National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Overcast

47°F

8°C

Humidity 66%
Wind Speed NA
Barometer 29.90 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 8 Nov 11:15 pm CST
Extended Forecast for

Alton IL

  • Tonight

    Tonight: A chance of sprinkles before midnight. Cloudy, with a low around 35. Breezy, with a northwest wind 16 to 20 mph, with gusts as high as 31 mph.

    Low: 35 °F

    Chance
    Sprinkles and
    Breezy

  • Sunday

    Sunday: A chance of flurries. Cloudy through mid morning, then gradual clearing, with a high near 39. Breezy, with a northwest wind 17 to 21 mph, with gusts as high as 31 mph.

    High: 39 °F

    Chance
    Flurries and
    Breezy

  • Sunday Night

    Sunday Night: A chance of flurries. Partly cloudy, with a low around 24. Northwest wind 11 to 15 mph, with gusts as high as 23 mph.

    Low: 24 °F

    Chance
    Flurries

  • Monday

    Monday: Sunny, with a high near 41. Northwest wind 9 to 16 mph, with gusts as high as 24 mph.

    High: 41 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 27. West wind 5 to 7 mph becoming light and variable.

    Low: 27 °F

    Partly Cloudy

  • Veterans Day

    Veterans Day: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 35.

    Low: 35 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of sprinkles before midnight. Cloudy, with a low around 35. Breezy, with a northwest wind 16 to 20 mph, with gusts as high as 31 mph.
Sunday
A chance of flurries. Cloudy through mid morning, then gradual clearing, with a high near 39. Breezy, with a northwest wind 17 to 21 mph, with gusts as high as 31 mph.
Sunday Night
A chance of flurries. Partly cloudy, with a low around 24. Northwest wind 11 to 15 mph, with gusts as high as 23 mph.
Monday
Sunny, with a high near 41. Northwest wind 9 to 16 mph, with gusts as high as 24 mph.
Monday Night
Partly cloudy, with a low around 27. West wind 5 to 7 mph becoming light and variable.
Veterans Day
Partly sunny, with a high near 55.
Tuesday Night
Mostly clear, with a low around 41.
Wednesday
Sunny, with a high near 63.
Wednesday Night
Mostly clear, with a low around 35.
Thursday
Mostly sunny, with a high near 63.
Thursday Night
Partly cloudy, with a low around 46.
Friday
Sunny, with a high near 71.
Friday Night
Partly cloudy, with a low around 54.
Saturday
Mostly sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Alton IL
 38.88°N 90.16°W (Elev. 466 ft)
Last Update:
10:31 pm CST Nov 8, 2025
Forecast Valid:
11pm CST Nov 8, 2025-6pm CST Nov 15, 2025
 
Forecast Discussion
 
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Additional Resources

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