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Built 2026-10-15 (15 October 2026)

San Antonio Intl AP Threshold Days by Year

18 fixed thresholds counted per year at San Antonio Intl AP (USW00012921): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for San Antonio Intl AP Thresholds

  • San Antonio Intl AP: days with a maximum temperature at or above 30 C (86 F) in 80 years, most in 2025 with 204.
  • San Antonio Intl AP: days with a maximum temperature at or above 35 C (95 F) in 80 years, most in 2011 with 119.
  • San Antonio Intl AP: days with a maximum temperature at or above 90 F (32.2 C) in 80 years, most in 2025 with 162.
  • San Antonio Intl AP: nights with a minimum temperature at or below 0 C (32 F) in 80 years, most in 1966 with 43.
  • 18 fixed thresholds have at least one qualifying day at San Antonio Intl AP.
80 years with a qualifying day
Days at or above 30 C (86 F) per year at San Antonio Intl AP Days per year at San Antonio Intl AP with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 204 in 2025. 01002003001947: 1791948: 1731949: 1491950: 1631951: 1551952: 1401953: 1601954: 1721955: 1831956: 1781957: 1211958: 1351959: 1471960: 1501961: 1561962: 1711963: 1831964: 1441965: 1361966: 1311967: 1541968: 1251969: 1421970: 1431971: 1731972: 1661973: 1361974: 1291975: 1231976: 1081977: 1271978: 1411979: 1371980: 1751981: 1471982: 1461983: 1311984: 1561985: 1301986: 1471987: 1511988: 1821989: 1751990: 1491991: 1661992: 1501993: 1601994: 1641995: 1641996: 1761997: 1401998: 1501999: 1652000: 1592001: 1272002: 1532003: 1432004: 1512005: 1662006: 1872007: 1392008: 1722009: 1662010: 1432011: 1792012: 1662013: 1632014: 1802015: 1612016: 1492017: 1632018: 1512019: 1612020: 1812021: 1562022: 1932023: 1642024: 1912025: 2042026: 1781947195519631971197919871995200320112019
Days per year at San Antonio Intl AP with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 204 in 2025.
Days at or above 30 C (86 F) per year at San Antonio Intl AP
YearDaysDecade average
1947179167
1948173167
1949149167
1950163155.4
1951155155.4
1952140155.4
1953160155.4
1954172155.4
1955183155.4
1956178155.4
1957121155.4
1958135155.4
1959147155.4
1960150149.2
1961156149.2
1962171149.2
1963183149.2
1964144149.2
1965136149.2
1966131149.2
1967154149.2
1968125149.2
1969142149.2
1970143138.3
1971173138.3
1972166138.3
1973136138.3
1974129138.3
1975123138.3
1976108138.3
1977127138.3
1978141138.3
1979137138.3
1980175154
1981147154
1982146154
1983131154
1984156154
1985130154
1986147154
1987151154
1988182154
1989175154
1990149158.4
1991166158.4
1992150158.4
1993160158.4
1994164158.4
1995164158.4
1996176158.4
1997140158.4
1998150158.4
1999165158.4
2000159156.3
2001127156.3
2002153156.3
2003143156.3
2004151156.3
2005166156.3
2006187156.3
2007139156.3
2008172156.3
2009166156.3
2010143161.6
2011179161.6
2012166161.6
2013163161.6
2014180161.6
2015161161.6
2016149161.6
2017163161.6
2018151161.6
2019161161.6
2020181181
2021156181
2022193181
2023164181
2024191181
2025204181
2026178181
First to last qualifying date each year at San Antonio Intl AP For each year, a bar from the first to the last day at San Antonio Intl AP meeting 30 C (86 F). 1947: 27 March 1947 to 10 November 19471948: 23 March 1948 to 4 November 19481949: 6 March 1949 to 29 November 19491950: 24 March 1950 to 19 November 19501951: 6 March 1951 to 15 November 19511952: 29 February 1952 to 14 October 19521953: 1 March 1953 to 21 October 19531954: 10 February 1954 to 26 October 19541955: 1 March 1955 to 25 December 19551956: 17 February 1956 to 29 October 19561957: 10 February 1957 to 16 October 19571958: 3 April 1958 to 9 October 19581959: 17 February 1959 to 26 October 19591960: 9 February 1960 to 2 November 19601961: 7 March 1961 to 1 November 19611962: 9 February 1962 to 11 November 19621963: 10 January 1963 to 6 November 19631964: 3 April 1964 to 17 October 19641965: 5 April 1965 to 23 October 19651966: 1 April 1966 to 22 October 19661967: 10 March 1967 to 26 November 19671968: 2 May 1968 to 30 October 19681969: 5 April 1969 to 12 November 19691970: 12 April 1970 to 22 November 19701971: 3 January 1971 to 30 October 19711972: 23 January 1972 to 31 October 19721973: 19 April 1973 to 14 November 19731974: 3 March 1974 to 20 September 19741975: 26 January 1975 to 24 October 19751976: 4 March 1976 to 4 October 19761977: 3 April 1977 to 20 October 19771978: 18 April 1978 to 13 October 19781979: 25 April 1979 to 29 October 19791980: 19 February 1980 to 9 November 19801981: 30 March 1981 to 17 October 19811982: 17 February 1982 to 31 October 19821983: 18 April 1983 to 22 November 19831984: 18 March 1984 to 20 October 19841985: 15 April 1985 to 18 October 19851986: 18 February 1986 to 18 November 19861987: 10 April 1987 to 11 December 19871988: 10 March 1988 to 14 November 19881989: 3 January 1989 to 8 November 19891990: 22 April 1990 to 20 October 19901991: 4 March 1991 to 29 October 19911992: 29 April 1992 to 31 October 19921993: 9 March 1993 to 19 October 19931994: 8 February 1994 to 8 November 19941995: 10 February 1995 to 10 November 19951996: 19 February 1996 to 6 November 19961997: 28 March 1997 to 31 October 19971998: 30 March 1998 to 16 October 19981999: 27 February 1999 to 22 October 19992000: 13 February 2000 to 16 October 20002001: 15 April 2001 to 24 October 20012002: 13 March 2002 to 7 October 20022003: 13 March 2003 to 31 October 20032004: 7 March 2004 to 31 October 20042005: 13 March 2005 to 27 November 20052006: 2 January 2006 to 9 November 20062007: 12 May 2007 to 2 December 20072008: 24 February 2008 to 12 November 20082009: 18 February 2009 to 15 October 20092010: 23 April 2010 to 27 October 20102011: 24 February 2011 to 24 October 20112012: 31 March 2012 to 5 November 20122013: 29 January 2013 to 3 December 20132014: 14 February 2014 to 30 October 20142015: 7 April 2015 to 11 November 20152016: 1 March 2016 to 3 November 20162017: 7 February 2017 to 18 November 20172018: 10 March 2018 to 14 October 20182019: 15 February 2019 to 24 October 20192020: 11 March 2020 to 14 November 20202021: 27 March 2021 to 26 October 20212022: 21 March 2022 to 7 November 20222023: 22 February 2023 to 28 October 20232024: 22 February 2024 to 30 December 20242025: 8 February 2025 to 20 November 20252026: 2 January 2026 to 11 October 202619471957196719771987199720072017JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at San Antonio Intl AP meeting 30 C (86 F).
First to last qualifying date each year at San Antonio Intl AP
YearFirst dateLast date
19471947-03-271947-11-10
19481948-03-231948-11-04
19491949-03-061949-11-29
19501950-03-241950-11-19
19511951-03-061951-11-15
19521952-02-291952-10-14
19531953-03-011953-10-21
19541954-02-101954-10-26
19551955-03-011955-12-25
19561956-02-171956-10-29
19571957-02-101957-10-16
19581958-04-031958-10-09
19591959-02-171959-10-26
19601960-02-091960-11-02
19611961-03-071961-11-01
19621962-02-091962-11-11
19631963-01-101963-11-06
19641964-04-031964-10-17
19651965-04-051965-10-23
19661966-04-011966-10-22
19671967-03-101967-11-26
19681968-05-021968-10-30
19691969-04-051969-11-12
19701970-04-121970-11-22
19711971-01-031971-10-30
19721972-01-231972-10-31
19731973-04-191973-11-14
19741974-03-031974-09-20
19751975-01-261975-10-24
19761976-03-041976-10-04
19771977-04-031977-10-20
19781978-04-181978-10-13
19791979-04-251979-10-29
19801980-02-191980-11-09
19811981-03-301981-10-17
19821982-02-171982-10-31
19831983-04-181983-11-22
19841984-03-181984-10-20
19851985-04-151985-10-18
19861986-02-181986-11-18
19871987-04-101987-12-11
19881988-03-101988-11-14
19891989-01-031989-11-08
19901990-04-221990-10-20
19911991-03-041991-10-29
19921992-04-291992-10-31
19931993-03-091993-10-19
19941994-02-081994-11-08
19951995-02-101995-11-10
19961996-02-191996-11-06
19971997-03-281997-10-31
19981998-03-301998-10-16
19991999-02-271999-10-22
20002000-02-132000-10-16
20012001-04-152001-10-24
20022002-03-132002-10-07
20032003-03-132003-10-31
20042004-03-072004-10-31
20052005-03-132005-11-27
20062006-01-022006-11-09
20072007-05-122007-12-02
20082008-02-242008-11-12
20092009-02-182009-10-15
20102010-04-232010-10-27
20112011-02-242011-10-24
20122012-03-312012-11-05
20132013-01-292013-12-03
20142014-02-142014-10-30
20152015-04-072015-11-11
20162016-03-012016-11-03
20172017-02-072017-11-18
20182018-03-102018-10-14
20192019-02-152019-10-24
20202020-03-112020-11-14
20212021-03-272021-10-26
20222022-03-212022-11-07
20232023-02-222023-10-28
20242024-02-222024-12-30
20252025-02-082025-11-20
20262026-01-022026-10-11

Every Fixed Threshold

Fixed thresholds at San Antonio Intl AP
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days802042025178
35 C (95 F): Days80119201179
40 C (104 F): Days283120233
90 F (32.2 C): Days801622025129
100 F (37.8 C): Days6875202324
110 F (43.3 C): Days2120001
0 C (32 F): Ice days (max20519891
0 C (32 F): Frost days (min804319668
-10 C (14 F): Days with min9319833
20 C (68 F): Tropical nights (min801722022160
25 C (77 F): Days with min8083202374
10 mm (0.39 in): Days with 10 mm or more rain8037197620
25 mm (0.98 in): Days with 25 mm or more rain801719578
50 mm (1.97 in): Days with 50 mm or more rain67819735
100 mm (3.94 in): Days with 100 mm or more rain28219571
200 mm (7.87 in): Days with 200 mm or more rain3119981
10 cm (3.9 in): Days with 10 cm or more snowfall2119491
25 cm (9.8 in): Days with 25 cm or more snowfall1119851

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1947.

Download the Data

  • Data for San Antonio Intl AP 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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-14).