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Built 2026-10-17 (17 October 2026)

San Jacinto Threshold Days by Year

13 fixed thresholds counted per year at San Jacinto (USC00047813): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for San Jacinto Thresholds

  • San Jacinto: days with 10 mm (0.39 in) or more of precipitation in 43 years, most in 1983 with 19.
  • San Jacinto: days with 25 mm (0.98 in) or more of precipitation in 33 years, most in 1983 with 6.
  • San Jacinto: nights with a minimum temperature at or above 20 C (68 F) in 30 years, most in 2022 with 56.
  • San Jacinto: nights with a minimum temperature at or below 0 C (32 F) in 29 years, most in 1982 with 36.
  • 13 fixed thresholds have at least one qualifying day at San Jacinto.
28 years with a qualifying day
Days at or above 30 C (86 F) per year at San Jacinto Days per year at San Jacinto with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 176 in 2014. 0501001502001982: 921983: 1121984: 1461986: 1421987: 1411991: 1411994: 1271997: 1492000: 1332007: 1642009: 1372010: 1232011: 1292012: 1652013: 1582014: 1762015: 1462016: 1332017: 1492018: 1412019: 1352020: 1612021: 1452022: 1472023: 1192024: 1362025: 1492026: 1451982198619942007201120142017202020232026
Days per year at San Jacinto with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 176 in 2014.
Days at or above 30 C (86 F) per year at San Jacinto
YearDaysDecade average
198292126.6
1983112126.6
1984146126.6
1986142126.6
1987141126.6
1991141139
1994127139
1997149139
2000133144.7
2007164144.7
2009137144.7
2010123145.5
2011129145.5
2012165145.5
2013158145.5
2014176145.5
2015146145.5
2016133145.5
2017149145.5
2018141145.5
2019135145.5
2020161143.1
2021145143.1
2022147143.1
2023119143.1
2024136143.1
2025149143.1
2026145143.1
First to last qualifying date each year at San Jacinto For each year, a bar from the first to the last day at San Jacinto meeting 30 C (86 F). 1982: 19 April 1982 to 24 October 19821983: 18 May 1983 to 4 November 19831984: 19 March 1984 to 5 November 19841986: 24 February 1986 to 11 November 19861987: 7 April 1987 to 27 October 19871991: 15 February 1991 to 12 November 19911994: 4 March 1994 to 1 November 19941997: 9 March 1997 to 4 November 19972000: 18 March 2000 to 21 October 20002007: 4 February 2007 to 18 November 20072009: 18 March 2009 to 4 November 20092010: 26 April 2010 to 5 November 20102011: 31 March 2011 to 31 October 20112012: 4 January 2012 to 24 November 20122013: 12 March 2013 to 17 December 20132014: 12 February 2014 to 27 November 20142015: 13 February 2015 to 20 November 20152016: 15 February 2016 to 14 November 20162017: 9 March 2017 to 25 November 20172018: 30 March 2018 to 3 November 20182019: 8 April 2019 to 19 November 20192020: 22 April 2020 to 16 November 20202021: 15 January 2021 to 1 December 20212022: 1 March 2022 to 20 October 20222023: 10 April 2023 to 5 November 20232024: 11 April 2024 to 27 October 20242025: 26 February 2025 to 11 December 20252026: 26 February 2026 to 5 October 20261982198720002011201520192023JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at San Jacinto meeting 30 C (86 F).
First to last qualifying date each year at San Jacinto
YearFirst dateLast date
19821982-04-191982-10-24
19831983-05-181983-11-04
19841984-03-191984-11-05
19861986-02-241986-11-11
19871987-04-071987-10-27
19911991-02-151991-11-12
19941994-03-041994-11-01
19971997-03-091997-11-04
20002000-03-182000-10-21
20072007-02-042007-11-18
20092009-03-182009-11-04
20102010-04-262010-11-05
20112011-03-312011-10-31
20122012-01-042012-11-24
20132013-03-122013-12-17
20142014-02-122014-11-27
20152015-02-132015-11-20
20162016-02-152016-11-14
20172017-03-092017-11-25
20182018-03-302018-11-03
20192019-04-082019-11-19
20202020-04-222020-11-16
20212021-01-152021-12-01
20222022-03-012022-10-20
20232023-04-102023-11-05
20242024-04-112024-10-27
20252025-02-262025-12-11
20262026-02-262026-10-05

Every Fixed Threshold

Fixed thresholds at San Jacinto
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days281762014145
35 C (95 F): Days2898202076
40 C (104 F): Days2831202420
45 C (113 F): Days6220201
90 F (32.2 C): Days281382020112
100 F (37.8 C): Days2855198441
110 F (43.3 C): Days17319823
0 C (32 F): Frost days (min293619821
20 C (68 F): Tropical nights (min3056202248
25 C (77 F): Days with min14420172
10 mm (0.39 in): Days with 10 mm or more rain431919833
25 mm (0.98 in): Days with 25 mm or more rain33619832
50 mm (1.97 in): Days with 50 mm or more rain10219911

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1982.

Download the Data

  • Data for San Jacinto 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).