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

72°F

22°C

Humidity 47%
Wind Speed SW 10 G 17 mph
Barometer 29.83 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 8 May 1:45 pm CDT
Extended Forecast for

2 Miles WSW Alton IL

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 75. West wind around 11 mph.

    High: 75 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 11pm, then a slight chance of showers between 11pm and midnight. Low around 52. Northwest wind 5 to 9 mph becoming calm in the evening. Chance of precipitation is 80%.

    Low: 52 °F

    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 81. West wind 5 to 13 mph, with gusts as high as 20 mph.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers between 1am and 2am. Increasing clouds, with a low around 56. Light and variable wind becoming north 5 to 7 mph after midnight. Chance of precipitation is 20%.

    Low: 56 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 68. North wind 8 to 10 mph.

    High: 68 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of showers, with thunderstorms also possible after 1pm. Sunny, with a high near 79. Chance of precipitation is 20%.

    High: 79 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 75. West wind around 11 mph.
Tonight
Showers and possibly a thunderstorm before 11pm, then a slight chance of showers between 11pm and midnight. Low around 52. Northwest wind 5 to 9 mph becoming calm in the evening. Chance of precipitation is 80%.
Saturday
Sunny, with a high near 81. West wind 5 to 13 mph, with gusts as high as 20 mph.
Saturday Night
A slight chance of showers between 1am and 2am. Increasing clouds, with a low around 56. Light and variable wind becoming north 5 to 7 mph after midnight. Chance of precipitation is 20%.
Sunday
Partly sunny, with a high near 68. North wind 8 to 10 mph.
Sunday Night
Mostly clear, with a low around 45.
Monday
Sunny, with a high near 71.
Monday Night
Mostly clear, with a low around 50.
Tuesday
A slight chance of showers, with thunderstorms also possible after 1pm. Sunny, with a high near 79. Chance of precipitation is 20%.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 57.
Wednesday
Sunny, with a high near 76.
Wednesday Night
Mostly clear, with a low around 51.
Thursday
Sunny, with a high near 78.
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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:
2:26 pm CDT May 8, 2026
Forecast Valid:
2pm CDT May 8, 2026-6pm CDT May 14, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation