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Built 2026-10-19 (19 October 2026)

Austin San Antonio Threshold Days by Year (USW00012971)

16 fixed thresholds counted per year at Austin San Antonio (USW00012971): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Austin San Antonio Thresholds

  • Austin San Antonio: days with a maximum temperature at or above 30 C (86 F) in 29 years, most in 2025 with 208.
  • Austin San Antonio: days with a maximum temperature at or above 35 C (95 F) in 29 years, most in 2022 with 126.
  • Austin San Antonio: days with a maximum temperature at or above 90 F (32.2 C) in 29 years, most in 2025 with 166.
  • Austin San Antonio: nights with a minimum temperature at or below 0 C (32 F) in 29 years, most in 2010 with 32.
  • 16 fixed thresholds have at least one qualifying day at Austin San Antonio.
29 years with a qualifying day
Days at or above 30 C (86 F) per year at Austin San Antonio Days per year at Austin San Antonio with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 208 in 2025. 01002003001997: 1351998: 1271999: 1672000: 1532001: 1342002: 1562003: 1552004: 1532005: 1732006: 1902007: 1462008: 1742009: 1782010: 1572011: 1922012: 1642013: 1592014: 1752015: 1682016: 1712017: 1872018: 1652019: 1632020: 1882021: 1662022: 1972023: 1702024: 1992025: 2081997200020032006200920122015201820212024
Days per year at Austin San Antonio with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 208 in 2025.
Days at or above 30 C (86 F) per year at Austin San Antonio
YearDaysDecade average
1997135143
1998127143
1999167143
2000153161.2
2001134161.2
2002156161.2
2003155161.2
2004153161.2
2005173161.2
2006190161.2
2007146161.2
2008174161.2
2009178161.2
2010157170.1
2011192170.1
2012164170.1
2013159170.1
2014175170.1
2015168170.1
2016171170.1
2017187170.1
2018165170.1
2019163170.1
2020188188
2021166188
2022197188
2023170188
2024199188
2025208188
First to last qualifying date each year at Austin San Antonio For each year, a bar from the first to the last day at Austin San Antonio meeting 30 C (86 F). 1997: 21 March 1997 to 31 October 19971998: 28 March 1998 to 16 October 19981999: 27 February 1999 to 29 October 19992000: 13 February 2000 to 15 October 20002001: 8 April 2001 to 24 October 20012002: 13 March 2002 to 8 October 20022003: 13 March 2003 to 2 November 20032004: 31 March 2004 to 31 October 20042005: 13 March 2005 to 27 November 20052006: 3 January 2006 to 9 November 20062007: 7 May 2007 to 2 December 20072008: 25 February 2008 to 5 November 20082009: 18 February 2009 to 29 October 20092010: 23 April 2010 to 31 October 20102011: 24 February 2011 to 2 November 20112012: 23 February 2012 to 9 November 20122013: 29 January 2013 to 3 December 20132014: 14 February 2014 to 28 October 20142015: 7 April 2015 to 11 November 20152016: 1 March 2016 to 16 November 20162017: 7 February 2017 to 18 November 20172018: 28 February 2018 to 7 November 20182019: 9 March 2019 to 6 November 20192020: 11 March 2020 to 24 November 20202021: 26 March 2021 to 10 December 20212022: 21 February 2022 to 7 November 20222023: 21 February 2023 to 7 November 20232024: 22 February 2024 to 30 December 20242025: 6 February 2025 to 19 November 202519972001200520092013201720212025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Austin San Antonio meeting 30 C (86 F).
First to last qualifying date each year at Austin San Antonio
YearFirst dateLast date
19971997-03-211997-10-31
19981998-03-281998-10-16
19991999-02-271999-10-29
20002000-02-132000-10-15
20012001-04-082001-10-24
20022002-03-132002-10-08
20032003-03-132003-11-02
20042004-03-312004-10-31
20052005-03-132005-11-27
20062006-01-032006-11-09
20072007-05-072007-12-02
20082008-02-252008-11-05
20092009-02-182009-10-29
20102010-04-232010-10-31
20112011-02-242011-11-02
20122012-02-232012-11-09
20132013-01-292013-12-03
20142014-02-142014-10-28
20152015-04-072015-11-11
20162016-03-012016-11-16
20172017-02-072017-11-18
20182018-02-282018-11-07
20192019-03-092019-11-06
20202020-03-112020-11-24
20212021-03-262021-12-10
20222022-02-212022-11-07
20232023-02-212023-11-07
20242024-02-222024-12-30
20252025-02-062025-11-19

Every Fixed Threshold

Fixed thresholds at Austin San Antonio
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days292082025208
35 C (95 F): Days29126202280
40 C (104 F): Days194820236
90 F (32.2 C): Days291662025166
100 F (37.8 C): Days2885202321
110 F (43.3 C): Days3220001
0 C (32 F): Ice days (max7320211
0 C (32 F): Frost days (min2932201017
-10 C (14 F): Days with min2120101
20 C (68 F): Tropical nights (min291602024140
25 C (77 F): Days with min2957202313
10 mm (0.39 in): Days with 10 mm or more rain2641200417
25 mm (0.98 in): Days with 25 mm or more rain2615200410
50 mm (1.97 in): Days with 50 mm or more rain22620042
100 mm (3.94 in): Days with 100 mm or more rain8220041
200 mm (7.87 in): Days with 200 mm or more rain1120071

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1997.

Download the Data

  • Data for Austin San Antonio 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).