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

72°F

22°C

Humidity 73%
Wind Speed NE 6 mph
Barometer 29.98 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 29 Jul 8:50 am CDT
Extended Forecast for

2 Miles N Alton IL

  • Today

    Today: Sunny, with a high near 86. Northeast wind 6 to 9 mph.

    High: 86 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 65. Northeast wind 5 to 7 mph becoming calm in the evening.

    Low: 65 °F

    Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 87. Southeast wind 3 to 7 mph.

    High: 87 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 68. Southeast wind 5 to 7 mph.

    Low: 68 °F

    Mostly Cloudy

  • Friday

    Friday: Showers and thunderstorms likely. Partly sunny, with a high near 85. South wind 7 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    High: 85 °F

    T-storms
    Likely

  • Friday Night

    Friday Night: Showers and thunderstorms likely before 4am, then a chance of showers. Mostly cloudy, with a low around 68. Chance of precipitation is 70%.

    Low: 68 °F

    T-storms
    Likely

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 79. Chance of precipitation is 50%.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 65. Chance of precipitation is 30%.

    Low: 65 °F

    Chance
    Showers

  • Sunday

    Sunday: A 30 percent chance of showers, mainly after 1pm. Mostly sunny, with a high near 82.

    High: 82 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 86. Northeast wind 6 to 9 mph.
Tonight
Clear, with a low around 65. Northeast wind 5 to 7 mph becoming calm in the evening.
Thursday
Increasing clouds, with a high near 87. Southeast wind 3 to 7 mph.
Thursday Night
Mostly cloudy, with a low around 68. Southeast wind 5 to 7 mph.
Friday
Showers and thunderstorms likely. Partly sunny, with a high near 85. South wind 7 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Friday Night
Showers and thunderstorms likely before 4am, then a chance of showers. Mostly cloudy, with a low around 68. Chance of precipitation is 70%.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 79. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 65. Chance of precipitation is 30%.
Sunday
A 30 percent chance of showers, mainly after 1pm. Mostly sunny, with a high near 82.
Sunday Night
Mostly clear, with a low around 66.
Monday
A 30 percent chance of showers and thunderstorms. Sunny, with a high near 84.
Monday Night
Mostly clear, with a low around 67.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Alton IL
 38.93°N 90.16°W (Elev. 505 ft)
Last Update:
8:36 am CDT Jul 29, 2026
Forecast Valid:
9am CDT Jul 29, 2026-6pm CDT Aug 4, 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