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

61°F

16°C

Humidity 55%
Wind Speed S 14 mph
Barometer 30.02 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 30 Mar 6:50 am CDT
Extended Forecast for

2 Miles WSW Alton IL

  • Today

    Today: Mostly sunny, with a high near 83. Breezy, with a southwest wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 83 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 64. South wind 7 to 14 mph, with gusts as high as 23 mph.

    Low: 64 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: A slight chance of rain, then a chance of rain and thunderstorms after 10am. Partly sunny, with a high near 86. Breezy, with a southwest wind 11 to 20 mph, with gusts as high as 34 mph. Chance of precipitation is 30%.

    High: 86 °F

    Chance
    T-storms and
    Breezy

  • Tuesday Night

    Tuesday Night: A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 57. Southwest wind 7 to 11 mph becoming north after midnight. Chance of precipitation is 70%.

    Low: 57 °F

    Chance
    T-storms then
    Rain Likely

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm. High near 75. Northeast wind 8 to 11 mph becoming southeast in the afternoon. Chance of precipitation is 80%.

    High: 75 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain and possibly a thunderstorm. Low around 62. Chance of precipitation is 80%.

    Low: 62 °F

    Rain

  • Thursday

    Thursday: Rain and possibly a thunderstorm. High near 76. Chance of precipitation is 90%.

    High: 76 °F

    Rain

  • Thursday Night

    Thursday Night: Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 57. Chance of precipitation is 70%.

    Low: 57 °F

    Rain Likely

  • Friday

    Friday: A chance of rain and thunderstorms. Mostly cloudy, with a high near 79. Chance of precipitation is 50%.

    High: 79 °F

    Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 83. Breezy, with a southwest wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 64. South wind 7 to 14 mph, with gusts as high as 23 mph.
Tuesday
A slight chance of rain, then a chance of rain and thunderstorms after 10am. Partly sunny, with a high near 86. Breezy, with a southwest wind 11 to 20 mph, with gusts as high as 34 mph. Chance of precipitation is 30%.
Tuesday Night
A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 57. Southwest wind 7 to 11 mph becoming north after midnight. Chance of precipitation is 70%.
Wednesday
Rain and possibly a thunderstorm. High near 75. Northeast wind 8 to 11 mph becoming southeast in the afternoon. Chance of precipitation is 80%.
Wednesday Night
Rain and possibly a thunderstorm. Low around 62. Chance of precipitation is 80%.
Thursday
Rain and possibly a thunderstorm. High near 76. Chance of precipitation is 90%.
Thursday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 57. Chance of precipitation is 70%.
Friday
A chance of rain and thunderstorms. Mostly cloudy, with a high near 79. Chance of precipitation is 50%.
Friday Night
Rain likely, mainly after 1am. Mostly cloudy, with a low around 56. Chance of precipitation is 60%.
Saturday
Rain and thunderstorms likely. Mostly cloudy, with a high near 69. Chance of precipitation is 60%.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 41.
Sunday
A 20 percent chance of rain. Mostly sunny, with a high near 59.
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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:
6:46 am CDT Mar 30, 2026
Forecast Valid:
7am CDT Mar 30, 2026-6pm CDT Apr 5, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation