Current conditions at
St. Louis Regional Airport (KALN)
Lat: 38.89°NLon: 90.03°WElev: 518ft.
Fair
20°F
-7°C
| Humidity | 71% |
| Wind Speed | W 12 G 17 mph |
| Barometer | 30.40 in |
| Dewpoint | 12°F (-11°C) |
| Visibility | 10.00 mi |
| Wind Chill | 8°F (-13°C) |
| Last update | 29 Dec 10:35 pm CST |
Extended Forecast for
Williamson IL
Tonight
Low: 15 °F
Partly Cloudy
Tuesday
High: 33 °F
Increasing
CloudsTuesday Night
Low: 26 °F
Partly Cloudy
Wednesday
High: 40 °F
Mostly Cloudy
Wednesday Night
Low: 23 °F
Partly Cloudy
New Year's Day
High: 36 °F
Mostly Sunny
Thursday Night
Low: 26 °F
Mostly Cloudy
Friday
High: 43 °F
Mostly Cloudy
Friday Night
Low: 26 °F
Mostly Cloudy
Detailed Forecast
Tonight
Partly cloudy, with a low around 15. Northwest wind 9 to 14 mph, with gusts as high as 22 mph.
Tuesday
Increasing clouds, with a high near 33. West wind 8 to 11 mph.
Tuesday Night
Partly cloudy, with a low around 26. West wind 7 to 9 mph, with gusts as high as 21 mph.
Wednesday
Mostly cloudy, with a high near 40. West wind 7 to 11 mph.
Wednesday Night
Partly cloudy, with a low around 23. West wind around 6 mph becoming north after midnight.
New Year's Day
Mostly sunny, with a high near 36.
Thursday Night
Mostly cloudy, with a low around 26.
Friday
Mostly cloudy, with a high near 43.
Friday Night
Mostly cloudy, with a low around 26.
Saturday
Mostly sunny, with a high near 40.
Saturday Night
Partly cloudy, with a low around 26.
Sunday
Mostly sunny, with a high near 45.
Sunday Night
Partly cloudy, with a low around 30.
Monday
Mostly sunny, with a high near 49.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Williamson IL
38.98°N 89.76°W (Elev. 597 ft)
38.98°N 89.76°W (Elev. 597 ft)
10:41 pm CST Dec 29, 2025
10pm CST Dec 29, 2025-6pm CST Jan 5, 2026
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