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

32°F

0°C

Humidity 64%
Wind Speed N 6 mph
Barometer 30.68 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 28 Mar 7:45 am CDT
Extended Forecast for

2 Miles WSW Alton IL

Freeze Warning March 28, 08:21am until March 28, 09:00am
Click here for hazard details and duration
...
  •  
    Freeze Warning March 28, 08:21am until March 28, 09:00am

    NOW until 9:00am Sat

    Freeze Warning

  • Today

    High: 57 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 40. South wind around 8 mph.

    Low: 40 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 70. South wind 7 to 14 mph, with gusts as high as 21 mph.

    High: 70 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 57. South wind 9 to 11 mph.

    Low: 57 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 84. South wind 9 to 17 mph, with gusts as high as 26 mph.

    High: 84 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of rain, with thunderstorms also possible after 1pm. Partly sunny, with a high near 85. Chance of precipitation is 50%.

    High: 85 °F

    Chance Rain
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm. Low around 47. Chance of precipitation is 90%.

    Low: 47 °F

    Rain

Detailed Forecast

Today
Sunny, with a high near 57. North wind 5 to 8 mph becoming south in the afternoon.
Tonight
Partly cloudy, with a low around 40. South wind around 8 mph.
Sunday
Partly sunny, with a high near 70. South wind 7 to 14 mph, with gusts as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 57. South wind 9 to 11 mph.
Monday
Mostly sunny, with a high near 84. South wind 9 to 17 mph, with gusts as high as 26 mph.
Monday Night
Partly cloudy, with a low around 66.
Tuesday
A chance of rain, with thunderstorms also possible after 1pm. Partly sunny, with a high near 85. Chance of precipitation is 50%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 47. Chance of precipitation is 90%.
Wednesday
A 50 percent chance of rain. Cloudy, with a high near 57.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 40.
Thursday
Rain likely. Mostly cloudy, with a high near 57. Chance of precipitation is 60%.
Thursday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 44.
Friday
A 40 percent chance of rain. Partly sunny, with a high near 69.
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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:
8:16 am CDT Mar 28, 2026
Forecast Valid:
8am CDT Mar 28, 2026-6pm CDT Apr 3, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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