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Built 2026-10-19 (19 October 2026)

Zihualtepec Threshold Days by Year (MXN00020017)

13 fixed thresholds counted per year at Zihualtepec (MXN00020017): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Zihualtepec Thresholds

  • Zihualtepec: days with 10 mm (0.39 in) or more of precipitation in 41 years, most in 1968 with 77.
  • Zihualtepec: days with 25 mm (0.98 in) or more of precipitation in 41 years, most in 1981 with 38.
  • Zihualtepec: days with 50 mm (1.97 in) or more of precipitation in 41 years, most in 2010 with 22.
  • Zihualtepec: days with a maximum temperature at or above 30 C (86 F) in 39 years, most in 1972 with 307.
  • 13 fixed thresholds have at least one qualifying day at Zihualtepec.
39 years with a qualifying day
Days at or above 30 C (86 F) per year at Zihualtepec Days per year at Zihualtepec with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 307 in 1972. 01002003004001959: 2501961: 1461962: 2051963: 2051964: 2311965: 2061966: 1931967: 2141968: 2171969: 2311970: 2321971: 2591972: 3071973: 2681974: 2731975: 2551976: 2391977: 2541978: 2301979: 2461980: 2311981: 2481982: 2461983: 2501984: 1771992: 171993: 291995: 271996: 421997: 402000: 1152001: 1032002: 1782003: 732004: 652005: 1002006: 922007: 2702010: 1481959196419681972197619801984199620022006
Days per year at Zihualtepec with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 307 in 1972.
Days at or above 30 C (86 F) per year at Zihualtepec
YearDaysDecade average
1959250250
1961146205.3
1962205205.3
1963205205.3
1964231205.3
1965206205.3
1966193205.3
1967214205.3
1968217205.3
1969231205.3
1970232256.3
1971259256.3
1972307256.3
1973268256.3
1974273256.3
1975255256.3
1976239256.3
1977254256.3
1978230256.3
1979246256.3
1980231230.4
1981248230.4
1982246230.4
1983250230.4
1984177230.4
19921731
19932931
19952731
19964231
19974031
2000115124.5
2001103124.5
2002178124.5
200373124.5
200465124.5
2005100124.5
200692124.5
2007270124.5
2010148148
First to last qualifying date each year at Zihualtepec For each year, a bar from the first to the last day at Zihualtepec meeting 30 C (86 F). 1959: 3 January 1959 to 31 December 19591961: 19 January 1961 to 23 September 19611962: 22 February 1962 to 25 December 19621963: 1 January 1963 to 13 December 19631964: 8 January 1964 to 24 December 19641965: 26 January 1965 to 23 November 19651966: 8 February 1966 to 28 December 19661967: 1 January 1967 to 29 December 19671968: 10 January 1968 to 29 December 19681969: 9 January 1969 to 28 December 19691970: 6 January 1970 to 24 December 19701971: 3 January 1971 to 31 December 19711972: 1 January 1972 to 30 December 19721973: 1 January 1973 to 30 December 19731974: 4 January 1974 to 30 December 19741975: 8 January 1975 to 31 December 19751976: 1 January 1976 to 27 December 19761977: 9 January 1977 to 30 December 19771978: 1 January 1978 to 8 December 19781979: 12 January 1979 to 27 December 19791980: 9 January 1980 to 23 December 19801981: 26 January 1981 to 30 December 19811982: 2 January 1982 to 31 December 19821983: 19 January 1983 to 28 December 19831984: 4 January 1984 to 16 December 19841992: 22 January 1992 to 17 December 19921993: 21 February 1993 to 20 October 19931995: 17 January 1995 to 14 November 19951996: 1 February 1996 to 30 October 19961997: 12 March 1997 to 24 October 19972000: 12 February 2000 to 13 November 20002001: 17 January 2001 to 31 December 20012002: 23 January 2002 to 15 November 20022003: 5 February 2003 to 17 November 20032004: 4 January 2004 to 8 December 20042005: 15 February 2005 to 4 December 20052006: 2 February 2006 to 31 December 20062007: 7 January 2007 to 30 December 20072010: 20 January 2010 to 31 December 201019591965197019751980199220002005JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Zihualtepec meeting 30 C (86 F).
First to last qualifying date each year at Zihualtepec
YearFirst dateLast date
19591959-01-031959-12-31
19611961-01-191961-09-23
19621962-02-221962-12-25
19631963-01-011963-12-13
19641964-01-081964-12-24
19651965-01-261965-11-23
19661966-02-081966-12-28
19671967-01-011967-12-29
19681968-01-101968-12-29
19691969-01-091969-12-28
19701970-01-061970-12-24
19711971-01-031971-12-31
19721972-01-011972-12-30
19731973-01-011973-12-30
19741974-01-041974-12-30
19751975-01-081975-12-31
19761976-01-011976-12-27
19771977-01-091977-12-30
19781978-01-011978-12-08
19791979-01-121979-12-27
19801980-01-091980-12-23
19811981-01-261981-12-30
19821982-01-021982-12-31
19831983-01-191983-12-28
19841984-01-041984-12-16
19921992-01-221992-12-17
19931993-02-211993-10-20
19951995-01-171995-11-14
19961996-02-011996-10-30
19971997-03-121997-10-24
20002000-02-122000-11-13
20012001-01-172001-12-31
20022002-01-232002-11-15
20032003-02-052003-11-17
20042004-01-042004-12-08
20052005-02-152005-12-04
20062006-02-022006-12-31
20072007-01-072007-12-30
20102010-01-202010-12-31

Every Fixed Threshold

Fixed thresholds at Zihualtepec
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days393071972148
35 C (95 F): Days37137200734
40 C (104 F): Days2319196714
90 F (32.2 C): Days38200200766
100 F (37.8 C): Days3455200711
110 F (43.3 C): Days1119671
20 C (68 F): Tropical nights (min38277195996
25 C (77 F): Days with min255419593
10 mm (0.39 in): Days with 10 mm or more rain4177196859
25 mm (0.98 in): Days with 25 mm or more rain4138198131
50 mm (1.97 in): Days with 50 mm or more rain4122201022
100 mm (3.94 in): Days with 100 mm or more rain32620106
200 mm (7.87 in): Days with 200 mm or more rain1220102

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1959.

Download the Data

  • Data for Zihualtepec 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).