|
Typical San Antonio September Weather 1991–2020 |
||
|---|---|---|
| Average daily high | 90.9 °F | |
| Average daily low | 70.0 °F | |
| Average monthly precipitation | 3.9 inches | |
| Average monthly snow | none | |
| Daily chance of precipitation | 23.0% | |
| Daily chance of snow | 0% | |
|
San Antonio September Weather Records 1893–2024 |
||
|---|---|---|
| Highest temperature | 111 °F | September 5, 2000 |
| Lowest temperature | 41 °F | September 29, 1909 |
| Highest daily low | 82 °F | September 4, 1904 |
| Lowest daily high | 63 °F | September 22, 1995 |
| Hottest average high temperature | 99.5 °F | 1904 |
| Coldest average high temperature | 80.7 °F | 1974 |
| Most daily precipitation | 6.5 inches | September 26, 1973 |
| Most monthly precipitation | 16.9 inches | 2018 |
| Most daily snow | none | - |
| Most monthly snow | none | - |
| Day | Average (°F) | Record (°F) | ||
|---|---|---|---|---|
| High | Low | High | Low | |
| September 1 | 94.1 | 73.6 | 105 | 63 |
| September 2 | 93.9 | 73.4 | 108 | 62 |
| September 3 | 93.7 | 73.2 | 107 | 53 |
| September 4 | 93.5 | 73.1 | 109 | 56 |
| September 5 | 93.3 | 72.9 | 111 | 54 |
| September 6 | 93.1 | 72.7 | 102 | 53 |
| September 7 | 92.9 | 72.5 | 103 | 56 |
| September 8 | 92.7 | 72.3 | 104 | 54 |
| September 9 | 92.4 | 72.0 | 103 | 57 |
| September 10 | 92.2 | 71.7 | 102 | 57 |
| September 11 | 92.0 | 71.5 | 104 | 56 |
| September 12 | 91.7 | 71.2 | 102 | 56 |
| September 13 | 91.5 | 70.9 | 101 | 59 |
| September 14 | 91.3 | 70.6 | 100 | 60 |
| September 15 | 91.0 | 70.2 | 100 | 55 |
| September 16 | 90.7 | 69.8 | 99 | 57 |
| September 17 | 90.5 | 69.6 | 100 | 57 |
| September 18 | 90.3 | 69.3 | 100 | 52 |
| September 19 | 90.1 | 69.1 | 101 | 46 |
| September 20 | 89.9 | 68.8 | 107 | 51 |
| September 21 | 89.7 | 68.6 | 101 | 48 |
| September 22 | 89.5 | 68.4 | 102 | 46 |
| September 23 | 89.2 | 68.1 | 99 | 49 |
| September 24 | 88.9 | 67.8 | 107 | 51 |
| September 25 | 88.7 | 67.4 | 109 | 48 |
| September 26 | 88.4 | 67.1 | 103 | 47 |
| September 27 | 88.1 | 66.8 | 102 | 46 |
| September 28 | 87.9 | 66.5 | 104 | 42 |
| September 29 | 87.7 | 66.3 | 97 | 41 |
| September 30 | 87.5 | 65.9 | 102 | 43 |