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

Atotonilco Threshold Days by Year (MXN00015010)

6 fixed thresholds counted per year at Atotonilco (MXN00015010): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Atotonilco Thresholds

  • Atotonilco: days with 10 mm (0.39 in) or more of precipitation in 44 years, most in 1963 with 42.
  • Atotonilco: nights with a minimum temperature at or below 0 C (32 F) in 43 years, most in 2008 with 141.
  • Atotonilco: days with 25 mm (0.98 in) or more of precipitation in 43 years, most in 2009 with 11.
  • Atotonilco: days with 50 mm (1.97 in) or more of precipitation in 10 years, most in 2006 with 3.
  • 6 fixed thresholds have at least one qualifying day at Atotonilco.
6 years with a qualifying day
Days at or above 30 C (86 F) per year at Atotonilco Days per year at Atotonilco with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 6 in 1966. 02461962: 11963: 11964: 21966: 61967: 31983: 2196219631964196619671983
Days per year at Atotonilco with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 6 in 1966.
Days at or above 30 C (86 F) per year at Atotonilco
YearDaysDecade average
196212.6
196312.6
196422.6
196662.6
196732.6
198322
First to last qualifying date each year at Atotonilco For each year, a bar from the first to the last day at Atotonilco meeting 30 C (86 F). 1962: 22 May 1962 to 22 May 19621963: 23 April 1963 to 23 April 19631964: 28 April 1964 to 2 May 19641966: 4 March 1966 to 18 May 19661967: 24 April 1967 to 11 May 19671983: 2 May 1983 to 3 May 1983196219631964196619671983JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Atotonilco meeting 30 C (86 F).
First to last qualifying date each year at Atotonilco
YearFirst dateLast date
19621962-05-221962-05-22
19631963-04-231963-04-23
19641964-04-281964-05-02
19661966-03-041966-05-18
19671967-04-241967-05-11
19831983-05-021983-05-03

Every Fixed Threshold

Fixed thresholds at Atotonilco
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days6619662
0 C (32 F): Frost days (min43141200899
-10 C (14 F): Days with min3520062
10 mm (0.39 in): Days with 10 mm or more rain4442196323
25 mm (0.98 in): Days with 25 mm or more rain431120096
50 mm (1.97 in): Days with 50 mm or more rain10320061

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1962.

Download the Data

  • Data for Atotonilco 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).