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Built 2026-10-19 (19 October 2026)

San Regis Threshold Days by Year (MXN00002085)

14 fixed thresholds counted per year at San Regis (MXN00002085): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for San Regis Thresholds

  • San Regis: days with 10 mm (0.39 in) or more of precipitation in 26 years, most in 1992 with 12.
  • San Regis: days with a maximum temperature at or above 30 C (86 F) in 24 years, most in 1989 with 228.
  • San Regis: days with a maximum temperature at or above 35 C (95 F) in 24 years, most in 1989 with 119.
  • San Regis: days with a maximum temperature at or above 90 F (32.2 C) in 24 years, most in 1989 with 157.
  • 14 fixed thresholds have at least one qualifying day at San Regis.
24 years with a qualifying day
Days at or above 30 C (86 F) per year at San Regis Days per year at San Regis with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 228 in 1989. 01002003001973: 1011974: 1251980: 1271981: 1261982: 1221984: 1291985: 1371986: 1641987: 1691988: 1641989: 2281990: 1901991: 1681992: 1751993: 1891994: 1941995: 1931996: 2191997: 1841998: 1502002: 1412003: 912004: 962005: 12519731981198519881991199419972003
Days per year at San Regis with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 228 in 1989.
Days at or above 30 C (86 F) per year at San Regis
YearDaysDecade average
1973101113
1974125113
1980127151.8
1981126151.8
1982122151.8
1984129151.8
1985137151.8
1986164151.8
1987169151.8
1988164151.8
1989228151.8
1990190184.7
1991168184.7
1992175184.7
1993189184.7
1994194184.7
1995193184.7
1996219184.7
1997184184.7
1998150184.7
2002141113.3
200391113.3
200496113.3
2005125113.3
First to last qualifying date each year at San Regis For each year, a bar from the first to the last day at San Regis meeting 30 C (86 F). 1973: 26 June 1973 to 10 December 19731974: 2 June 1974 to 14 November 19741980: 13 January 1980 to 25 December 19801981: 14 February 1981 to 10 December 19811982: 21 February 1982 to 9 November 19821984: 31 January 1984 to 13 November 19841985: 13 February 1985 to 31 December 19851986: 14 February 1986 to 3 December 19861987: 25 January 1987 to 9 December 19871988: 7 February 1988 to 23 November 19881989: 2 January 1989 to 25 December 19891990: 2 January 1990 to 30 December 19901991: 4 January 1991 to 15 December 19911992: 24 January 1992 to 2 December 19921993: 24 January 1993 to 25 December 19931994: 2 January 1994 to 30 November 19941995: 8 January 1995 to 27 December 19951996: 8 January 1996 to 30 December 19961997: 1 January 1997 to 25 November 19971998: 17 January 1998 to 3 December 19982002: 15 April 2002 to 26 November 20022003: 24 June 2003 to 27 October 20032004: 11 March 2004 to 23 October 20042005: 22 April 2005 to 24 November 200519731981198519881991199419972003JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at San Regis meeting 30 C (86 F).
First to last qualifying date each year at San Regis
YearFirst dateLast date
19731973-06-261973-12-10
19741974-06-021974-11-14
19801980-01-131980-12-25
19811981-02-141981-12-10
19821982-02-211982-11-09
19841984-01-311984-11-13
19851985-02-131985-12-31
19861986-02-141986-12-03
19871987-01-251987-12-09
19881988-02-071988-11-23
19891989-01-021989-12-25
19901990-01-021990-12-30
19911991-01-041991-12-15
19921992-01-241992-12-02
19931993-01-241993-12-25
19941994-01-021994-11-30
19951995-01-081995-12-27
19961996-01-081996-12-30
19971997-01-011997-11-25
19981998-01-171998-12-03
20022002-04-152002-11-26
20032003-06-242003-10-27
20042004-03-112004-10-23
20052005-04-222005-11-24

Every Fixed Threshold

Fixed thresholds at San Regis
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days242281989125
35 C (95 F): Days24119198936
40 C (104 F): Days192519965
45 C (113 F): Days8219851
90 F (32.2 C): Days24157198977
100 F (37.8 C): Days225919953
110 F (43.3 C): Days10219851
120 F (48.9 C): Days1119951
0 C (32 F): Frost days (min9719904
20 C (68 F): Tropical nights (min2470198939
25 C (77 F): Days with min141319881
10 mm (0.39 in): Days with 10 mm or more rain261219924
25 mm (0.98 in): Days with 25 mm or more rain14519922
50 mm (1.97 in): Days with 50 mm or more rain3119821

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1973.

Download the Data

  • Data for San Regis 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).