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

48°F

9°C

Humidity 68%
Wind Speed E 8 mph
Barometer 29.93 in
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 18 Nov 12:15 am CST
Extended Forecast for

Bethalto IL

  • Overnight

    Overnight: A 40 percent chance of rain and thunderstorms, mainly before 3am. Cloudy, with a low around 48. Southeast wind 9 to 11 mph, with gusts as high as 20 mph.

    Low: 48 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A slight chance of rain and thunderstorms between 8am and 1pm. Mostly cloudy, with a high near 68. Southeast wind 5 to 9 mph becoming northwest in the afternoon. Chance of precipitation is 20%.

    High: 68 °F

    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 45. North wind 3 to 6 mph.

    Low: 45 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 60. Light and variable wind.

    High: 60 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A 40 percent chance of rain after midnight. Mostly cloudy, with a low around 46. Calm wind becoming southeast around 5 mph after midnight.

    Low: 46 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: Rain likely, then rain and possibly a thunderstorm after noon. High near 66. Chance of precipitation is 80%.

    High: 66 °F

    Rain

  • Thursday Night

    Thursday Night: Rain likely and possibly a thunderstorm. Cloudy, with a low around 51. Chance of precipitation is 70%.

    Low: 51 °F

    Rain Likely

  • Friday

    Friday: Rain likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 60. Chance of precipitation is 70%.

    High: 60 °F

    Rain Likely

  • Friday Night

    Friday Night: A 30 percent chance of rain before midnight. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Chance Rain
    then Mostly
    Cloudy

Detailed Forecast

Overnight
A 40 percent chance of rain and thunderstorms, mainly before 3am. Cloudy, with a low around 48. Southeast wind 9 to 11 mph, with gusts as high as 20 mph.
Tuesday
A slight chance of rain and thunderstorms between 8am and 1pm. Mostly cloudy, with a high near 68. Southeast wind 5 to 9 mph becoming northwest in the afternoon. Chance of precipitation is 20%.
Tuesday Night
Mostly cloudy, with a low around 45. North wind 3 to 6 mph.
Wednesday
Mostly cloudy, with a high near 60. Light and variable wind.
Wednesday Night
A 40 percent chance of rain after midnight. Mostly cloudy, with a low around 46. Calm wind becoming southeast around 5 mph after midnight.
Thursday
Rain likely, then rain and possibly a thunderstorm after noon. High near 66. Chance of precipitation is 80%.
Thursday Night
Rain likely and possibly a thunderstorm. Cloudy, with a low around 51. Chance of precipitation is 70%.
Friday
Rain likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 60. Chance of precipitation is 70%.
Friday Night
A 30 percent chance of rain before midnight. Mostly cloudy, with a low around 41.
Saturday
Mostly sunny, with a high near 55.
Saturday Night
Partly cloudy, with a low around 38.
Sunday
Mostly sunny, with a high near 59.
Sunday Night
Partly cloudy, with a low around 40.
Monday
A 20 percent chance of rain. Partly sunny, with a high near 58.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Bethalto IL
 38.88°N 90.02°W (Elev. 499 ft)
Last Update:
10:41 pm CST Nov 17, 2025
Forecast Valid:
12am CST Nov 18, 2025-6pm CST Nov 24, 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