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.

Fair

45°F

7°C

Humidity 57%
Wind Speed NW 17 mph
Barometer 30.28 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 5 Apr 8:45 am CDT
Extended Forecast for

3 Miles N West Alton MO

  • Today

    Today: Sunny, with a high near 58. Northwest wind 11 to 14 mph, with gusts as high as 22 mph.

    High: 58 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 40. West wind 3 to 8 mph.

    Low: 40 °F

    Clear

  • Monday

    Monday: Increasing clouds, with a high near 60. Northwest wind 6 to 13 mph.

    High: 60 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 37. Northwest wind around 9 mph.

    Low: 37 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 52. East wind around 9 mph.

    High: 52 °F

    Mostly Cloudy

  • Tuesday Night

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

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 58. Northwest wind 11 to 14 mph, with gusts as high as 22 mph.
Tonight
Clear, with a low around 40. West wind 3 to 8 mph.
Monday
Increasing clouds, with a high near 60. Northwest wind 6 to 13 mph.
Monday Night
A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 37. Northwest wind around 9 mph.
Tuesday
Mostly cloudy, with a high near 52. East wind around 9 mph.
Tuesday Night
Mostly cloudy, with a low around 41.
Wednesday
Mostly sunny, with a high near 74.
Wednesday Night
Partly cloudy, with a low around 54.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 77.
Thursday Night
A slight chance of showers and thunderstorms, then a chance of showers after 1am. Mostly cloudy, with a low around 56. Chance of precipitation is 30%.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 77.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 56.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N West Alton MO
 38.91°N 90.22°W (Elev. 407 ft)
Last Update:
6:26 am CDT Apr 5, 2026
Forecast Valid:
9am CDT Apr 5, 2026-6pm CDT Apr 11, 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