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Data as of 2025-12-31
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Built 2026-10-15 (15 October 2026)

San Luis Threshold Days by Year

4 fixed thresholds counted per year at San Luis (COM00080370): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for San Luis Thresholds

  • San Luis: days with 10 mm (0.39 in) or more of precipitation in 5 years, most in 2017 with 27.
  • San Luis: days with 25 mm (0.98 in) or more of precipitation in 5 years, most in 2016 with 5.
  • 4 fixed thresholds have at least one qualifying day at San Luis.
5 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at San Luis Days per year at San Luis with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 27 in 2017. 01020302015: 112016: 162017: 272018: 192019: 2620152016201720182019
Days per year at San Luis with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 27 in 2017.
Days with 10 mm (0.39 in) or more of precipitation per year at San Luis
YearDaysDecade average
20151119.8
20161619.8
20172719.8
20181919.8
20192619.8
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 10 mm (0.39 in). 2015: 8 February 2015 to 25 November 20152016: 3 January 2016 to 21 December 20162017: 6 January 2017 to 29 December 20172018: 15 January 2018 to 3 December 20182019: 8 January 2019 to 31 December 201920152016201720182019JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at San Luis meeting 10 mm (0.39 in).
First to last qualifying date each year at San Luis
YearFirst dateLast date
20152015-02-082015-11-25
20162016-01-032016-12-21
20172017-01-062017-12-29
20182018-01-152018-12-03
20192019-01-082019-12-31

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 (min10n/a1
10 mm (0.39 in): Days with 10 mm or more rain527201726
25 mm (0.98 in): Days with 25 mm or more rain5520165
50 mm (1.97 in): Days with 50 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 2023.

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 2026-10-13 (13 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).