Current conditions at
St. Louis Regional Airport (KALN)
Lat: 38.89°NLon: 90.03°WElev: 518ft.
Fair
73°F
23°C
| Humidity | 77% |
| Wind Speed | S 5 mph |
| Barometer | 29.95 in |
| Dewpoint | 65°F (18°C) |
| Visibility | 10.00 mi |
| Last update | 14 Oct 3:15 am CDT |
Extended Forecast for
3 Miles SSW Alton IL
Overnight
Low: 72 °F
T-storms
LikelyWednesday
High: 79 °F
T-storms then
Chance
ShowersWednesday Night
Low: 65 °F
Chance
T-stormsThursday
High: 83 °F
Showers and
Patchy FogThursday Night
Low: 48 °F
Showers
Friday
High: 62 °F
Partly Sunny
and BreezyFriday Night
Low: 39 °F
Mostly Clear
Saturday
High: 64 °F
Sunny
Saturday Night
Low: 39 °F
Clear
Detailed Forecast
Overnight
Showers and thunderstorms likely, mainly after 5am. Mostly cloudy, with a low around 72. West wind 5 to 7 mph. Chance of precipitation is 60%.
Wednesday
Showers and thunderstorms before 10am, then showers likely and possibly a thunderstorm between 10am and noon, then a chance of showers and thunderstorms after noon. High near 79. West wind 5 to 7 mph becoming south in the morning. Chance of precipitation is 80%.
Wednesday Night
A slight chance of showers, then a chance of showers and thunderstorms after 10pm. Mostly cloudy, with a low around 65. North wind 5 to 7 mph becoming east after midnight. Chance of precipitation is 30%.
Thursday
Showers and thunderstorms, mainly before 2pm, then showers likely and possibly a thunderstorm after 5pm. Patchy fog between 10am and 11am. High near 83. East wind 6 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 80%.
Thursday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 48. Southwest wind 8 to 17 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%.
Friday
Partly sunny, with a high near 62. Breezy.
Friday Night
Mostly clear, with a low around 39.
Saturday
Sunny, with a high near 64.
Saturday Night
Clear, with a low around 39.
Sunday
Sunny, with a high near 70.
Sunday Night
Partly cloudy, with a low around 45.
Monday
Partly sunny, with a high near 74.
Monday Night
Partly cloudy, with a low around 48.
Tuesday
Mostly sunny, with a high near 79.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
3 Miles SSW Alton IL
38.86°N 90.16°W (Elev. 413 ft)
38.86°N 90.16°W (Elev. 413 ft)
1:26 am CDT Oct 14, 2026
3am CDT Oct 14, 2026-6pm CDT Oct 20, 2026
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