Historical weather in San Antonio, United States
San Antonio weather history for 2023-2025, with daily temperatures, precipitation, monthly summaries, and records from Open-Meteo archive data.
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Weather summary
Across 2023-2025, San Antonio averaged 28.2 C for daily highs and 17.3 C for daily lows across 1096 daily observations.
The warmest month was August 2023, with an average high of 39.3 C, while January 2024 had the lowest average low at 4.6 C.
The wettest month was May 2024, totaling 225.0 mm of precipitation.
The hottest day reached 41.8 C on August 9, 2023; the coldest night fell to -7.5 C on January 17, 2024.
Monthly summary table
| Year | Month | Avg low C | Avg high C | Rain and snow mm | Days |
|---|---|---|---|---|---|
| 2023 | January | 9.3 | 20.2 | 36.6 | 31 |
| 2023 | February | 9.1 | 20.8 | 40.3 | 28 |
| 2023 | March | 14.6 | 25.6 | 64.2 | 31 |
| 2023 | April | 15.5 | 26.2 | 154.2 | 30 |
| 2023 | May | 19.6 | 29.3 | 176.4 | 31 |
| 2023 | June | 24.0 | 36.9 | 43.1 | 30 |
| 2023 | July | 25.7 | 38.1 | 15.3 | 31 |
| 2023 | August | 26.2 | 39.3 | 8.0 | 31 |
| 2023 | September | 24.7 | 35.8 | 37.3 | 30 |
| 2023 | October | 17.9 | 27.4 | 190.0 | 31 |
| 2023 | November | 11.4 | 20.0 | 50.3 | 30 |
| 2023 | December | 8.6 | 19.8 | 32.4 | 31 |
| 2024 | January | 4.6 | 15.6 | 111.0 | 31 |
| 2024 | February | 10.3 | 21.8 | 69.1 | 29 |
| 2024 | March | 13.5 | 24.4 | 70.5 | 31 |
| 2024 | April | 17.4 | 27.9 | 86.3 | 30 |
| 2024 | May | 21.9 | 31.5 | 225.0 | 31 |
| 2024 | June | 24.3 | 34.4 | 107.4 | 30 |
| 2024 | July | 24.0 | 33.8 | 96.8 | 31 |
| 2024 | August | 25.5 | 36.5 | 23.0 | 31 |
| 2024 | September | 22.7 | 33.3 | 46.8 | 30 |
| 2024 | October | 19.7 | 32.1 | 5.4 | 31 |
| 2024 | November | 13.7 | 25.3 | 59.8 | 30 |
| 2024 | December | 11.4 | 20.8 | 63.9 | 31 |
| 2025 | January | 5.2 | 14.5 | 44.7 | 31 |
| 2025 | February | 8.4 | 19.7 | 45.2 | 28 |
| 2025 | March | 14.1 | 27.2 | 81.4 | 31 |
| 2025 | April | 17.7 | 29.5 | 71.2 | 30 |
| 2025 | May | 21.0 | 32.5 | 193.3 | 31 |
| 2025 | June | 23.9 | 34.1 | 129.6 | 30 |
| 2025 | July | 23.7 | 33.5 | 196.1 | 31 |
| 2025 | August | 25.2 | 36.1 | 33.9 | 31 |
| 2025 | September | 22.7 | 33.2 | 27.2 | 30 |
| 2025 | October | 19.5 | 30.8 | 54.1 | 31 |
| 2025 | November | 14.5 | 25.2 | 45.9 | 30 |
| 2025 | December | 10.3 | 20.4 | 24.0 | 31 |
Daily weather records
| Record | Date | Value |
|---|---|---|
| Hottest day | August 9, 2023 | 41.8 C |
| Coldest night | January 17, 2024 | -7.5 C |
| Wettest day | July 3, 2025 | 51.8 mm |
Related pages
Weather data source: Open-Meteo Archive API. City metadata source: GeoNames cities15000.