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

66°F

19°C

Humidity 49%
Wind Speed W 18 G 24 mph
Barometer 29.83 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 17 May 10:50 am CDT
Extended Forecast for

East Alton IL

  • Today

    Today: Sunny, with a high near 74. West wind around 18 mph, with gusts as high as 28 mph.

    High: 74 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 55. Northwest wind 5 to 10 mph becoming light in the evening.

    Low: 55 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 78. North wind 5 to 7 mph becoming east in the afternoon.

    High: 78 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 62. East wind around 7 mph. Chance of precipitation is 80%.

    Low: 62 °F

    Slight Chance
    T-storms then
    Showers

  • Monday

    Monday: Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. High near 76. East wind 9 to 11 mph. Chance of precipitation is 80%.

    High: 76 °F

    Showers

  • Monday Night

    Monday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 65. Chance of precipitation is 100%.

    Low: 65 °F

    T-storms
    Likely then
    T-storms

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 77. Chance of precipitation is 90%.

    High: 77 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 55. Chance of precipitation is 70%.

    Low: 55 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A 50 percent chance of showers. Mostly cloudy, with a high near 63.

    High: 63 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 74. West wind around 18 mph, with gusts as high as 28 mph.
Tonight
Partly cloudy, with a low around 55. Northwest wind 5 to 10 mph becoming light in the evening.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 78. North wind 5 to 7 mph becoming east in the afternoon.
Sunday Night
A slight chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 62. East wind around 7 mph. Chance of precipitation is 80%.
Monday
Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. High near 76. East wind 9 to 11 mph. Chance of precipitation is 80%.
Monday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 65. Chance of precipitation is 100%.
Tuesday
Showers and possibly a thunderstorm. High near 77. Chance of precipitation is 90%.
Tuesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 55. Chance of precipitation is 70%.
Wednesday
A 50 percent chance of showers. Mostly cloudy, with a high near 63.
Wednesday Night
A 30 percent chance of showers before 1am. Partly cloudy, with a low around 48.
Thursday
A 20 percent chance of showers. Sunny, with a high near 68.
Thursday Night
Mostly clear, with a low around 49.
Friday
Mostly sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
East Alton IL
 38.88°N 90.11°W (Elev. 436 ft)
Last Update:
5:37 am CDT May 17, 2025
Forecast Valid:
11am CDT May 17, 2025-6pm CDT May 23, 2025
 
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