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Built 2026-10-17 (17 October 2026)

Grassy Mountain Oregon Threshold Days by Year

11 fixed thresholds counted per year at Grassy Mountain Oregon (USR0000OGRM): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Grassy Mountain Oregon Thresholds

  • Grassy Mountain Oregon: days with a maximum temperature at or above 30 C (86 F) in 41 years, most in 2007 with 79.
  • Grassy Mountain Oregon: days with a maximum temperature at or above 90 F (32.2 C) in 41 years, most in 2021 with 59.
  • Grassy Mountain Oregon: days with a maximum temperature at or below 0 C (32 F) in 41 years, most in 1993 with 37.
  • Grassy Mountain Oregon: nights with a minimum temperature at or below 0 C (32 F) in 41 years, most in 2022 with 164.
  • 11 fixed thresholds have at least one qualifying day at Grassy Mountain Oregon.
41 years with a qualifying day
Days at or above 30 C (86 F) per year at Grassy Mountain Oregon Days per year at Grassy Mountain Oregon with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 79 in 2007. 0204060801986: 491987: 281988: 531989: 291990: 611991: 561992: 521993: 211994: 751995: 491996: 601997: 441998: 591999: 512000: 712001: 702002: 652003: 782004: 512005: 572006: 732007: 792008: 722009: 672010: 642011: 662012: 732013: 672014: 532015: 592016: 562017: 712018: 562019: 492020: 662021: 722022: 762023: 532024: 722025: 662026: 68198619911996200120062011201620212026
Days per year at Grassy Mountain Oregon with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 79 in 2007.
Days at or above 30 C (86 F) per year at Grassy Mountain Oregon
YearDaysDecade average
19864939.8
19872839.8
19885339.8
19892939.8
19906152.8
19915652.8
19925252.8
19932152.8
19947552.8
19954952.8
19966052.8
19974452.8
19985952.8
19995152.8
20007168.3
20017068.3
20026568.3
20037868.3
20045168.3
20055768.3
20067368.3
20077968.3
20087268.3
20096768.3
20106461.4
20116661.4
20127361.4
20136761.4
20145361.4
20155961.4
20165661.4
20177161.4
20185661.4
20194961.4
20206667.6
20217267.6
20227667.6
20235367.6
20247267.6
20256667.6
20266867.6
First to last qualifying date each year at Grassy Mountain Oregon For each year, a bar from the first to the last day at Grassy Mountain Oregon meeting 30 C (86 F). 1986: 26 May 1986 to 7 September 19861987: 4 June 1987 to 24 September 19871988: 15 June 1988 to 6 September 19881989: 14 June 1989 to 14 August 19891990: 20 June 1990 to 14 September 19901991: 10 June 1991 to 10 October 19911992: 6 May 1992 to 1 October 19921993: 19 June 1993 to 4 October 19931994: 10 June 1994 to 27 September 19941995: 25 June 1995 to 15 September 19951996: 3 June 1996 to 9 October 19961997: 30 May 1997 to 10 September 19971998: 29 June 1998 to 16 September 19981999: 27 May 1999 to 22 September 19992000: 21 May 2000 to 27 September 20002001: 11 May 2001 to 1 October 20012002: 29 May 2002 to 15 September 20022003: 22 May 2003 to 21 October 20032004: 3 June 2004 to 25 September 20042005: 20 June 2005 to 8 September 20052006: 15 May 2006 to 13 September 20062007: 11 May 2007 to 13 September 20072008: 16 May 2008 to 1 October 20082009: 17 May 2009 to 26 September 20092010: 23 June 2010 to 2 October 20102011: 22 June 2011 to 30 September 20112012: 22 April 2012 to 21 September 20122013: 11 May 2013 to 1 September 20132014: 9 June 2014 to 24 September 20142015: 8 June 2015 to 9 October 20152016: 1 June 2016 to 28 September 20162017: 6 June 2017 to 11 September 20172018: 3 June 2018 to 7 September 20182019: 12 June 2019 to 14 September 20192020: 28 May 2020 to 4 October 20202021: 1 June 2021 to 17 September 20212022: 10 June 2022 to 27 September 20222023: 30 June 2023 to 16 September 20232024: 6 June 2024 to 28 September 20242025: 28 May 2025 to 19 September 20252026: 10 May 2026 to 7 October 20261986199219982004201020162022JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Grassy Mountain Oregon meeting 30 C (86 F).
First to last qualifying date each year at Grassy Mountain Oregon
YearFirst dateLast date
19861986-05-261986-09-07
19871987-06-041987-09-24
19881988-06-151988-09-06
19891989-06-141989-08-14
19901990-06-201990-09-14
19911991-06-101991-10-10
19921992-05-061992-10-01
19931993-06-191993-10-04
19941994-06-101994-09-27
19951995-06-251995-09-15
19961996-06-031996-10-09
19971997-05-301997-09-10
19981998-06-291998-09-16
19991999-05-271999-09-22
20002000-05-212000-09-27
20012001-05-112001-10-01
20022002-05-292002-09-15
20032003-05-222003-10-21
20042004-06-032004-09-25
20052005-06-202005-09-08
20062006-05-152006-09-13
20072007-05-112007-09-13
20082008-05-162008-10-01
20092009-05-172009-09-26
20102010-06-232010-10-02
20112011-06-222011-09-30
20122012-04-222012-09-21
20132013-05-112013-09-01
20142014-06-092014-09-24
20152015-06-082015-10-09
20162016-06-012016-09-28
20172017-06-062017-09-11
20182018-06-032018-09-07
20192019-06-122019-09-14
20202020-05-282020-10-04
20212021-06-012021-09-17
20222022-06-102022-09-27
20232023-06-302023-09-16
20242024-06-062024-09-28
20252025-05-282025-09-19
20262026-05-102026-10-07

Every Fixed Threshold

Fixed thresholds at Grassy Mountain Oregon
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days4179200768
35 C (95 F): Days3931202219
40 C (104 F): Days6420022
90 F (32.2 C): Days4159202147
100 F (37.8 C): Days271120242
0 C (32 F): Ice days (max413719937
0 C (32 F): Frost days (min41164202259
-10 C (14 F): Days with min413019932
-20 C (-4 F): Days with min6719901
20 C (68 F): Tropical nights (min3619202113
25 C (77 F): Days with min1119921

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1986.

Download the Data

  • Data for Grassy Mountain 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-15).