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Data as of 2026-10-16
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Built 2026-10-17 (17 October 2026)

San Luis Threshold Days by Year

3 fixed thresholds counted per year at San Luis (ARM00087436): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for San Luis Thresholds

  • 3 fixed thresholds have at least one qualifying day at San Luis.
14 years with a qualifying day
Nights at or below 0 C (32 F) per year at San Luis Days per year at San Luis with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. 01020301958: 162001: 102007: 242008: 132010: 142011: 172012: 82013: 112014: 32016: 32017: 42018: 72019: 32020: 91958200720102012201420172019
Days per year at San Luis 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 Luis
YearDaysDecade average
19581616
20011015.7
20072415.7
20081315.7
2010147.8
2011177.8
201287.8
2013117.8
201437.8
201637.8
201747.8
201877.8
201937.8
202099
First to last qualifying date each year at San Luis For each year, a bar from the first to the last day at San Luis meeting 0 C (32 F). 1958: 29 May 1958 to 8 September 19582001: 17 June 2001 to 28 July 20012007: 8 May 2007 to 26 August 20072008: 29 May 2008 to 6 September 20082010: 12 July 2010 to 15 August 20102011: 26 June 2011 to 23 September 20112012: 6 June 2012 to 7 July 20122013: 21 July 2013 to 29 September 20132014: 23 May 2014 to 24 July 20142016: 12 June 2016 to 21 August 20162017: 19 June 2017 to 17 July 20172018: 2 June 2018 to 20 August 20182019: 29 June 2019 to 3 September 20192020: 25 June 2020 to 20 August 20201958200720102012201420172019JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at San Luis meeting 0 C (32 F).
First to last qualifying date each year at San Luis
YearFirst dateLast date
19581958-05-291958-09-08
20012001-06-172001-07-28
20072007-05-082007-08-26
20082008-05-292008-09-06
20102010-07-122010-08-15
20112011-06-262011-09-23
20122012-06-062012-07-07
20132013-07-212013-09-29
20142014-05-232014-07-24
20162016-06-122016-08-21
20172017-06-192017-07-17
20182018-06-022018-08-20
20192019-06-292019-09-03
20202020-06-252020-08-20

Every Fixed Threshold

Fixed thresholds at San Luis
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
0 C (32 F): Frost days (min140n/a9
20 C (68 F): Tropical nights (min150n/a43
25 C (77 F): Days with min80n/a3

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1958.

Download the Data

  • Data for San Luis 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-16).