Current conditions at
St. Louis Regional Airport (KALN)
Lat: 38.89°NLon: 90.03°WElev: 518ft.
Fair
70°F
21°C
| Humidity | 40% |
| Wind Speed | E 3 mph |
| Barometer | 30.14 in |
| Dewpoint | 45°F (7°C) |
| Visibility | 10.00 mi |
| Last update | 3 Oct 5:45 pm CDT |
Extended Forecast for
Chesterfield IL
Tonight
Low: 43 °F
Mostly Clear
Sunday
High: 78 °F
Sunny
Sunday Night
Low: 46 °F
Mostly Clear
Monday
High: 73 °F
Sunny
Monday Night
Low: 45 °F
Clear
Tuesday
High: 77 °F
Sunny
Tuesday Night
Low: 50 °F
Clear
Wednesday
High: 82 °F
Sunny
Wednesday Night
Low: 50 °F
Clear
Detailed Forecast
Tonight
Mostly clear, with a low around 43. Calm wind.
Sunday
Sunny, with a high near 78. Calm wind becoming north 5 to 8 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 46. North wind 3 to 5 mph.
Monday
Sunny, with a high near 73. Northeast wind 3 to 5 mph.
Monday Night
Clear, with a low around 45. Light southeast wind.
Tuesday
Sunny, with a high near 77.
Tuesday Night
Clear, with a low around 50.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Clear, with a low around 50.
Thursday
Sunny, with a high near 81.
Thursday Night
Clear, with a low around 52.
Friday
Sunny, with a high near 83.
Friday Night
Clear, with a low around 55.
Saturday
Sunny, with a high near 86.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Chesterfield IL
39.26°N 90.06°W (Elev. 600 ft)
39.26°N 90.06°W (Elev. 600 ft)
1:45 pm CDT Oct 3, 2026
6pm CDT Oct 3, 2026-6pm CDT Oct 10, 2026
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