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Typical San Antonio December Weather 1991–2020 |
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|---|---|---|
| Average daily high | 65.2 °F | |
| Average daily low | 43.0 °F | |
| Average monthly precipitation | 2.0 inches | |
| Average monthly snow | 0.1 inches | |
| Daily chance of precipitation | 24.1% | |
| Daily chance of snow | 0.12% | |
|
San Antonio December Weather Records 1893–2024 |
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|---|---|---|
| Highest temperature | 90 °F | December 25, 1955 |
| Lowest temperature | 6 °F | December 23, 1989 |
| Highest daily low | 71 °F | December 26, 2015 |
| Lowest daily high | 23 °F | December 22, 1989 |
| Hottest average high temperature | 75.1 °F | 1933 |
| Coldest average high temperature | 52.1 °F | 1909 |
| Most daily precipitation | 6.0 inches | December 19, 1991 |
| Most monthly precipitation | 14.0 inches | 1991 |
| Most daily snow | 1.9 inches | December 7, 2017 |
| Most monthly snow | 1.9 inches | 2017 |
| Day | Average (°F) | Record (°F) | ||
|---|---|---|---|---|
| High | Low | High | Low | |
| December 1 | 68.5 | 45.9 | 82 | 19 |
| December 2 | 68.3 | 45.7 | 86 | 22 |
| December 3 | 67.9 | 45.4 | 86 | 24 |
| December 4 | 67.7 | 45.1 | 85 | 27 |
| December 5 | 67.5 | 44.9 | 85 | 23 |
| December 6 | 67.2 | 44.7 | 83 | 20 |
| December 7 | 67.0 | 44.4 | 84 | 14 |
| December 8 | 66.8 | 44.2 | 83 | 27 |
| December 9 | 66.5 | 44.1 | 85 | 22 |
| December 10 | 66.2 | 43.9 | 83 | 18 |
| December 11 | 65.9 | 43.6 | 88 | 21 |
| December 12 | 65.7 | 43.5 | 84 | 18 |
| December 13 | 65.6 | 43.3 | 85 | 19 |
| December 14 | 65.4 | 43.2 | 85 | 22 |
| December 15 | 65.2 | 43.0 | 85 | 23 |
| December 16 | 65.1 | 42.9 | 81 | 17 |
| December 17 | 64.9 | 42.7 | 82 | 19 |
| December 18 | 64.7 | 42.5 | 81 | 22 |
| December 19 | 64.4 | 42.3 | 82 | 18 |
| December 20 | 64.3 | 42.3 | 85 | 17 |
| December 21 | 64.3 | 42.2 | 85 | 10 |
| December 22 | 64.2 | 42.1 | 84 | 13 |
| December 23 | 64.0 | 41.8 | 83 | 6 |
| December 24 | 63.9 | 41.7 | 83 | 15 |
| December 25 | 63.9 | 41.6 | 90 | 11 |
| December 26 | 63.9 | 41.6 | 83 | 15 |
| December 27 | 63.9 | 41.5 | 82 | 20 |
| December 28 | 63.7 | 41.4 | 83 | 20 |
| December 29 | 63.6 | 41.4 | 85 | 16 |
| December 30 | 63.4 | 41.4 | 83 | 9 |
| December 31 | 63.4 | 41.3 | 83 | 13 |