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Built 2026-10-15 (15 October 2026)

Santa Rosa Plateau California Threshold Days by Year

10 fixed thresholds counted per year at Santa Rosa Plateau California (USR0000CSRO): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Santa Rosa Plateau California Thresholds

  • Santa Rosa Plateau California: days with a maximum temperature at or above 30 C (86 F) in 31 years, most in 2020 with 92.
  • Santa Rosa Plateau California: days with a maximum temperature at or above 35 C (95 F) in 31 years, most in 2006 with 29.
  • Santa Rosa Plateau California: days with a maximum temperature at or above 90 F (32.2 C) in 31 years, most in 2020 with 64.
  • Santa Rosa Plateau California: nights with a minimum temperature at or above 20 C (68 F) in 31 years, most in 2020 with 48.
  • 10 fixed thresholds have at least one qualifying day at Santa Rosa Plateau California.
31 years with a qualifying day
Days at or above 30 C (86 F) per year at Santa Rosa Plateau California Days per year at Santa Rosa Plateau California with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 92 in 2020. 02550751001994: 641995: 811996: 831997: 781998: 591999: 732000: 682001: 782002: 632004: 752005: 682006: 912007: 642008: 912009: 722010: 402011: 572012: 752013: 652014: 832015: 752017: 832018: 702019: 702020: 922021: 832022: 782023: 532024: 842025: 672026: 8819941998200220072011201520202024
Days per year at Santa Rosa Plateau California with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 92 in 2020.
Days at or above 30 C (86 F) per year at Santa Rosa Plateau California
YearDaysDecade average
19946473
19958173
19968373
19977873
19985973
19997373
20006874.4
20017874.4
20026374.4
20047574.4
20056874.4
20069174.4
20076474.4
20089174.4
20097274.4
20104068.7
20115768.7
20127568.7
20136568.7
20148368.7
20157568.7
20178368.7
20187068.7
20197068.7
20209277.9
20218377.9
20227877.9
20235377.9
20248477.9
20256777.9
20268877.9
First to last qualifying date each year at Santa Rosa Plateau California For each year, a bar from the first to the last day at Santa Rosa Plateau California meeting 30 C (86 F). 1994: 29 May 1994 to 31 October 19941995: 19 February 1995 to 24 November 19951996: 23 April 1996 to 10 November 19961997: 9 March 1997 to 4 November 19971998: 20 April 1998 to 23 October 19981999: 16 April 1999 to 13 November 19992000: 12 April 2000 to 17 October 20002001: 24 April 2001 to 8 November 20012002: 22 February 2002 to 21 November 20022004: 8 March 2004 to 11 December 20042005: 13 May 2005 to 24 December 20052006: 6 January 2006 to 20 November 20062007: 5 February 2007 to 14 November 20072008: 13 April 2008 to 17 November 20082009: 19 April 2009 to 3 November 20092010: 14 June 2010 to 4 November 20102011: 31 March 2011 to 30 October 20112012: 20 April 2012 to 24 November 20122013: 14 March 2013 to 14 November 20132014: 16 March 2014 to 27 November 20142015: 15 March 2015 to 31 October 20152017: 12 March 2017 to 24 November 20172018: 9 April 2018 to 3 November 20182019: 9 June 2019 to 18 November 20192020: 23 April 2020 to 16 November 20202021: 16 January 2021 to 14 November 20212022: 24 March 2022 to 20 October 20222023: 30 June 2023 to 20 October 20232024: 15 June 2024 to 26 October 20242025: 24 March 2025 to 10 November 20252026: 27 February 2026 to 9 October 202619941998200220072011201520202024JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Santa Rosa Plateau California meeting 30 C (86 F).
First to last qualifying date each year at Santa Rosa Plateau California
YearFirst dateLast date
19941994-05-291994-10-31
19951995-02-191995-11-24
19961996-04-231996-11-10
19971997-03-091997-11-04
19981998-04-201998-10-23
19991999-04-161999-11-13
20002000-04-122000-10-17
20012001-04-242001-11-08
20022002-02-222002-11-21
20042004-03-082004-12-11
20052005-05-132005-12-24
20062006-01-062006-11-20
20072007-02-052007-11-14
20082008-04-132008-11-17
20092009-04-192009-11-03
20102010-06-142010-11-04
20112011-03-312011-10-30
20122012-04-202012-11-24
20132013-03-142013-11-14
20142014-03-162014-11-27
20152015-03-152015-10-31
20172017-03-122017-11-24
20182018-04-092018-11-03
20192019-06-092019-11-18
20202020-04-232020-11-16
20212021-01-162021-11-14
20222022-03-242022-10-20
20232023-06-302023-10-20
20242024-06-152024-10-26
20252025-03-242025-11-10
20262026-02-272026-10-09

Every Fixed Threshold

Fixed thresholds at Santa Rosa Plateau California
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3192202088
35 C (95 F): Days3129200625
40 C (104 F): Days12420244
45 C (113 F): Days1120201
90 F (32.2 C): Days3164202056
100 F (37.8 C): Days301219984
110 F (43.3 C): Days3220202
0 C (32 F): Frost days (min9420131
20 C (68 F): Tropical nights (min3148202041
25 C (77 F): Days with min25820174

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1994.

Download the Data

  • Data for Santa Rosa Plateau California 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).