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

61°F

16°C

Humidity 52%
Wind Speed S 14 mph
Barometer 30.00 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 16 Feb 2:50 pm CST
Extended Forecast for

2 Miles WSW Alton IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 42. Southeast wind 6 to 8 mph.

    Low: 42 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 64. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 64 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms between 3am and 5am. Cloudy during the early evening, then gradual clearing, with a low around 55. South wind 14 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

    Low: 55 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Wednesday

    Wednesday: Sunny, with a high near 72. West wind 8 to 14 mph, with gusts as high as 22 mph.

    High: 72 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 47. Southwest wind around 6 mph becoming southeast in the evening.

    Low: 47 °F

    Partly Cloudy

  • Thursday

    Thursday: A 40 percent chance of showers. Mostly sunny, with a high near 73.

    High: 73 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 20 percent chance of showers before midnight. Mostly clear, with a low around 37.

    Low: 37 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 42. Southeast wind 6 to 8 mph.
Tuesday
Mostly cloudy, with a high near 64. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 25 mph.
Tuesday Night
A slight chance of showers and thunderstorms between 3am and 5am. Cloudy during the early evening, then gradual clearing, with a low around 55. South wind 14 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 72. West wind 8 to 14 mph, with gusts as high as 22 mph.
Wednesday Night
Partly cloudy, with a low around 47. Southwest wind around 6 mph becoming southeast in the evening.
Thursday
A 40 percent chance of showers. Mostly sunny, with a high near 73.
Thursday Night
A 20 percent chance of showers before midnight. Mostly clear, with a low around 37.
Friday
Mostly sunny, with a high near 51.
Friday Night
Partly cloudy, with a low around 31.
Saturday
Mostly sunny, with a high near 49.
Saturday Night
A 20 percent chance of rain. Partly cloudy, with a low around 28.
Sunday
Sunny, with a high near 43.
Sunday Night
Mostly clear, with a low around 22.
Monday
Mostly sunny, with a high near 42.
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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:
2:41 pm CST Feb 16, 2026
Forecast Valid:
3pm CST Feb 16, 2026-6pm CST Feb 23, 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