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

La Mesa Intl Threshold Days by Year

11 fixed thresholds counted per year at La Mesa Intl (HOM00078708): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for La Mesa Intl Thresholds

  • 11 fixed thresholds have at least one qualifying day at La Mesa Intl.
11 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at La Mesa Intl Days per year at La Mesa Intl with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. 01020301989: 242007: 182012: 212013: 142014: 192015: 152016: 192017: 222018: 132019: 162025: 17198920122014201620182025
Days per year at La Mesa Intl with 10 mm (0.39 in) or more of precipitation, with the decade average as a line.
Days with 10 mm (0.39 in) or more of precipitation per year at La Mesa Intl
YearDaysDecade average
19892424
20071818
20122117.4
20131417.4
20141917.4
20151517.4
20161917.4
20172217.4
20181317.4
20191617.4
20251717
First to last qualifying date each year at La Mesa Intl For each year, a bar from the first to the last day at La Mesa Intl meeting 10 mm (0.39 in). 1989: 22 January 1989 to 15 December 19892007: 27 January 2007 to 24 November 20072012: 18 May 2012 to 22 December 20122013: 27 March 2013 to 25 December 20132014: 16 January 2014 to 11 December 20142015: 19 January 2015 to 6 December 20152016: 5 February 2016 to 22 December 20162017: 9 January 2017 to 26 October 20172018: 3 January 2018 to 11 December 20182019: 11 January 2019 to 3 November 20192025: 23 January 2025 to 3 August 2025198920122014201620182025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at La Mesa Intl meeting 10 mm (0.39 in).
First to last qualifying date each year at La Mesa Intl
YearFirst dateLast date
19891989-01-221989-12-15
20072007-01-272007-11-24
20122012-05-182012-12-22
20132013-03-272013-12-25
20142014-01-162014-12-11
20152015-01-192015-12-06
20162016-02-052016-12-22
20172017-01-092017-10-26
20182018-01-032018-12-11
20192019-01-112019-11-03
20252025-01-232025-08-03

Every Fixed Threshold

Fixed thresholds at La Mesa Intl
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days10n/a77
35 C (95 F): Days10n/a16
90 F (32.2 C): Days10n/a55
100 F (37.8 C): Days10n/a1
20 C (68 F): Tropical nights (min20n/a79
25 C (77 F): Days with min20n/a3
10 mm (0.39 in): Days with 10 mm or more rain110n/a17
25 mm (0.98 in): Days with 25 mm or more rain110n/a1
50 mm (1.97 in): Days with 50 mm or more rain70n/a1
100 mm (3.94 in): Days with 100 mm or more rain30n/a1
200 mm (7.87 in): Days with 200 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 2025.

Download the Data

  • Data for La Mesa Intl 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).