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

Alchichica Threshold Days by Year (MXN00021052)

8 fixed thresholds counted per year at Alchichica (MXN00021052): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Alchichica Thresholds

  • Alchichica: nights with a minimum temperature at or below 0 C (32 F) in 41 years, most in 1970 with 98.
  • Alchichica: days with 10 mm (0.39 in) or more of precipitation in 41 years, most in 1981 with 22.
  • Alchichica: days with 25 mm (0.98 in) or more of precipitation in 36 years, most in 1974 with 5.
  • Alchichica: days with a maximum temperature at or above 30 C (86 F) in 22 years, most in 1998 with 31.
  • 8 fixed thresholds have at least one qualifying day at Alchichica.
22 years with a qualifying day
Days at or above 30 C (86 F) per year at Alchichica Days per year at Alchichica with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 31 in 1998. 0102030401968: 11970: 21971: 21978: 11980: 11982: 11986: 11988: 61989: 21990: 21991: 31994: 31995: 111996: 21998: 311999: 62001: 42005: 42006: 22007: 12008: 32009: 219681978198619901995199920062009
Days per year at Alchichica with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 31 in 1998.
Days at or above 30 C (86 F) per year at Alchichica
YearDaysDecade average
196811
197021.7
197121.7
197811.7
198012.2
198212.2
198612.2
198862.2
198922.2
199028.3
199138.3
199438.3
1995118.3
199628.3
1998318.3
199968.3
200142.7
200542.7
200622.7
200712.7
200832.7
200922.7
First to last qualifying date each year at Alchichica For each year, a bar from the first to the last day at Alchichica meeting 30 C (86 F). 1968: 15 April 1968 to 15 April 19681970: 27 April 1970 to 28 April 19701971: 25 April 1971 to 26 April 19711978: 28 December 1978 to 28 December 19781980: 16 May 1980 to 16 May 19801982: 16 April 1982 to 16 April 19821986: 16 May 1986 to 16 May 19861988: 22 April 1988 to 9 May 19881989: 16 May 1989 to 6 June 19891990: 28 May 1990 to 29 May 19901991: 7 March 1991 to 20 March 19911994: 26 March 1994 to 2 May 19941995: 23 March 1995 to 6 June 19951996: 26 May 1996 to 29 May 19961998: 29 March 1998 to 26 May 19981999: 1 April 1999 to 24 April 19992001: 4 April 2001 to 20 May 20012005: 25 March 2005 to 6 June 20052006: 12 March 2006 to 28 April 20062007: 1 February 2007 to 1 February 20072008: 22 April 2008 to 10 May 20082009: 31 March 2009 to 5 April 200919681978198619901995199920062009JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Alchichica meeting 30 C (86 F).
First to last qualifying date each year at Alchichica
YearFirst dateLast date
19681968-04-151968-04-15
19701970-04-271970-04-28
19711971-04-251971-04-26
19781978-12-281978-12-28
19801980-05-161980-05-16
19821982-04-161982-04-16
19861986-05-161986-05-16
19881988-04-221988-05-09
19891989-05-161989-06-06
19901990-05-281990-05-29
19911991-03-071991-03-20
19941994-03-261994-05-02
19951995-03-231995-06-06
19961996-05-261996-05-29
19981998-03-291998-05-26
19991999-04-011999-04-24
20012001-04-042001-05-20
20052005-03-252005-06-06
20062006-03-122006-04-28
20072007-02-012007-02-01
20082008-04-222008-05-10
20092009-03-312009-04-05

Every Fixed Threshold

Fixed thresholds at Alchichica
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days223119982
90 F (32.2 C): Days2419981
0 C (32 F): Frost days (min4198197063
-10 C (14 F): Days with min9419761
10 mm (0.39 in): Days with 10 mm or more rain4122198111
25 mm (0.98 in): Days with 25 mm or more rain36519742
50 mm (1.97 in): Days with 50 mm or more rain10219781
100 mm (3.94 in): Days with 100 mm or more rain1119691

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1968.

Download the Data

  • Data for Alchichica 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).