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Built 2026-10-18 (18 October 2026)

Mount Stella Oregon Threshold Days by Year

11 fixed thresholds counted per year at Mount Stella Oregon (USR0000OMOU): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mount Stella Oregon Thresholds

  • Mount Stella Oregon: days with a maximum temperature at or below 0 C (32 F) in 34 years, most in 1990 with 57.
  • Mount Stella Oregon: nights with a minimum temperature at or below 0 C (32 F) in 34 years, most in 1994 with 172.
  • Mount Stella Oregon: days with a maximum temperature at or above 30 C (86 F) in 33 years, most in 2021 with 59.
  • Mount Stella Oregon: days with a maximum temperature at or above 90 F (32.2 C) in 30 years, most in 2021 with 43.
  • 11 fixed thresholds have at least one qualifying day at Mount Stella Oregon.
33 years with a qualifying day
Days at or above 30 C (86 F) per year at Mount Stella Oregon Days per year at Mount Stella Oregon with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 59 in 2021. 02040601988: 111990: 81991: 61992: 121994: 71995: 11997: 121998: 321999: 192000: 212001: 252002: 282003: 502005: 312006: 582007: 332009: 582011: 272012: 292013: 392014: 412015: 402016: 432017: 562018: 262019: 282020: 442021: 592022: 502023: 452024: 452025: 482026: 43198819941999200320092014201820222026
Days per year at Mount Stella Oregon with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 59 in 2021.
Days at or above 30 C (86 F) per year at Mount Stella Oregon
YearDaysDecade average
19881111
1990812.1
1991612.1
19921212.1
1994712.1
1995112.1
19971212.1
19983212.1
19991912.1
20002138
20012538
20022838
20035038
20053138
20065838
20073338
20095838
20112736.6
20122936.6
20133936.6
20144136.6
20154036.6
20164336.6
20175636.6
20182636.6
20192836.6
20204447.7
20215947.7
20225047.7
20234547.7
20244547.7
20254847.7
20264347.7
First to last qualifying date each year at Mount Stella Oregon For each year, a bar from the first to the last day at Mount Stella Oregon meeting 30 C (86 F). 1988: 19 July 1988 to 4 September 19881990: 10 July 1990 to 11 August 19901991: 2 July 1991 to 25 September 19911992: 21 June 1992 to 18 August 19921994: 16 July 1994 to 27 September 19941995: 13 September 1995 to 13 September 19951997: 11 May 1997 to 16 August 19971998: 6 July 1998 to 14 September 19981999: 23 May 1999 to 22 September 19992000: 20 June 2000 to 13 September 20002001: 11 May 2001 to 30 September 20012002: 12 June 2002 to 23 September 20022003: 23 May 2003 to 27 September 20032005: 26 May 2005 to 1 September 20052006: 15 May 2006 to 29 September 20062007: 30 May 2007 to 12 September 20072009: 16 May 2009 to 27 September 20092011: 21 June 2011 to 24 September 20112012: 7 July 2012 to 1 October 20122013: 4 June 2013 to 14 September 20132014: 30 June 2014 to 20 September 20142015: 6 June 2015 to 15 October 20152016: 31 May 2016 to 26 September 20162017: 23 May 2017 to 11 September 20172018: 24 June 2018 to 27 September 20182019: 10 June 2019 to 5 September 20192020: 28 May 2020 to 29 September 20202021: 31 May 2021 to 8 September 20212022: 25 June 2022 to 10 September 20222023: 28 April 2023 to 17 September 20232024: 7 June 2024 to 8 September 20242025: 30 May 2025 to 24 September 20252026: 14 June 2026 to 8 October 20261988199520012007201420192024JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Mount Stella Oregon meeting 30 C (86 F).
First to last qualifying date each year at Mount Stella Oregon
YearFirst dateLast date
19881988-07-191988-09-04
19901990-07-101990-08-11
19911991-07-021991-09-25
19921992-06-211992-08-18
19941994-07-161994-09-27
19951995-09-131995-09-13
19971997-05-111997-08-16
19981998-07-061998-09-14
19991999-05-231999-09-22
20002000-06-202000-09-13
20012001-05-112001-09-30
20022002-06-122002-09-23
20032003-05-232003-09-27
20052005-05-262005-09-01
20062006-05-152006-09-29
20072007-05-302007-09-12
20092009-05-162009-09-27
20112011-06-212011-09-24
20122012-07-072012-10-01
20132013-06-042013-09-14
20142014-06-302014-09-20
20152015-06-062015-10-15
20162016-05-312016-09-26
20172017-05-232017-09-11
20182018-06-242018-09-27
20192019-06-102019-09-05
20202020-05-282020-09-29
20212021-05-312021-09-08
20222022-06-252022-09-10
20232023-04-282023-09-17
20242024-06-072024-09-08
20252025-05-302025-09-24
20262026-06-142026-10-08

Every Fixed Threshold

Fixed thresholds at Mount Stella Oregon
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3359202143
35 C (95 F): Days211920094
40 C (104 F): Days2220222
90 F (32.2 C): Days3043202118
100 F (37.8 C): Days12720225
0 C (32 F): Ice days (max345719904
0 C (32 F): Frost days (min34172199439
-10 C (14 F): Days with min231519901
-20 C (-4 F): Days with min2219892
20 C (68 F): Tropical nights (min191220224
25 C (77 F): Days with min2120221

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1988.

Download the Data

  • Data for Mount Stella 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-16).