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Built 2026-10-19 (19 October 2026)

Tlalchapa Threshold Days by Year (MXN00012090)

12 fixed thresholds counted per year at Tlalchapa (MXN00012090): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Tlalchapa Thresholds

  • Tlalchapa: days with 10 mm (0.39 in) or more of precipitation in 43 years, most in 1992 with 48.
  • Tlalchapa: days with 25 mm (0.98 in) or more of precipitation in 43 years, most in 1985 with 22.
  • Tlalchapa: days with 50 mm (1.97 in) or more of precipitation in 40 years, most in 1980 with 5.
  • Tlalchapa: days with a maximum temperature at or above 30 C (86 F) in 33 years, most in 2000 with 366.
  • 12 fixed thresholds have at least one qualifying day at Tlalchapa.
33 years with a qualifying day
Days at or above 30 C (86 F) per year at Tlalchapa Days per year at Tlalchapa with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 366 in 2000. 01002003004001976: 3331977: 3511978: 3501979: 3541980: 3481981: 3491982: 3611983: 3551984: 3391985: 3481986: 3471987: 3551988: 3531989: 3381990: 3281991: 3351992: 2941993: 3491995: 3561996: 3601998: 3601999: 3622000: 3662001: 3602002: 3522003: 3642004: 3632005: 3612006: 3572007: 3612008: 3652009: 3652010: 330197619801984198819921998200220062010
Days per year at Tlalchapa with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 366 in 2000.
Days at or above 30 C (86 F) per year at Tlalchapa
YearDaysDecade average
1976333347
1977351347
1978350347
1979354347
1980348349.3
1981349349.3
1982361349.3
1983355349.3
1984339349.3
1985348349.3
1986347349.3
1987355349.3
1988353349.3
1989338349.3
1990328343
1991335343
1992294343
1993349343
1995356343
1996360343
1998360343
1999362343
2000366361.4
2001360361.4
2002352361.4
2003364361.4
2004363361.4
2005361361.4
2006357361.4
2007361361.4
2008365361.4
2009365361.4
2010330330
First to last qualifying date each year at Tlalchapa For each year, a bar from the first to the last day at Tlalchapa meeting 30 C (86 F). 1976: 1 January 1976 to 31 December 19761977: 1 January 1977 to 31 December 19771978: 1 January 1978 to 31 December 19781979: 1 January 1979 to 31 December 19791980: 1 January 1980 to 31 December 19801981: 1 January 1981 to 31 December 19811982: 1 January 1982 to 31 December 19821983: 1 January 1983 to 31 December 19831984: 1 January 1984 to 31 December 19841985: 1 January 1985 to 31 December 19851986: 1 January 1986 to 31 December 19861987: 1 January 1987 to 31 December 19871988: 1 January 1988 to 31 December 19881989: 1 January 1989 to 31 December 19891990: 1 January 1990 to 31 December 19901991: 1 January 1991 to 31 December 19911992: 1 January 1992 to 31 December 19921993: 1 January 1993 to 31 December 19931995: 1 January 1995 to 30 December 19951996: 4 January 1996 to 31 December 19961998: 1 January 1998 to 31 December 19981999: 1 January 1999 to 31 December 19992000: 1 January 2000 to 31 December 20002001: 1 January 2001 to 31 December 20012002: 1 January 2002 to 31 December 20022003: 1 January 2003 to 31 December 20032004: 1 January 2004 to 31 December 20042005: 1 January 2005 to 31 December 20052006: 1 January 2006 to 31 December 20062007: 1 January 2007 to 31 December 20072008: 1 January 2008 to 31 December 20082009: 1 January 2009 to 31 December 20092010: 1 January 2010 to 30 November 20101976198119861991199820032008JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Tlalchapa meeting 30 C (86 F).
First to last qualifying date each year at Tlalchapa
YearFirst dateLast date
19761976-01-011976-12-31
19771977-01-011977-12-31
19781978-01-011978-12-31
19791979-01-011979-12-31
19801980-01-011980-12-31
19811981-01-011981-12-31
19821982-01-011982-12-31
19831983-01-011983-12-31
19841984-01-011984-12-31
19851985-01-011985-12-31
19861986-01-011986-12-31
19871987-01-011987-12-31
19881988-01-011988-12-31
19891989-01-011989-12-31
19901990-01-011990-12-31
19911991-01-011991-12-31
19921992-01-011992-12-31
19931993-01-011993-12-31
19951995-01-011995-12-30
19961996-01-041996-12-31
19981998-01-011998-12-31
19991999-01-011999-12-31
20002000-01-012000-12-31
20012001-01-012001-12-31
20022002-01-012002-12-31
20032003-01-012003-12-31
20042004-01-012004-12-31
20052005-01-012005-12-31
20062006-01-012006-12-31
20072007-01-012007-12-31
20082008-01-012008-12-31
20092009-01-012009-12-31
20102010-01-012010-11-30

Every Fixed Threshold

Fixed thresholds at Tlalchapa
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days333662000330
35 C (95 F): Days333012009236
40 C (104 F): Days31130197966
45 C (113 F): Days33819791
90 F (32.2 C): Days333542000299
100 F (37.8 C): Days321822005133
110 F (43.3 C): Days116419791
20 C (68 F): Tropical nights (min332971995213
25 C (77 F): Days with min3178199545
10 mm (0.39 in): Days with 10 mm or more rain4348199230
25 mm (0.98 in): Days with 25 mm or more rain4322198511
50 mm (1.97 in): Days with 50 mm or more rain40519803

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1976.

Download the Data

  • Data for Tlalchapa 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).