San Antonio, Texas, United States climate
Average temperatures, precipitation and all-time records for San Antonio, Texas, United States, with every day graded against ~45 years of local climate history (1981–2026). Its warmest month is August, averaging a high of 97°F, and its coldest is January, with an average low of 39°F.
San Antonio is a city in the U.S. state of Texas. It is the seventh-most populous city in the United States, the second-most populous city in Texas, and the second-most populous city in the Southern U.S., with a population of 1.43 million at the 2020 census. via Wikipedia
How today compares
Latest recorded day: 2026-07-21. Each reading placed on San Antonio, Texas, United States's own ±7-day seasonal distribution.
San Antonio average temperatures by month
Typical daily high and low, and average precipitation, for each month in San Antonio, Texas, United States, based on 1981–2026 records. The wettest month is January (0.10 in on an average day).
| Month | Avg high | Avg low | Avg precip |
|---|---|---|---|
| January | 62°F | 39°F | 0.10 in |
| February | 68°F | 44°F | 0.10 in |
| March | 75°F | 50°F | 0.10 in |
| April | 84°F | 58°F | 0.10 in |
| May | 89°F | 66°F | 0.10 in |
| June | 94°F | 72°F | 0.10 in |
| July | 96°F | 74°F | 0.10 in |
| August | 97°F | 75°F | 0.10 in |
| September | 91°F | 70°F | 0.10 in |
| October | 83°F | 60°F | 0.10 in |
| November | 73°F | 51°F | 0.10 in |
| December | 65°F | 42°F | 0.10 in |
Each bar spans the 10th-percentile daily low to the 90th-percentile daily high (the range most days fall within), coloured cold → hot on a shared -10°F to 115°F scale, so the whole year's rhythm reads at a glance.
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Record extremes
- Hottest day on record: 113°F on 2000-09-05
- Coldest day on record: 9°F on 1989-12-23
Percentiles compare each day to San Antonio, Texas, United States's own history, so grades are relative to this location: a “Near Record” day here isn't the same temperature as elsewhere. How the grades work →