San Antonio, TX
Texas · Records since 1885–2026
Records for August 11
🔥 Record High
August 11, 2023
+9° from 97° normal❄ Record Low
August 11, 1989
-10° from 76° normalAll-Time Records — San Antonio
Top 10 Record Highs — August 11
| # | Temp | Date |
|---|---|---|
| 🏆 | 106°F | August 11, 2023 |
| 2 | 106°F | August 11, 1936 |
| 3 | 104°F | August 11, 2015 |
| 4 | 103°F | August 11, 2011 |
| 5 | 103°F | August 11, 1969 |
| 6 | 103°F | August 11, 1962 |
| 7 | 103°F | August 11, 1948 |
| 8 | 102°F | August 11, 2014 |
| 9 | 102°F | August 11, 2012 |
| 10 | 102°F | August 11, 2009 |
Top 5 Record Lows — August 11
| # | Temp | Date |
|---|---|---|
| 🥶 | 66°F | August 11, 1989 |
| 2 | 66°F | August 11, 1965 |
| 3 | 68°F | August 11, 1931 |
| 4 | 69°F | August 11, 1975 |
| 5 | 69°F | August 11, 1966 |
Heat Wave Summary — San Antonio
threshold: 100°F (90th percentile of historical Jun–Aug highs)2026 Daily High Temperature vs Normal
Year to date130 of 221 days with data were above the 1991–2020 normal high for their date.
Days ≥ 90°F Per Year
1885–2026Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — San Antonio
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Jul 30, 2023 – Aug 21, 2023 | 23 | 106°F (Aug 9) | 104°F | 79°F |
| 2 | Jul 24, 1962 – Aug 13, 1962 | 21 | 106°F (Aug 13) | 102°F | 76°F |
| 3 | Aug 24, 2023 – Sep 10, 2023 | 18 | 105°F (Aug 27) | 102°F | 77°F |
| 4 | Jul 8, 2023 – Jul 22, 2023 | 15 | 106°F (Jul 13) | 103°F | 78°F |
| 5 | Jul 28, 2013 – Aug 11, 2013 | 15 | 105°F (Aug 6) | 103°F | 78°F |
| 6 | Jul 1, 2022 – Jul 14, 2022 | 14 | 107°F (Jul 11) | 102°F | 79°F |
| 7 | Aug 11, 2024 – Aug 23, 2024 | 13 | 108°F (Aug 21) | 102°F | 80°F |
| 8 | Jul 16, 1994 – Jul 27, 1994 | 12 | 104°F (Jul 25) | 101°F | 77°F |
| 9 | Aug 11, 1930 – Aug 22, 1930 | 12 | 103°F (Aug 19) | 101°F | 75°F |
| 10 | Aug 1, 2009 – Aug 12, 2009 | 12 | 103°F (Aug 6) | 102°F | 77°F |
Heat Waves Per Year
Warm Summer Nights (Jun–Aug)
Nights where the overnight low exceeded the 1991–2020 normal low
Above-Normal Summer Nights Per Year
Average June–August Low by Decade
Overnight lows · complete decades only
Precipitation
Actual vs. 1991–2020 full-month and full-season normals
Monthly Precipitation — Last 24 Months
Blue = actual · dashed line = monthly normal
Annual Precipitation Per Year (1970–2026)
Blue = above average · tan = below average · gold = 2026 (partial)
Heavy Rain Days Per Year (≥ 1.0")
Compare year-to-year changes in days with heavy rainfall (≥ 1.0")
Month in Review — July 2026
Average temperature · July 2026
103rd-warmest month on record
38th-warmest July of 142 on record
+-0.0° vs. 85.4° average (1991–2020)Longest 90°F Streak in July
15 consecutive days with highs of at least 90°F (Jul 17–31, 2026, peaking at 100°F)
The longest July streak since 2023 (3 years). The July record is 31 days, set in 2020.
Average July Temperature by Year
1885–2026 · 2026 highlighted
Warmest Julys on Record
| # | Year | Avg Temp |
|---|---|---|
| 1 | 2022 | 89.8°F |
| 2 | 2023 | 89.4°F |
| 3 | 2009 | 88.7°F |
| 4 | 2020 | 88.5°F |
| 5 | 1980 | 88.1°F |
| 6 | 1998 | 88.1°F |
| 7 | 2011 | 87.9°F |
| 8 | 1994 | 87.8°F |
| 9 | 2017 | 87.6°F |
| 10 | 1996 | 87.3°F |
Warmest Months on Record (Any Month)
| # | Month | Avg Temp |
|---|---|---|
| 1 | August 2023 | 90.7°F |
| 2 | August 2011 | 90.0°F |
| 3 | July 2022 | 89.8°F |
| 4 | July 2023 | 89.4°F |
| 5 | July 2009 | 88.7°F |
| 6 | August 2024 | 88.7°F |
| 7 | August 2019 | 88.6°F |
| 8 | August 2013 | 88.6°F |
| 9 | July 2020 | 88.5°F |
| 10 | August 2009 | 88.3°F |
Nearby Stations — July 2026
How the same month ranked at the closest reporting stations
| Station | Avg Temp | July Rank |
|---|---|---|
| San Antonio, TX | 85.3°F | 38th of 142 |
| Austin-Bergstrom Airport, TX | 85.2°F | 29th of 79 |
| Austin, TX | 85.8°F | 34th of 129 |
| Victoria, TX | 84.7°F | 52nd of 113 |
| Corpus Christi, TX | 85.7°F | 12th of 140 |