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Data as of 2026-10-15
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Built 2026-10-17 (17 October 2026)

San Rafael Threshold Days by Year

7 fixed thresholds counted per year at San Rafael (ARM00087509): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for San Rafael Thresholds

  • 7 fixed thresholds have at least one qualifying day at San Rafael.
21 years with a qualifying day
Nights at or below 0 C (32 F) per year at San Rafael Days per year at San Rafael with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. 02040601999: 372001: 252004: 272005: 392006: 222007: 552008: 322009: 432010: 372011: 562012: 382014: 342015: 292016: 262017: 222018: 522020: 392021: 322022: 422023: 202024: 341999200520082011201520182022
Days per year at San Rafael with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line.
Nights at or below 0 C (32 F) per year at San Rafael
YearDaysDecade average
19993737
20012534.7
20042734.7
20053934.7
20062234.7
20075534.7
20083234.7
20094334.7
20103736.8
20115636.8
20123836.8
20143436.8
20152936.8
20162636.8
20172236.8
20185236.8
20203933.4
20213233.4
20224233.4
20232033.4
20243433.4
First to last qualifying date each year at San Rafael For each year, a bar from the first to the last day at San Rafael meeting 0 C (32 F). 1999: 16 April 1999 to 3 October 19992001: 1 May 2001 to 16 September 20012004: 14 May 2004 to 5 November 20042005: 26 April 2005 to 30 September 20052006: 20 May 2006 to 5 September 20062007: 8 May 2007 to 24 September 20072008: 14 April 2008 to 12 September 20082009: 12 June 2009 to 30 September 20092010: 23 April 2010 to 30 August 20102011: 2 May 2011 to 23 September 20112012: 5 June 2012 to 27 August 20122014: 23 May 2014 to 26 August 20142015: 3 May 2015 to 11 September 20152016: 27 April 2016 to 24 September 20162017: 27 May 2017 to 15 September 20172018: 1 June 2018 to 2 September 20182020: 23 May 2020 to 5 October 20202021: 19 June 2021 to 3 October 20212022: 28 April 2022 to 9 September 20222023: 11 June 2023 to 13 August 20232024: 16 May 2024 to 25 August 20241999200520082011201520182022JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at San Rafael meeting 0 C (32 F).
First to last qualifying date each year at San Rafael
YearFirst dateLast date
19991999-04-161999-10-03
20012001-05-012001-09-16
20042004-05-142004-11-05
20052005-04-262005-09-30
20062006-05-202006-09-05
20072007-05-082007-09-24
20082008-04-142008-09-12
20092009-06-122009-09-30
20102010-04-232010-08-30
20112011-05-022011-09-23
20122012-06-052012-08-27
20142014-05-232014-08-26
20152015-05-032015-09-11
20162016-04-272016-09-24
20172017-05-272017-09-15
20182018-06-012018-09-02
20202020-05-232020-10-05
20212021-06-192021-10-03
20222022-04-282022-09-09
20232023-06-112023-08-13
20242024-05-162024-08-25

Every Fixed Threshold

Fixed thresholds at San Rafael
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
0 C (32 F): Frost days (min210n/a34
20 C (68 F): Tropical nights (min210n/a11
25 C (77 F): Days with min10n/a1
10 mm (0.39 in): Days with 10 mm or more rain30n/a7
25 mm (0.98 in): Days with 25 mm or more rain30n/a1
50 mm (1.97 in): Days with 50 mm or more rain10n/a1
100 mm (3.94 in): Days with 100 mm or more rain10n/a1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1999.

Download the Data

  • Data for San Rafael 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).