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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

San Diego Brown Fld Threshold Days by Year (USW00003178)

12 fixed thresholds counted per year at San Diego Brown Fld (USW00003178): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for San Diego Brown Fld Thresholds

  • San Diego Brown Fld: days with a maximum temperature at or above 30 C (86 F) in 28 years, most in 2020 with 49.
  • San Diego Brown Fld: days with a maximum temperature at or above 90 F (32.2 C) in 28 years, most in 2020 with 29.
  • San Diego Brown Fld: days with 10 mm (0.39 in) or more of precipitation in 26 years, most in 2010 with 15.
  • San Diego Brown Fld: days with a maximum temperature at or above 35 C (95 F) in 25 years, most in 2020 with 15.
  • 12 fixed thresholds have at least one qualifying day at San Diego Brown Fld.
28 years with a qualifying day
Days at or above 30 C (86 F) per year at San Diego Brown Fld Days per year at San Diego Brown Fld with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 49 in 2020. 02040601998: 241999: 182000: 102001: 62002: 122003: 212004: 212005: 292006: 432007: 212008: 372009: 282010: 162011: 112012: 292013: 212014: 442015: 482016: 402017: 292018: 292019: 242020: 492021: 422022: 342023: 202024: 192025: 231998200120042007201020132016201920222025
Days per year at San Diego Brown Fld with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 49 in 2020.
Days at or above 30 C (86 F) per year at San Diego Brown Fld
YearDaysDecade average
19982421
19991821
20001022.8
2001622.8
20021222.8
20032122.8
20042122.8
20052922.8
20064322.8
20072122.8
20083722.8
20092822.8
20101629.1
20111129.1
20122929.1
20132129.1
20144429.1
20154829.1
20164029.1
20172929.1
20182929.1
20192429.1
20204931.2
20214231.2
20223431.2
20232031.2
20241931.2
20252331.2
First to last qualifying date each year at San Diego Brown Fld For each year, a bar from the first to the last day at San Diego Brown Fld meeting 30 C (86 F). 1998: 16 July 1998 to 6 October 19981999: 16 April 1999 to 31 October 19992000: 1 August 2000 to 20 November 20002001: 24 April 2001 to 13 October 20012002: 21 February 2002 to 21 November 20022003: 26 January 2003 to 28 October 20032004: 8 March 2004 to 23 September 20042005: 5 April 2005 to 21 December 20052006: 6 January 2006 to 20 November 20062007: 5 February 2007 to 14 November 20072008: 23 March 2008 to 18 November 20082009: 19 April 2009 to 26 October 20092010: 15 July 2010 to 12 December 20102011: 17 January 2011 to 13 October 20112012: 4 January 2012 to 5 November 20122013: 1 March 2013 to 13 November 20132014: 15 January 2014 to 27 November 20142015: 6 January 2015 to 22 November 20152016: 8 February 2016 to 14 November 20162017: 14 March 2017 to 24 November 20172018: 13 January 2018 to 2 November 20182019: 8 April 2019 to 18 November 20192020: 24 April 2020 to 17 November 20202021: 14 January 2021 to 22 November 20212022: 12 February 2022 to 20 October 20222023: 21 April 2023 to 12 November 20232024: 23 June 2024 to 20 October 20242025: 10 May 2025 to 10 December 20251998200220062010201420182022JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at San Diego Brown Fld meeting 30 C (86 F).
First to last qualifying date each year at San Diego Brown Fld
YearFirst dateLast date
19981998-07-161998-10-06
19991999-04-161999-10-31
20002000-08-012000-11-20
20012001-04-242001-10-13
20022002-02-212002-11-21
20032003-01-262003-10-28
20042004-03-082004-09-23
20052005-04-052005-12-21
20062006-01-062006-11-20
20072007-02-052007-11-14
20082008-03-232008-11-18
20092009-04-192009-10-26
20102010-07-152010-12-12
20112011-01-172011-10-13
20122012-01-042012-11-05
20132013-03-012013-11-13
20142014-01-152014-11-27
20152015-01-062015-11-22
20162016-02-082016-11-14
20172017-03-142017-11-24
20182018-01-132018-11-02
20192019-04-082019-11-18
20202020-04-242020-11-17
20212021-01-142021-11-22
20222022-02-122022-10-20
20232023-04-212023-11-12
20242024-06-232024-10-20
20252025-05-102025-12-10

Every Fixed Threshold

Fixed thresholds at San Diego Brown Fld
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2849202023
35 C (95 F): Days251520202
40 C (104 F): Days5220121
90 F (32.2 C): Days282920207
100 F (37.8 C): Days14420202
110 F (43.3 C): Days1120061
0 C (32 F): Frost days (min10420021
20 C (68 F): Tropical nights (min222820184
25 C (77 F): Days with min2520185
10 mm (0.39 in): Days with 10 mm or more rain261520108
25 mm (0.98 in): Days with 25 mm or more rain21720191
50 mm (1.97 in): Days with 50 mm or more rain4120041

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1998.

Download the Data

  • Data for San Diego Brown Fld 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 (2025-12-31).