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.

Fair

79°F

26°C

Humidity 32%
Wind Speed SW 13 mph
Barometer 29.91 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 25 Mar 3:45 pm CDT
Extended Forecast for

2 Miles WSW Alton IL

  • Tonight

    Tonight: Mostly clear, with a low around 63. South wind around 10 mph.

    Low: 63 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 92. Southwest wind 8 to 16 mph, with gusts as high as 24 mph.

    High: 92 °F

    Sunny

  • Thursday Night

    Thursday Night: Rain and possibly a thunderstorm. Low around 44. Southwest wind 10 to 17 mph becoming north after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 90%.

    Low: 44 °F

    Rain Likely
    then Rain

  • Friday

    Friday: A 30 percent chance of rain before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 53. North wind around 17 mph, with gusts as high as 26 mph.

    High: 53 °F

    Chance Rain

  • Friday Night

    Friday Night: Mostly clear, with a low around 31. North wind 5 to 13 mph.

    Low: 31 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 65.

    High: 65 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of rain and thunderstorms after 1am. Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 63. South wind around 10 mph.
Thursday
Sunny, with a high near 92. Southwest wind 8 to 16 mph, with gusts as high as 24 mph.
Thursday Night
Rain and possibly a thunderstorm. Low around 44. Southwest wind 10 to 17 mph becoming north after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 90%.
Friday
A 30 percent chance of rain before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 53. North wind around 17 mph, with gusts as high as 26 mph.
Friday Night
Mostly clear, with a low around 31. North wind 5 to 13 mph.
Saturday
Sunny, with a high near 56.
Saturday Night
Partly cloudy, with a low around 41.
Sunday
Partly sunny, with a high near 65.
Sunday Night
A 20 percent chance of rain and thunderstorms after 1am. Mostly cloudy, with a low around 54.
Monday
A 20 percent chance of rain and thunderstorms. Mostly sunny, with a high near 80.
Monday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 61.
Tuesday
A 40 percent chance of rain and thunderstorms. Partly sunny, with a high near 82.
Tuesday Night
A 40 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 62.
Wednesday
A 40 percent chance of rain and thunderstorms. Partly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Alton IL
 38.88°N 90.19°W (Elev. 407 ft)
Last Update:
1:25 pm CDT Mar 25, 2026
Forecast Valid:
4pm CDT Mar 25, 2026-6pm CDT Apr 1, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation