Hazardous Weather Conditions
Current conditions at
St. Louis Regional Airport (KALN)
Lat: 38.89°NLon: 90.03°WElev: 518ft.
Fair
59°F
15°C
| Humidity | 36% |
| Wind Speed | Vrbl 5 mph |
| Barometer | 30.51 in |
| Dewpoint | 32°F (0°C) |
| Visibility | 10.00 mi |
| Last update | 17 Oct 2:45 pm CDT |
Extended Forecast for
Williamson IL
Frost Advisory October 18, 01:00am until October 18, 09:00am
This Afternoon
High: 59 °F
Sunny
Tonight
Low: 34 °F
Clear then
Areas FrostSunday
High: 69 °F
Areas Frost
then SunnySunday Night
Low: 36 °F
Clear
Monday
High: 72 °F
Patchy Frost
then Mostly
SunnyMonday Night
Low: 39 °F
Mostly Clear
Tuesday
High: 75 °F
Sunny
Tuesday Night
Low: 41 °F
Partly Cloudy
Wednesday
High: 78 °F
Sunny
Detailed Forecast
This Afternoon
Sunny, with a high near 59. Light north wind.
Tonight
Areas of frost after 5am. Otherwise, clear, with a low around 34. Light and variable wind.
Sunday
Areas of frost before 8am. Otherwise, sunny, with a high near 69. South wind 3 to 8 mph.
Sunday Night
Clear, with a low around 36. Light and variable wind.
Monday
Patchy frost before 8am. Otherwise, sunny, with a high near 72. Calm wind.
Monday Night
Mostly clear, with a low around 39.
Tuesday
Sunny, with a high near 75.
Tuesday Night
Partly cloudy, with a low around 41.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 45.
Thursday
Sunny, with a high near 78.
Thursday Night
Mostly clear, with a low around 47.
Friday
Sunny, with a high near 79.
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)
2:20 pm CDT Oct 17, 2026
2pm CDT Oct 17, 2026-6pm CDT Oct 23, 2026
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