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Built 2026-10-19 (19 October 2026)

Somsen Ranch Threshold Days by Year (USS0011G01S)

10 fixed thresholds counted per year at Somsen Ranch (USS0011G01S): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Somsen Ranch Thresholds

  • Somsen Ranch: days with 10 mm (0.39 in) or more of precipitation in 45 years, most in 1993 with 34.
  • Somsen Ranch: days with a maximum temperature at or below 0 C (32 F) in 35 years, most in 2020 with 77.
  • Somsen Ranch: nights with a minimum temperature at or below 0 C (32 F) in 34 years, most in 2002 with 240.
  • Somsen Ranch: nights with a minimum temperature at or below -10 C (14 F) in 34 years, most in 2008 with 94.
  • 10 fixed thresholds have at least one qualifying day at Somsen Ranch.
29 years with a qualifying day
Days at or above 30 C (86 F) per year at Somsen Ranch Days per year at Somsen Ranch with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 21 in 2003. 01020301990: 31992: 41994: 51996: 21998: 22000: 112001: 82002: 92003: 212005: 72006: 142007: 202008: 142009: 32010: 12011: 22012: 122013: 82014: 32015: 42016: 92017: 132018: 92019: 82020: 102021: 192024: 102025: 122026: 181990199620012005200820112014201720202025
Days per year at Somsen Ranch with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 21 in 2003.
Days at or above 30 C (86 F) per year at Somsen Ranch
YearDaysDecade average
199033.2
199243.2
199453.2
199623.2
199823.2
20001111.9
2001811.9
2002911.9
20032111.9
2005711.9
20061411.9
20072011.9
20081411.9
2009311.9
201016.9
201126.9
2012126.9
201386.9
201436.9
201546.9
201696.9
2017136.9
201896.9
201986.9
20201013.8
20211913.8
20241013.8
20251213.8
20261813.8
First to last qualifying date each year at Somsen Ranch For each year, a bar from the first to the last day at Somsen Ranch meeting 30 C (86 F). 1990: 7 August 1990 to 9 August 19901992: 1 August 1992 to 13 August 19921994: 22 July 1994 to 7 August 19941996: 27 July 1996 to 11 August 19961998: 17 July 1998 to 18 July 19982000: 13 July 2000 to 15 August 20002001: 30 June 2001 to 26 August 20012002: 25 June 2002 to 15 July 20022003: 10 July 2003 to 15 August 20032005: 12 July 2005 to 7 August 20052006: 14 July 2006 to 23 August 20062007: 4 July 2007 to 30 August 20072008: 20 July 2008 to 30 August 20082009: 23 July 2009 to 22 August 20092010: 26 August 2010 to 26 August 20102011: 25 August 2011 to 26 August 20112012: 10 July 2012 to 28 August 20122013: 28 June 2013 to 17 August 20132014: 14 July 2014 to 28 July 20142015: 28 June 2015 to 25 August 20152016: 20 July 2016 to 31 August 20162017: 5 July 2017 to 4 September 20172018: 6 July 2018 to 11 August 20182019: 22 July 2019 to 5 September 20192020: 31 July 2020 to 5 September 20202021: 13 June 2021 to 9 September 20212024: 10 July 2024 to 6 August 20242025: 1 July 2025 to 23 August 20252026: 11 July 2026 to 21 August 202619901998200320082012201620202026JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Somsen Ranch meeting 30 C (86 F).
First to last qualifying date each year at Somsen Ranch
YearFirst dateLast date
19901990-08-071990-08-09
19921992-08-011992-08-13
19941994-07-221994-08-07
19961996-07-271996-08-11
19981998-07-171998-07-18
20002000-07-132000-08-15
20012001-06-302001-08-26
20022002-06-252002-07-15
20032003-07-102003-08-15
20052005-07-122005-08-07
20062006-07-142006-08-23
20072007-07-042007-08-30
20082008-07-202008-08-30
20092009-07-232009-08-22
20102010-08-262010-08-26
20112011-08-252011-08-26
20122012-07-102012-08-28
20132013-06-282013-08-17
20142014-07-142014-07-28
20152015-06-282015-08-25
20162016-07-202016-08-31
20172017-07-052017-09-04
20182018-07-062018-08-11
20192019-07-222019-09-05
20202020-07-312020-09-05
20212021-06-132021-09-09
20242024-07-102024-08-06
20252025-07-012025-08-23
20262026-07-112026-08-21

Every Fixed Threshold

Fixed thresholds at Somsen Ranch
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2921200318
90 F (32.2 C): Days15720076
0 C (32 F): Ice days (max3577202024
0 C (32 F): Frost days (min342402002140
-10 C (14 F): Days with min3494200832
-20 C (-4 F): Days with min321320137
-30 C (-22 F): Days with min1120131
10 mm (0.39 in): Days with 10 mm or more rain4534199315
25 mm (0.98 in): Days with 25 mm or more rain33420042
50 mm (1.97 in): Days with 50 mm or more rain3120101

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 Somsen Ranch 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).