Current conditions at
St. Louis Regional Airport (KALN)
Lat: 38.89°NLon: 90.03°WElev: 518ft.
Overcast
28°F
-2°C
| Humidity | 64% |
| Wind Speed | NA |
| Barometer | 30.32 in |
| Dewpoint | 18°F (-8°C) |
| Visibility | 10.00 mi |
| Last update | 10 Nov 4:35 am CST |
Extended Forecast for
Alton IL
Today
High: 38 °F
Becoming
SunnyTonight
Low: 24 °F
Increasing
CloudsVeterans Day
High: 55 °F
Decreasing
CloudsTuesday Night
Low: 37 °F
Mostly Clear
Wednesday
High: 63 °F
Sunny
Wednesday Night
Low: 35 °F
Mostly Clear
Thursday
High: 63 °F
Partly Sunny
Thursday Night
Low: 48 °F
Partly Cloudy
Friday
High: 74 °F
Mostly Sunny
Detailed Forecast
Today
Partly sunny, then gradually becoming sunny, with a high near 38. Northwest wind 9 to 16 mph, with gusts as high as 26 mph.
Tonight
Increasing clouds, with a low around 24. West wind 5 to 7 mph becoming light and variable.
Veterans Day
Mostly cloudy, then gradually becoming sunny, with a high near 55. South wind 7 to 14 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly clear, with a low around 37. West wind 6 to 9 mph.
Wednesday
Sunny, with a high near 63. Northwest wind 6 to 9 mph.
Wednesday Night
Mostly clear, with a low around 35.
Thursday
Partly sunny, with a high near 63.
Thursday Night
Partly cloudy, with a low around 48.
Friday
Mostly sunny, with a high near 74.
Friday Night
Partly cloudy, with a low around 55.
Saturday
Mostly sunny, with a high near 75.
Saturday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 52.
Sunday
A 50 percent chance of rain. Partly sunny, with a high near 62.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Alton IL
38.91°N 90.13°W (Elev. 499 ft)
38.91°N 90.13°W (Elev. 499 ft)
3:16 am CST Nov 10, 2025
4am CST Nov 10, 2025-6pm CST Nov 16, 2025
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