Built 2026-10-19 (19 October 2026)

Polotitlan Threshold Days by Year (MXN00015069)

8 fixed thresholds counted per year at Polotitlan (MXN00015069): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Polotitlan Thresholds

  • Polotitlan: days with 10 mm (0.39 in) or more of precipitation in 38 years, most in 2008 with 39.
  • Polotitlan: days with 25 mm (0.98 in) or more of precipitation in 38 years, most in 2008 with 12.
  • Polotitlan: nights with a minimum temperature at or below 0 C (32 F) in 37 years, most in 1999 with 32.
  • Polotitlan: days with a maximum temperature at or above 30 C (86 F) in 30 years, most in 1983 with 29.
  • 8 fixed thresholds have at least one qualifying day at Polotitlan.
30 years with a qualifying day
Days at or above 30 C (86 F) per year at Polotitlan Days per year at Polotitlan with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 29 in 1983. 01020301961: 91962: 41963: 11964: 101965: 31966: 31967: 101968: 11970: 161971: 161973: 21978: 11979: 31980: 181981: 151982: 91983: 291984: 111985: 21986: 91987: 21988: 131989: 81990: 71991: 231993: 61995: 81996: 61997: 71998: 51961196419671971197919821985198819911996
Days per year at Polotitlan with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 29 in 1983.
Days at or above 30 C (86 F) per year at Polotitlan
YearDaysDecade average
196195.1
196245.1
196315.1
1964105.1
196535.1
196635.1
1967105.1
196815.1
1970167.6
1971167.6
197327.6
197817.6
197937.6
19801811.6
19811511.6
1982911.6
19832911.6
19841111.6
1985211.6
1986911.6
1987211.6
19881311.6
1989811.6
199078.9
1991238.9
199368.9
199588.9
199668.9
199778.9
199858.9
First to last qualifying date each year at Polotitlan For each year, a bar from the first to the last day at Polotitlan meeting 30 C (86 F). 1961: 14 April 1961 to 19 August 19611962: 22 May 1962 to 30 July 19621963: 23 April 1963 to 23 April 19631964: 27 April 1964 to 9 May 19641965: 22 May 1965 to 14 June 19651966: 22 April 1966 to 18 May 19661967: 21 April 1967 to 14 May 19671968: 21 April 1968 to 21 April 19681970: 1 April 1970 to 30 May 19701971: 21 April 1971 to 23 May 19711973: 22 April 1973 to 26 May 19731978: 8 May 1978 to 8 May 19781979: 4 May 1979 to 18 July 19791980: 16 May 1980 to 25 July 19801981: 30 March 1981 to 11 June 19811982: 2 April 1982 to 5 June 19821983: 19 April 1983 to 11 June 19831984: 23 April 1984 to 7 May 19841985: 13 May 1985 to 14 May 19851986: 4 April 1986 to 16 May 19861987: 19 April 1987 to 27 May 19871988: 22 April 1988 to 21 May 19881989: 15 May 1989 to 9 June 19891990: 1 May 1990 to 31 May 19901991: 7 March 1991 to 2 June 19911993: 2 June 1993 to 7 June 19931995: 22 April 1995 to 6 June 19951996: 22 May 1996 to 29 May 19961997: 7 June 1997 to 17 June 19971998: 6 May 1998 to 12 May 199819611965197019791983198719911997JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Polotitlan meeting 30 C (86 F).
First to last qualifying date each year at Polotitlan
YearFirst dateLast date
19611961-04-141961-08-19
19621962-05-221962-07-30
19631963-04-231963-04-23
19641964-04-271964-05-09
19651965-05-221965-06-14
19661966-04-221966-05-18
19671967-04-211967-05-14
19681968-04-211968-04-21
19701970-04-011970-05-30
19711971-04-211971-05-23
19731973-04-221973-05-26
19781978-05-081978-05-08
19791979-05-041979-07-18
19801980-05-161980-07-25
19811981-03-301981-06-11
19821982-04-021982-06-05
19831983-04-191983-06-11
19841984-04-231984-05-07
19851985-05-131985-05-14
19861986-04-041986-05-16
19871987-04-191987-05-27
19881988-04-221988-05-21
19891989-05-151989-06-09
19901990-05-011990-05-31
19911991-03-071991-06-02
19931993-06-021993-06-07
19951995-04-221995-06-06
19961996-05-221996-05-29
19971997-06-071997-06-17
19981998-05-061998-05-12

Every Fixed Threshold

Fixed thresholds at Polotitlan
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days302919835
35 C (95 F): Days1119801
90 F (32.2 C): Days5419801
0 C (32 F): Frost days (min3732199929
10 mm (0.39 in): Days with 10 mm or more rain3839200839
25 mm (0.98 in): Days with 25 mm or more rain3812200812
50 mm (1.97 in): Days with 50 mm or more rain20219711
100 mm (3.94 in): Days with 100 mm or more rain2119701

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1961.

Download the Data

  • Data for Polotitlan 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).