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

Alamo Threshold Days by Year (MXN00030006)

15 fixed thresholds counted per year at Alamo (MXN00030006): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Alamo Thresholds

  • Alamo: days with 10 mm (0.39 in) or more of precipitation in 46 years, most in 1969 with 48.
  • Alamo: days with 25 mm (0.98 in) or more of precipitation in 46 years, most in 2010 with 22.
  • Alamo: days with 50 mm (1.97 in) or more of precipitation in 41 years, most in 1966 with 11.
  • Alamo: days with a maximum temperature at or above 30 C (86 F) in 28 years, most in 1993 with 356.
  • 15 fixed thresholds have at least one qualifying day at Alamo.
28 years with a qualifying day
Days at or above 30 C (86 F) per year at Alamo Days per year at Alamo with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 356 in 1993. 01002003004001979: 2331980: 2461981: 2431982: 2341983: 2021984: 2001985: 2401986: 2251987: 1221989: 2911990: 3091991: 3391992: 3501993: 3561994: 3451995: 3191996: 2721997: 2671998: 2851999: 2492000: 2482001: 2232006: 2152007: 1952008: 1812009: 2122010: 1642011: 2351979198219851989199219951998200120082011
Days per year at Alamo with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 356 in 1993.
Days at or above 30 C (86 F) per year at Alamo
YearDaysDecade average
1979233233
1980246222.6
1981243222.6
1982234222.6
1983202222.6
1984200222.6
1985240222.6
1986225222.6
1987122222.6
1989291222.6
1990309309.1
1991339309.1
1992350309.1
1993356309.1
1994345309.1
1995319309.1
1996272309.1
1997267309.1
1998285309.1
1999249309.1
2000248212.3
2001223212.3
2006215212.3
2007195212.3
2008181212.3
2009212212.3
2010164199.5
2011235199.5
First to last qualifying date each year at Alamo For each year, a bar from the first to the last day at Alamo meeting 30 C (86 F). 1979: 13 January 1979 to 23 December 19791980: 11 January 1980 to 27 December 19801981: 28 January 1981 to 31 December 19811982: 1 January 1982 to 2 December 19821983: 29 January 1983 to 28 December 19831984: 9 January 1984 to 31 December 19841985: 30 January 1985 to 31 December 19851986: 4 February 1986 to 9 November 19861987: 2 May 1987 to 3 November 19871989: 1 January 1989 to 18 December 19891990: 3 January 1990 to 30 December 19901991: 1 January 1991 to 31 December 19911992: 1 January 1992 to 31 December 19921993: 1 January 1993 to 31 December 19931994: 1 January 1994 to 30 December 19941995: 1 January 1995 to 18 December 19951996: 16 January 1996 to 25 December 19961997: 2 January 1997 to 14 December 19971998: 4 January 1998 to 31 December 19981999: 8 January 1999 to 31 December 19992000: 1 January 2000 to 29 November 20002001: 15 February 2001 to 16 December 20012006: 6 March 2006 to 30 November 20062007: 24 February 2007 to 15 December 20072008: 8 January 2008 to 28 December 20082009: 4 January 2009 to 9 December 20092010: 21 January 2010 to 31 December 20102011: 6 January 2011 to 30 November 20111979198319871992199620002008JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Alamo meeting 30 C (86 F).
First to last qualifying date each year at Alamo
YearFirst dateLast date
19791979-01-131979-12-23
19801980-01-111980-12-27
19811981-01-281981-12-31
19821982-01-011982-12-02
19831983-01-291983-12-28
19841984-01-091984-12-31
19851985-01-301985-12-31
19861986-02-041986-11-09
19871987-05-021987-11-03
19891989-01-011989-12-18
19901990-01-031990-12-30
19911991-01-011991-12-31
19921992-01-011992-12-31
19931993-01-011993-12-31
19941994-01-011994-12-30
19951995-01-011995-12-18
19961996-01-161996-12-25
19971997-01-021997-12-14
19981998-01-041998-12-31
19991999-01-081999-12-31
20002000-01-012000-11-29
20012001-02-152001-12-16
20062006-03-062006-11-30
20072007-02-242007-12-15
20082008-01-082008-12-28
20092009-01-042009-12-09
20102010-01-212010-12-31
20112011-01-062011-11-30

Every Fixed Threshold

Fixed thresholds at Alamo
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days283561993235
35 C (95 F): Days28145198073
40 C (104 F): Days151919803
45 C (113 F): Days4219981
90 F (32.2 C): Days282741994158
100 F (37.8 C): Days2570198014
110 F (43.3 C): Days5319901
0 C (32 F): Frost days (min2119831
20 C (68 F): Tropical nights (min283311994206
25 C (77 F): Days with min2545199822
10 mm (0.39 in): Days with 10 mm or more rain4648196920
25 mm (0.98 in): Days with 25 mm or more rain462220109
50 mm (1.97 in): Days with 50 mm or more rain411119663
100 mm (3.94 in): Days with 100 mm or more rain20619662
200 mm (7.87 in): Days with 200 mm or more rain1119811

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1979.

Download the Data

  • Data for Alamo 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).