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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Lerma Threshold Days by Year (MXN00015049)

8 fixed thresholds counted per year at Lerma (MXN00015049): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Lerma Thresholds

  • Lerma: nights with a minimum temperature at or below 0 C (32 F) in 49 years, most in 1956 with 136.
  • Lerma: days with 10 mm (0.39 in) or more of precipitation in 47 years, most in 2000 with 58.
  • Lerma: days with 25 mm (0.98 in) or more of precipitation in 44 years, most in 2000 with 20.
  • Lerma: days with 50 mm (1.97 in) or more of precipitation in 14 years, most in 2000 with 9.
  • 8 fixed thresholds have at least one qualifying day at Lerma.
6 years with a qualifying day
Days at or above 30 C (86 F) per year at Lerma Days per year at Lerma with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 19 in 1971. 051015201943: 21971: 191972: 191983: 61988: 11999: 13194319711972198319881999
Days per year at Lerma with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 19 in 1971.
Days at or above 30 C (86 F) per year at Lerma
YearDaysDecade average
194322
19711919
19721919
198363.5
198813.5
19991313
First to last qualifying date each year at Lerma For each year, a bar from the first to the last day at Lerma meeting 30 C (86 F). 1943: 15 May 1943 to 16 May 19431971: 22 November 1971 to 31 December 19711972: 1 January 1972 to 30 January 19721983: 1 May 1983 to 21 May 19831988: 26 April 1988 to 26 April 19881999: 9 March 1999 to 1 September 1999194319711972198319881999JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Lerma meeting 30 C (86 F).
First to last qualifying date each year at Lerma
YearFirst dateLast date
19431943-05-151943-05-16
19711971-11-221971-12-31
19721972-01-011972-01-30
19831983-05-011983-05-21
19881988-04-261988-04-26
19991999-03-091999-09-01

Every Fixed Threshold

Fixed thresholds at Lerma
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days619197113
35 C (95 F): Days1119991
90 F (32.2 C): Days2319993
0 C (32 F): Frost days (min49136195639
-10 C (14 F): Days with min2319623
10 mm (0.39 in): Days with 10 mm or more rain4758200058
25 mm (0.98 in): Days with 25 mm or more rain4420200020
50 mm (1.97 in): Days with 50 mm or more rain14920009

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1943.

Download the Data

  • Data for Lerma 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).