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Built 2026-10-19 (19 October 2026)

San Francisco Nadadores Threshold Days by Year (MXN00005164)

16 fixed thresholds counted per year at San Francisco Nadadores (MXN00005164): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for San Francisco Nadadores Thresholds

  • San Francisco Nadadores: days with 10 mm (0.39 in) or more of precipitation in 23 years, most in 1991 with 18.
  • San Francisco Nadadores: days with 25 mm (0.98 in) or more of precipitation in 23 years, most in 1997 with 8.
  • San Francisco Nadadores: days with a maximum temperature at or above 30 C (86 F) in 21 years, most in 2009 with 241.
  • San Francisco Nadadores: days with a maximum temperature at or above 35 C (95 F) in 21 years, most in 2006 with 162.
  • 16 fixed thresholds have at least one qualifying day at San Francisco Nadadores.
21 years with a qualifying day
Days at or above 30 C (86 F) per year at San Francisco Nadadores Days per year at San Francisco Nadadores with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 241 in 2009. 01002003001982: 2321983: 1811984: 2201985: 1811986: 1901988: 1881990: 1791991: 1841992: 1821993: 1971995: 2221996: 2101997: 1911998: 1862000: 1922006: 2402007: 1942008: 2352009: 2412010: 2092011: 1791982198519901993199720062009
Days per year at San Francisco Nadadores with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 241 in 2009.
Days at or above 30 C (86 F) per year at San Francisco Nadadores
YearDaysDecade average
1982232198.7
1983181198.7
1984220198.7
1985181198.7
1986190198.7
1988188198.7
1990179193.9
1991184193.9
1992182193.9
1993197193.9
1995222193.9
1996210193.9
1997191193.9
1998186193.9
2000192220.4
2006240220.4
2007194220.4
2008235220.4
2009241220.4
2010209194
2011179194
First to last qualifying date each year at San Francisco Nadadores For each year, a bar from the first to the last day at San Francisco Nadadores meeting 30 C (86 F). 1982: 8 February 1982 to 24 December 19821983: 1 March 1983 to 11 December 19831984: 14 February 1984 to 21 December 19841985: 3 March 1985 to 25 November 19851986: 7 February 1986 to 19 November 19861988: 17 January 1988 to 23 December 19881990: 16 January 1990 to 21 December 19901991: 29 January 1991 to 29 November 19911992: 2 March 1992 to 11 November 19921993: 23 January 1993 to 10 December 19931995: 11 January 1995 to 17 December 19951996: 17 January 1996 to 30 December 19961997: 23 January 1997 to 26 November 19971998: 22 February 1998 to 7 December 19982000: 1 January 2000 to 16 October 20002006: 2 January 2006 to 16 December 20062007: 2 February 2007 to 22 December 20072008: 6 January 2008 to 19 December 20082009: 3 January 2009 to 18 December 20092010: 18 January 2010 to 22 November 20102011: 10 April 2011 to 23 November 20111982198519901993199720062009JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at San Francisco Nadadores meeting 30 C (86 F).
First to last qualifying date each year at San Francisco Nadadores
YearFirst dateLast date
19821982-02-081982-12-24
19831983-03-011983-12-11
19841984-02-141984-12-21
19851985-03-031985-11-25
19861986-02-071986-11-19
19881988-01-171988-12-23
19901990-01-161990-12-21
19911991-01-291991-11-29
19921992-03-021992-11-11
19931993-01-231993-12-10
19951995-01-111995-12-17
19961996-01-171996-12-30
19971997-01-231997-11-26
19981998-02-221998-12-07
20002000-01-012000-10-16
20062006-01-022006-12-16
20072007-02-022007-12-22
20082008-01-062008-12-19
20092009-01-032009-12-18
20102010-01-182010-11-22
20112011-04-102011-11-23

Every Fixed Threshold

Fixed thresholds at San Francisco Nadadores
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days212412009179
35 C (95 F): Days21162200691
40 C (104 F): Days2088200938
45 C (113 F): Days84020082
90 F (32.2 C): Days211862006130
100 F (37.8 C): Days21108200651
110 F (43.3 C): Days115320082
120 F (48.9 C): Days2119981
0 C (32 F): Ice days (max4119831
0 C (32 F): Frost days (min215019888
20 C (68 F): Tropical nights (min21110199598
25 C (77 F): Days with min1314200813
10 mm (0.39 in): Days with 10 mm or more rain2318199110
25 mm (0.98 in): Days with 25 mm or more rain23819972
50 mm (1.97 in): Days with 50 mm or more rain8119881
100 mm (3.94 in): Days with 100 mm or more rain10n/a3

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 Francisco Nadadores 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).