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

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Overcast

23°F

-5°C

Humidity 74%
Wind Speed NW 12 mph
Barometer 30.49 in
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 30 Nov 5:50 pm CST
Extended Forecast for

2 Miles WSW Alton IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 20. Northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 20 °F

    Mostly Cloudy

  • Monday

    Monday: A 50 percent chance of snow after 2pm. Cloudy, with a high near 31. East wind 3 to 6 mph.

    High: 31 °F

    Cloudy then
    Chance Snow

  • Monday Night

    Monday Night: Snow, mainly before midnight. Low around 20. Calm wind becoming northwest around 6 mph in the evening. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    Low: 20 °F

    Snow then
    Chance Snow

  • Tuesday

    Tuesday: Partly sunny, with a high near 31. Northwest wind around 6 mph becoming south in the afternoon.

    High: 31 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 20. South wind 3 to 6 mph.

    Low: 20 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 39.

    High: 39 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 13.

    Low: 13 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 22.

    High: 22 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 11.

    Low: 11 °F

    Mostly Cloudy
    then Slight
    Chance Snow

Detailed Forecast

Tonight
Mostly cloudy, with a low around 20. Northwest wind 5 to 7 mph becoming calm in the evening.
Monday
A 50 percent chance of snow after 2pm. Cloudy, with a high near 31. East wind 3 to 6 mph.
Monday Night
Snow, mainly before midnight. Low around 20. Calm wind becoming northwest around 6 mph in the evening. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Tuesday
Partly sunny, with a high near 31. Northwest wind around 6 mph becoming south in the afternoon.
Tuesday Night
Partly cloudy, with a low around 20. South wind 3 to 6 mph.
Wednesday
Partly sunny, with a high near 39.
Wednesday Night
Mostly cloudy, with a low around 13.
Thursday
Mostly sunny, with a high near 22.
Thursday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 11.
Friday
A chance of snow before noon, then a chance of rain and snow. Mostly cloudy, with a high near 33. Chance of precipitation is 40%.
Friday Night
A slight chance of freezing rain. Mostly cloudy, with a low around 25. Chance of precipitation is 20%.
Saturday
Mostly cloudy, with a high near 37.
Saturday Night
Mostly cloudy, with a low around 26.
Sunday
Mostly cloudy, with a high near 36.
Basemap Options
Click map to change the forecast location
Loading map...
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:
4:51 pm CST Nov 30, 2025
Forecast Valid:
6pm CST Nov 30, 2025-6pm CST Dec 7, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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