Built 2026-10-19 (19 October 2026)

Chacalapa Threshold Days by Year (MXN00012029)

12 fixed thresholds counted per year at Chacalapa (MXN00012029): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Chacalapa Thresholds

  • Chacalapa: days with 10 mm (0.39 in) or more of precipitation in 41 years, most in 1969 with 47.
  • Chacalapa: days with 25 mm (0.98 in) or more of precipitation in 40 years, most in 1996 with 30.
  • Chacalapa: days with 50 mm (1.97 in) or more of precipitation in 40 years, most in 1989 with 14.
  • Chacalapa: days with a maximum temperature at or above 30 C (86 F) in 24 years, most in 1989 with 365.
  • 12 fixed thresholds have at least one qualifying day at Chacalapa.
24 years with a qualifying day
Days at or above 30 C (86 F) per year at Chacalapa Days per year at Chacalapa with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 365 in 1989. 01002003004001979: 3451980: 3581981: 3101982: 3621983: 3441984: 3351985: 3511986: 3321987: 3331988: 3611989: 3651990: 3601991: 3601992: 3231993: 3531994: 3331995: 3541996: 3551997: 3571998: 3271999: 3532002: 3252003: 3632004: 36319791982198519881991199419972002
Days per year at Chacalapa with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 365 in 1989.
Days at or above 30 C (86 F) per year at Chacalapa
YearDaysDecade average
1979345345
1980358345.1
1981310345.1
1982362345.1
1983344345.1
1984335345.1
1985351345.1
1986332345.1
1987333345.1
1988361345.1
1989365345.1
1990360347.5
1991360347.5
1992323347.5
1993353347.5
1994333347.5
1995354347.5
1996355347.5
1997357347.5
1998327347.5
1999353347.5
2002325350.3
2003363350.3
2004363350.3
First to last qualifying date each year at Chacalapa For each year, a bar from the first to the last day at Chacalapa meeting 30 C (86 F). 1979: 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 30 December 19931994: 1 January 1994 to 31 December 19941995: 1 January 1995 to 30 December 19951996: 2 January 1996 to 31 December 19961997: 1 January 1997 to 31 December 19971998: 1 January 1998 to 31 December 19981999: 1 January 1999 to 31 December 19992002: 1 February 2002 to 31 December 20022003: 1 January 2003 to 31 December 20032004: 1 January 2004 to 31 December 200419791982198519881991199419972002JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Chacalapa meeting 30 C (86 F).
First to last qualifying date each year at Chacalapa
YearFirst dateLast date
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
19931993-01-011993-12-30
19941994-01-011994-12-31
19951995-01-011995-12-30
19961996-01-021996-12-31
19971997-01-011997-12-31
19981998-01-011998-12-31
19991999-01-011999-12-31
20022002-02-012002-12-31
20032003-01-012003-12-31
20042004-01-012004-12-31

Every Fixed Threshold

Fixed thresholds at Chacalapa
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days243651989363
35 C (95 F): Days241941991172
40 C (104 F): Days4420024
90 F (32.2 C): Days243372004337
100 F (37.8 C): Days2343199320
20 C (68 F): Tropical nights (min242711989134
25 C (77 F): Days with min9319831
10 mm (0.39 in): Days with 10 mm or more rain4147196966
25 mm (0.98 in): Days with 25 mm or more rain4030199633
50 mm (1.97 in): Days with 50 mm or more rain4014198914
100 mm (3.94 in): Days with 100 mm or more rain21419734
200 mm (7.87 in): Days with 200 mm or more rain1119731

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1979.

Download the Data

  • Data for Chacalapa 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).