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

35°F

2°C

Humidity 89%
Wind Speed E 9 mph
Barometer 30.28 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 2 Mar 3:35 am CST
Extended Forecast for

Bethalto IL

  • Overnight

    Overnight: Rain likely, mainly before 4am. Cloudy, with a low around 33. East wind around 10 mph. Chance of precipitation is 60%.

    Low: 33 °F

    Rain Likely

  • Monday

    Monday: A chance of drizzle, mainly before 2pm. Cloudy, with a high near 42. East wind 8 to 11 mph.

    High: 42 °F

    Chance
    Drizzle

  • Monday Night

    Monday Night: A chance of showers, then showers and possibly a thunderstorm after 3am. Patchy fog after 10pm. Low around 38. East wind 5 to 7 mph. Chance of precipitation is 90%.

    Low: 38 °F

    Patchy Fog
    then Showers
    and Patchy
    Fog

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. Patchy fog before 11am. High near 60. South wind 6 to 8 mph. Chance of precipitation is 90%.

    High: 60 °F

    Showers and
    Patchy Fog

  • Tuesday Night

    Tuesday Night: Showers likely, then showers and possibly a thunderstorm after 9pm. Low around 52. Southeast wind around 7 mph. Chance of precipitation is 80%.

    Low: 52 °F

    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 66. Chance of precipitation is 80%.

    High: 66 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 53. Chance of precipitation is 80%.

    Low: 53 °F

    Showers

  • Thursday

    Thursday: Showers likely, mainly before noon. Partly sunny, with a high near 68. Chance of precipitation is 60%.

    High: 68 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 55. Chance of precipitation is 50%.

    Low: 55 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Overnight
Rain likely, mainly before 4am. Cloudy, with a low around 33. East wind around 10 mph. Chance of precipitation is 60%.
Monday
A chance of drizzle, mainly before 2pm. Cloudy, with a high near 42. East wind 8 to 11 mph.
Monday Night
A chance of showers, then showers and possibly a thunderstorm after 3am. Patchy fog after 10pm. Low around 38. East wind 5 to 7 mph. Chance of precipitation is 90%.
Tuesday
Showers and possibly a thunderstorm. Patchy fog before 11am. High near 60. South wind 6 to 8 mph. Chance of precipitation is 90%.
Tuesday Night
Showers likely, then showers and possibly a thunderstorm after 9pm. Low around 52. Southeast wind around 7 mph. Chance of precipitation is 80%.
Wednesday
Showers and possibly a thunderstorm. High near 66. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 53. Chance of precipitation is 80%.
Thursday
Showers likely, mainly before noon. Partly sunny, with a high near 68. Chance of precipitation is 60%.
Thursday Night
A chance of showers, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 55. Chance of precipitation is 50%.
Friday
Showers likely and possibly a thunderstorm before noon, then a chance of showers. Partly sunny, with a high near 77. Chance of precipitation is 60%.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 55. Chance of precipitation is 70%.
Saturday
A 50 percent chance of showers. Cloudy, with a high near 66.
Saturday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 45.
Sunday
A 20 percent chance of showers. Mostly cloudy, with a high near 65.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Bethalto IL
 38.88°N 90.02°W (Elev. 499 ft)
Last Update:
3:06 am CST Mar 2, 2026
Forecast Valid:
3am CST Mar 2, 2026-6pm CDT Mar 8, 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