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.

Overcast

49°F

9°C

Humidity 45%
Wind Speed N 8 mph
Barometer 30.34 in
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 7 Apr 2:15 am CDT
Extended Forecast for

2 Miles WSW Alton IL

  • Overnight

    Overnight: Cloudy, with a low around 40. North wind around 11 mph, with gusts as high as 22 mph.

    Low: 40 °F

    Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of rain, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 53. East wind 10 to 14 mph.

    High: 53 °F

    Chance Rain
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 40. East wind 8 to 10 mph.

    Low: 40 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 74. South wind 9 to 16 mph, with gusts as high as 24 mph.

    High: 74 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 54. South wind 9 to 11 mph.

    Low: 54 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 58.

    Low: 58 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 72. Chance of precipitation is 60%.

    High: 72 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 54.

    Low: 54 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Cloudy, with a low around 40. North wind around 11 mph, with gusts as high as 22 mph.
Tuesday
A 30 percent chance of rain, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 53. East wind 10 to 14 mph.
Tuesday Night
Partly cloudy, with a low around 40. East wind 8 to 10 mph.
Wednesday
Partly sunny, with a high near 74. South wind 9 to 16 mph, with gusts as high as 24 mph.
Wednesday Night
Mostly clear, with a low around 54. South wind 9 to 11 mph.
Thursday
Sunny, with a high near 78.
Thursday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 58.
Friday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 72. Chance of precipitation is 60%.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 54.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 75. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 60.
Sunday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
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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:
2:21 am CDT Apr 7, 2026
Forecast Valid:
2am CDT Apr 7, 2026-6pm CDT Apr 13, 2026
 
Forecast Discussion
 
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Additional Resources

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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