Weather & Climate at Scott Air Force Base in St Clair, IL
Summary of the weather and climate in St Clair, IL:
- The average high in St Clair, IL is 68.6°F and average low is 45.8°F
- The hottest month is July with an high of 90.7°F
- The coldest month is January with an low of 23°F
- Annual rainfall is 41.65 inches. The rainiest month is May with an average of 4.9 inches.
- Annual snowfall is 11.8 inches. The snowiest month is January with an average of 3.3 inches.
SOURCE: NOAA.GOV
Climate Table — Scott Air Force Base
Monthly Averages:
| High (°F) | Low (°F) | Rainfall (inches) | Snowfall (inches) | |
|---|---|---|---|---|
| January | 42.7 | 23 | 2.29 | 3.3 |
| February | 47.6 | 26.5 | 2.24 | 3.3 |
| March | 58.6 | 35.5 | 3.2 | 1.4 |
| April | 69.6 | 45.9 | 3.86 | 0.2 |
| May | 78.4 | 55.7 | 4.9 | 0 |
| June | 87.1 | 64.4 | 4.26 | 0 |
| July | 90.7 | 68 | 4.05 | 0 |
| August | 89.8 | 65.5 | 3.3 | 0 |
| September | 83 | 56.3 | 3.28 | 0 |
| October | 72.2 | 45.7 | 3.44 | 0 |
| November | 58.5 | 36.5 | 3.92 | 0.3 |
| December | 45.1 | 26.5 | 2.91 | 3.3 |
Climate Charts — Scott Air Force Base
Weather through the year:
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