Hazardous Weather Conditions

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

64°F

18°C

Humidity 73%
Wind Speed S 14 mph
Barometer 30.09 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 12 Apr 7:45 am CDT
Extended Forecast for

2 Miles WSW Alton IL

  • Today

    Today: A 30 percent chance of showers, mainly after 5pm.  Increasing clouds, with a high near 82. Breezy, with a south wind 9 to 14 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 31 mph.

    High: 82 °F

    Mostly Sunny
    then Chance
    Showers and
    Breezy

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 1am.  Mostly cloudy, with a low around 65. Southwest wind 10 to 18 mph, with gusts as high as 28 mph.

    Low: 65 °F

    Chance
    T-storms

  • Monday

    Monday: A slight chance of showers before 10am, then a slight chance of showers and thunderstorms between 10am and 1pm.  Mostly sunny, with a high near 87. South wind 9 to 16 mph, with gusts as high as 23 mph.  Chance of precipitation is 20%.

    High: 87 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 68. South wind 10 to 15 mph, with gusts as high as 23 mph.

    Low: 68 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 10am.  Partly sunny, with a high near 88. Southwest wind 9 to 16 mph, with gusts as high as 25 mph.  Chance of precipitation is 40%.

    High: 88 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm.  High near 82. Chance of precipitation is 80%.

    High: 82 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a low around 63. Chance of precipitation is 70%.

    Low: 63 °F

    Showers
    Likely

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 1pm.  Partly sunny, with a high near 83. Chance of precipitation is 30%.

    High: 83 °F

    Chance
    Showers

Detailed Forecast

Today
A 30 percent chance of showers, mainly after 5pm. Increasing clouds, with a high near 82. Breezy, with a south wind 9 to 14 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 31 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 65. Southwest wind 10 to 18 mph, with gusts as high as 28 mph.
Monday
A slight chance of showers before 10am, then a slight chance of showers and thunderstorms between 10am and 1pm. Mostly sunny, with a high near 87. South wind 9 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 68. South wind 10 to 15 mph, with gusts as high as 23 mph.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 88. Southwest wind 9 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Wednesday
Showers and possibly a thunderstorm. High near 82. Chance of precipitation is 80%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. Chance of precipitation is 70%.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 83. Chance of precipitation is 30%.
Thursday Night
Mostly clear, with a low around 61.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Saturday
Showers and thunderstorms likely. Partly sunny, with a high near 79. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Alton IL
 38.88°N 90.19°W (Elev. 407 ft)
8:26 am CDT Apr 12, 2026
8am CDT Apr 12, 2026-6pm CDT Apr 18, 2026
 
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Additional Resources

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