day
Days at or above 30 C (86 F) per year at Summit Oregon Days per year at Summit Oregon with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 36 in 2021. 0102030401992: 61994: 61996: 121997: 31998: 191999: 52000: 52001: 92002: 112003: 152004: 42005: 122006: 152007: 152008: 182009: 242010: 92011: 32012: 152013: 162014: 182015: 172016: 152017: 272018: 212019: 22020: 182021: 362022: 292023: 112024: 282025: 132026: 14199219982002200620102014201820222026
Days per year at Summit Oregon with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 36 in 2021.
Days at or above 30 C (86 F) per year at Summit Oregon
YearDaysDecade average
199268.5
199468.5
1996128.5
199738.5
1998198.5
199958.5
2000512.8
2001912.8
20021112.8
20031512.8
2004412.8
20051212.8
20061512.8
20071512.8
20081812.8
20092412.8
2010914.3
2011314.3
20121514.3
20131614.3
20141814.3
20151714.3
20161514.3
20172714.3
20182114.3
2019214.3
20201821.3
20213621.3
20222921.3
20231121.3
20242821.3
20251321.3
20261421.3
First to last qualifying date each year at Summit Oregon For each year, a bar from the first to the last day at Summit Oregon meeting 30 C (86 F). 1992: 22 June 1992 to 18 August 19921994: 16 July 1994 to 28 July 19941996: 7 July 1996 to 23 August 19961997: 5 August 1997 to 7 August 19971998: 16 July 1998 to 4 September 19981999: 10 July 1999 to 26 August 19992000: 29 July 2000 to 7 August 20002001: 2 July 2001 to 27 August 20012002: 26 June 2002 to 15 August 20022003: 9 July 2003 to 3 September 20032004: 9 August 2004 to 12 August 20042005: 14 July 2005 to 6 August 20052006: 24 June 2006 to 20 August 20062007: 3 July 2007 to 29 August 20072008: 27 April 2008 to 17 August 20082009: 16 July 2009 to 25 September 20092010: 15 July 2010 to 25 August 20102011: 6 July 2011 to 26 August 20112012: 7 July 2012 to 17 August 20122013: 9 June 2013 to 19 August 20132014: 1 July 2014 to 3 August 20142015: 8 June 2015 to 12 September 20152016: 24 July 2016 to 20 August 20162017: 19 June 2017 to 11 September 20172018: 12 July 2018 to 10 August 20182019: 27 August 2019 to 28 August 20192020: 23 June 2020 to 6 September 20202021: 2 June 2021 to 7 September 20212022: 11 July 2022 to 10 September 20222023: 15 July 2023 to 15 August 20232024: 4 July 2024 to 6 September 20242025: 30 June 2025 to 2 September 20252026: 22 July 2026 to 20 August 20261992199920042009201420192024JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Summit Oregon meeting 30 C (86 F).
First to last qualifying date each year at Summit Oregon
YearFirst dateLast date
19921992-06-221992-08-18
19941994-07-161994-07-28
19961996-07-071996-08-23
19971997-08-051997-08-07
19981998-07-161998-09-04
19991999-07-101999-08-26
20002000-07-292000-08-07
20012001-07-022001-08-27
20022002-06-262002-08-15
20032003-07-092003-09-03
20042004-08-092004-08-12
20052005-07-142005-08-06
20062006-06-242006-08-20
20072007-07-032007-08-29
20082008-04-272008-08-17
20092009-07-162009-09-25
20102010-07-152010-08-25
20112011-07-062011-08-26
20122012-07-072012-08-17
20132013-06-092013-08-19
20142014-07-012014-08-03
20152015-06-082015-09-12
20162016-07-242016-08-20
20172017-06-192017-09-11
20182018-07-122018-08-10
20192019-08-272019-08-28
20202020-06-232020-09-06
20212021-06-022021-09-07
20222022-07-112022-09-10
20232023-07-152023-08-15
20242024-07-042024-09-06
20252025-06-302025-09-02
20262026-07-222026-08-20

Every Fixed Threshold

Fixed thresholds at Summit Oregon
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3336202114
35 C (95 F): Days5420081
90 F (32.2 C): Days271420244
100 F (37.8 C): Days1120081
0 C (32 F): Ice days (max346119988
0 C (32 F): Frost days (min34197201176
-10 C (14 F): Days with min342420063
-20 C (-4 F): Days with min2219981
20 C (68 F): Tropical nights (min9420084

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1992.

Download the Data

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

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