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 and Breezy

72°F

22°C

Humidity 73%
Wind Speed S 21 G 30 mph
Barometer 29.77 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 2 Apr 2:45 pm CDT
Extended Forecast for

2 Miles WSW Alton IL

Wind Advisory until April 2, 07:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory until April 2, 07:00pm

    NOW until 7:00pm Thu

    Wind Advisory

  • This Afternoon

    High: 74 °F

    Chance
    T-storms and
    Breezy

  • Tonight

    Tonight: A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Breezy, with a south wind 15 to 20 mph becoming light and variable after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 50%.

    Low: 62 °F

    Chance
    T-storms and
    Breezy then
    Chance
    Showers

  • Friday

    Friday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 82. Light and variable wind becoming south 9 to 14 mph in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 50%.

    High: 82 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Low around 55. South wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 100%.

    Low: 55 °F

    Showers
    Likely then
    Showers

  • Saturday

    Saturday: Showers likely, mainly before 1pm. Mostly cloudy, with a steady temperature around 58. West wind 10 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.

    High: 58 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 40.

    Low: 40 °F

    Clear

Detailed Forecast

This Afternoon
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 74. Breezy, with a south wind around 23 mph, with gusts as high as 37 mph.
Tonight
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Breezy, with a south wind 15 to 20 mph becoming light and variable after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 50%.
Friday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 82. Light and variable wind becoming south 9 to 14 mph in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 50%.
Friday Night
A slight chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Low around 55. South wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 100%.
Saturday
Showers likely, mainly before 1pm. Mostly cloudy, with a steady temperature around 58. West wind 10 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Saturday Night
Partly cloudy, with a low around 40.
Sunday
Sunny, with a high near 58.
Sunday Night
Clear, with a low around 40.
Monday
Sunny, with a high near 62.
Monday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 36.
Tuesday
Mostly sunny, with a high near 56.
Tuesday Night
Partly cloudy, with a low around 38.
Wednesday
Mostly sunny, with a high near 70.
Wednesday Night
Partly cloudy, with a low around 51.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 76.
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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:
1:51 pm CDT Apr 2, 2026
Forecast Valid:
3pm CDT Apr 2, 2026-6pm CDT Apr 9, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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