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

Ayutla Threshold Days by Year (MXN00022002)

16 fixed thresholds counted per year at Ayutla (MXN00022002): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ayutla Thresholds

  • Ayutla: days with 10 mm (0.39 in) or more of precipitation in 35 years, most in 1981 with 35.
  • Ayutla: days with a maximum temperature at or above 30 C (86 F) in 34 years, most in 2009 with 349.
  • Ayutla: nights with a minimum temperature at or above 20 C (68 F) in 34 years, most in 1982 with 151.
  • Ayutla: days with 25 mm (0.98 in) or more of precipitation in 34 years, most in 1981 with 21.
  • 16 fixed thresholds have at least one qualifying day at Ayutla.
34 years with a qualifying day
Days at or above 30 C (86 F) per year at Ayutla Days per year at Ayutla with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 349 in 2009. 01002003004001966: 1981967: 2061968: 1761969: 2191970: 2171971: 2331972: 2841973: 2731974: 2711975: 2811976: 2281977: 2771978: 2641979: 2611980: 2681981: 2491982: 2661983: 2581984: 2321985: 2621986: 2571987: 2361988: 2451994: 2221998: 541999: 42000: 1772001: 2382002: 2452003: 2952004: 2182006: 3212008: 3352009: 349196619701974197819821986199820022008
Days per year at Ayutla with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 349 in 2009.
Days at or above 30 C (86 F) per year at Ayutla
YearDaysDecade average
1966198199.8
1967206199.8
1968176199.8
1969219199.8
1970217258.9
1971233258.9
1972284258.9
1973273258.9
1974271258.9
1975281258.9
1976228258.9
1977277258.9
1978264258.9
1979261258.9
1980268252.6
1981249252.6
1982266252.6
1983258252.6
1984232252.6
1985262252.6
1986257252.6
1987236252.6
1988245252.6
199422293.3
19985493.3
1999493.3
2000177272.3
2001238272.3
2002245272.3
2003295272.3
2004218272.3
2006321272.3
2008335272.3
2009349272.3
First to last qualifying date each year at Ayutla For each year, a bar from the first to the last day at Ayutla meeting 30 C (86 F). 1966: 1 January 1966 to 31 December 19661967: 1 January 1967 to 31 December 19671968: 5 January 1968 to 28 December 19681969: 9 January 1969 to 28 December 19691970: 10 January 1970 to 30 December 19701971: 2 January 1971 to 28 December 19711972: 1 January 1972 to 30 December 19721973: 3 January 1973 to 31 December 19731974: 2 January 1974 to 31 December 19741975: 2 January 1975 to 28 December 19751976: 6 January 1976 to 31 December 19761977: 4 January 1977 to 31 December 19771978: 1 January 1978 to 31 December 19781979: 5 January 1979 to 28 December 19791980: 7 January 1980 to 19 December 19801981: 1 January 1981 to 28 December 19811982: 1 January 1982 to 27 December 19821983: 8 January 1983 to 28 December 19831984: 6 January 1984 to 31 December 19841985: 1 January 1985 to 31 December 19851986: 1 January 1986 to 19 December 19861987: 7 January 1987 to 30 December 19871988: 2 January 1988 to 31 December 19881994: 21 January 1994 to 31 December 19941998: 6 January 1998 to 6 October 19981999: 29 April 1999 to 11 December 19992000: 27 January 2000 to 12 November 20002001: 13 January 2001 to 14 December 20012002: 19 January 2002 to 3 December 20022003: 9 January 2003 to 14 December 20032004: 3 January 2004 to 31 October 20042006: 1 January 2006 to 31 December 20062008: 1 January 2008 to 31 December 20082009: 1 January 2009 to 30 December 20091966197119761981198619992004JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Ayutla meeting 30 C (86 F).
First to last qualifying date each year at Ayutla
YearFirst dateLast date
19661966-01-011966-12-31
19671967-01-011967-12-31
19681968-01-051968-12-28
19691969-01-091969-12-28
19701970-01-101970-12-30
19711971-01-021971-12-28
19721972-01-011972-12-30
19731973-01-031973-12-31
19741974-01-021974-12-31
19751975-01-021975-12-28
19761976-01-061976-12-31
19771977-01-041977-12-31
19781978-01-011978-12-31
19791979-01-051979-12-28
19801980-01-071980-12-19
19811981-01-011981-12-28
19821982-01-011982-12-27
19831983-01-081983-12-28
19841984-01-061984-12-31
19851985-01-011985-12-31
19861986-01-011986-12-19
19871987-01-071987-12-30
19881988-01-021988-12-31
19941994-01-211994-12-31
19981998-01-061998-10-06
19991999-04-291999-12-11
20002000-01-272000-11-12
20012001-01-132001-12-14
20022002-01-192002-12-03
20032003-01-092003-12-14
20042004-01-032004-10-31
20062006-01-012006-12-31
20082008-01-012008-12-31
20092009-01-012009-12-30

Every Fixed Threshold

Fixed thresholds at Ayutla
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days343492009349
35 C (95 F): Days333062009306
40 C (104 F): Days332382009238
45 C (113 F): Days181292009129
50 C (122 F): Days2120081
90 F (32.2 C): Days333252009325
100 F (37.8 C): Days332712009271
110 F (43.3 C): Days241622009162
120 F (48.9 C): Days224200924
0 C (32 F): Frost days (min8519732
20 C (68 F): Tropical nights (min341511982121
25 C (77 F): Days with min18719832
10 mm (0.39 in): Days with 10 mm or more rain3535198111
25 mm (0.98 in): Days with 25 mm or more rain342119816
50 mm (1.97 in): Days with 50 mm or more rain29619692
100 mm (3.94 in): Days with 100 mm or more rain12219691

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1966.

Download the Data

  • Data for Ayutla 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).