
| Month | Low | High |
|---|---|---|
| Jan | 38.6°F | 62.1°F |
| Feb | 42.4°F | 67.1°F |
| Mar | 49.9°F | 74.3°F |
| Apr | 56.9°F | 80.4°F |
| May | 65.5°F | 86.0°F |
| Jun | 71.6°F | 91.4°F |
| Jul | 74.0°F | 94.6°F |
| Aug | 73.6°F | 94.7°F |
| Sept | 68.8°F | 90.0°F |
| Oct | 59.4°F | 82.0°F |
| Nov | 48.6°F | 71.4°F |
| Dec | 40.8°F | 64.0°F |
San Antonio's coldest month is January when the average temperature overnight is 38.6°F. In August, the warmest month, the average day time temperature rises to 94.7°F.

| Month | Precipitation |
|---|---|
| Jan | 1.66in. |
| Feb | 1.75in. |
| Mar | 1.89in. |
| Apr | 2.60in. |
| May | 4.72in. |
| Jun | 4.30in. |
| Jul | 2.03in. |
| Aug | 2.57in. |
| Sept | 3.00in. |
| Oct | 3.86in. |
| Nov | 2.58in. |
| Dec | 1.96in. |
The driest month in San Antonio is January with 1.66 inches of precipitation, and with 4.72 inches May is the wettest month.