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Built 2026-10-19 (19 October 2026)

Zapotitlan Salinas (Smn) Threshold Days by Year (MXN00021109)

10 fixed thresholds counted per year at Zapotitlan Salinas (Smn) (MXN00021109): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Zapotitlan Salinas (Smn) Thresholds

  • Zapotitlan Salinas (Smn): days with 10 mm (0.39 in) or more of precipitation in 43 years, most in 1944 with 21.
  • Zapotitlan Salinas (Smn): days with 25 mm (0.98 in) or more of precipitation in 41 years, most in 1944 with 8.
  • Zapotitlan Salinas (Smn): days with a maximum temperature at or above 30 C (86 F) in 31 years, most in 2005 with 324.
  • Zapotitlan Salinas (Smn): days with a maximum temperature at or above 35 C (95 F) in 31 years, most in 2007 with 160.
  • 10 fixed thresholds have at least one qualifying day at Zapotitlan Salinas (Smn).
31 years with a qualifying day
Days at or above 30 C (86 F) per year at Zapotitlan Salinas (Smn) Days per year at Zapotitlan Salinas (Smn) with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 324 in 2005. 01002003004001956: 1561957: 2271958: 1751959: 1691960: 1871961: 1981962: 2191963: 2111964: 2141965: 2111966: 1961967: 1901968: 1831969: 2131970: 1971971: 1941989: 2241992: 1851993: 1631994: 1871995: 1591997: 1601999: 972000: 812001: 1182002: 2682004: 2632005: 3242007: 2762008: 2892009: 30719561960196419681989199520012007
Days per year at Zapotitlan Salinas (Smn) with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 324 in 2005.
Days at or above 30 C (86 F) per year at Zapotitlan Salinas (Smn)
YearDaysDecade average
1956156181.8
1957227181.8
1958175181.8
1959169181.8
1960187202.2
1961198202.2
1962219202.2
1963211202.2
1964214202.2
1965211202.2
1966196202.2
1967190202.2
1968183202.2
1969213202.2
1970197195.5
1971194195.5
1989224224
1992185158.5
1993163158.5
1994187158.5
1995159158.5
1997160158.5
199997158.5
200081240.8
2001118240.8
2002268240.8
2004263240.8
2005324240.8
2007276240.8
2008289240.8
2009307240.8
First to last qualifying date each year at Zapotitlan Salinas (Smn) For each year, a bar from the first to the last day at Zapotitlan Salinas (Smn) meeting 30 C (86 F). 1956: 24 January 1956 to 23 December 19561957: 9 January 1957 to 19 December 19571958: 31 January 1958 to 23 December 19581959: 15 January 1959 to 27 December 19591960: 1 January 1960 to 15 December 19601961: 14 January 1961 to 16 December 19611962: 8 January 1962 to 21 December 19621963: 10 January 1963 to 22 December 19631964: 19 January 1964 to 17 December 19641965: 30 January 1965 to 24 December 19651966: 16 January 1966 to 28 December 19661967: 1 January 1967 to 22 December 19671968: 31 January 1968 to 30 December 19681969: 9 January 1969 to 30 December 19691970: 12 January 1970 to 30 December 19701971: 4 January 1971 to 16 December 19711989: 1 January 1989 to 31 December 19891992: 6 January 1992 to 20 December 19921993: 4 January 1993 to 24 December 19931994: 2 January 1994 to 31 December 19941995: 3 January 1995 to 16 December 19951997: 3 January 1997 to 26 December 19971999: 3 February 1999 to 26 September 19992000: 27 January 2000 to 24 November 20002001: 17 January 2001 to 13 December 20012002: 19 February 2002 to 30 December 20022004: 4 January 2004 to 26 December 20042005: 2 January 2005 to 26 December 20052007: 1 January 2007 to 26 November 20072008: 7 January 2008 to 28 December 20082009: 1 January 2009 to 31 December 200919561960196419681989199520012007JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Zapotitlan Salinas (Smn) meeting 30 C (86 F).
First to last qualifying date each year at Zapotitlan Salinas (Smn)
YearFirst dateLast date
19561956-01-241956-12-23
19571957-01-091957-12-19
19581958-01-311958-12-23
19591959-01-151959-12-27
19601960-01-011960-12-15
19611961-01-141961-12-16
19621962-01-081962-12-21
19631963-01-101963-12-22
19641964-01-191964-12-17
19651965-01-301965-12-24
19661966-01-161966-12-28
19671967-01-011967-12-22
19681968-01-311968-12-30
19691969-01-091969-12-30
19701970-01-121970-12-30
19711971-01-041971-12-16
19891989-01-011989-12-31
19921992-01-061992-12-20
19931993-01-041993-12-24
19941994-01-021994-12-31
19951995-01-031995-12-16
19971997-01-031997-12-26
19991999-02-031999-09-26
20002000-01-272000-11-24
20012001-01-172001-12-13
20022002-02-192002-12-30
20042004-01-042004-12-26
20052005-01-022005-12-26
20072007-01-012007-11-26
20082008-01-072008-12-28
20092009-01-012009-12-31

Every Fixed Threshold

Fixed thresholds at Zapotitlan Salinas (Smn)
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days313242005307
35 C (95 F): Days311602007157
40 C (104 F): Days638200938
90 F (32.2 C): Days312082007205
100 F (37.8 C): Days1870200970
0 C (32 F): Frost days (min7219561
20 C (68 F): Tropical nights (min19419651
10 mm (0.39 in): Days with 10 mm or more rain4321194414
25 mm (0.98 in): Days with 25 mm or more rain41819443
50 mm (1.97 in): Days with 50 mm or more rain11219541

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1956.

Download the Data

  • Data for Zapotitlan Salinas (Smn) 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).