National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Light Rain

46°F

8°C

Humidity 93%
Wind Speed E 10 mph
Barometer 29.94 in
Dewpoint 45°F (7°C)
Visibility 5.00 mi
Wind Chill41°F (5°C)
Last update 14 Feb 7:50 pm CST
Extended Forecast for

2 Miles NNE Bethalto IL

  • Tonight

    Tonight: Rain, mainly before 4am. Low around 42. East wind 7 to 9 mph. Chance of precipitation is 100%.

    Low: 42 °F

    Rain

  • Sunday

    Sunday: A 20 percent chance of rain before 7am. Cloudy through mid morning, then gradual clearing, with a high near 58. Northeast wind 6 to 10 mph.

    High: 58 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37. Light and variable wind.

    Low: 37 °F

    Mostly Clear

  • Washington's Birthday

    Washington's Birthday: Partly sunny, with a high near 62. Light south wind increasing to 6 to 11 mph in the morning.

    High: 62 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 44. South wind 6 to 9 mph.

    Low: 44 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 65.

    High: 65 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 57.

    Low: 57 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

Detailed Forecast

Tonight
Rain, mainly before 4am. Low around 42. East wind 7 to 9 mph. Chance of precipitation is 100%.
Sunday
A 20 percent chance of rain before 7am. Cloudy through mid morning, then gradual clearing, with a high near 58. Northeast wind 6 to 10 mph.
Sunday Night
Mostly clear, with a low around 37. Light and variable wind.
Washington's Birthday
Partly sunny, with a high near 62. Light south wind increasing to 6 to 11 mph in the morning.
Monday Night
Mostly cloudy, with a low around 44. South wind 6 to 9 mph.
Tuesday
Mostly cloudy, with a high near 65.
Tuesday Night
Mostly cloudy, with a low around 57.
Wednesday
Sunny, with a high near 69.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
A 30 percent chance of rain, mainly after noon. Mostly sunny, with a high near 68.
Thursday Night
A 20 percent chance of rain. Partly cloudy, with a low around 38.
Friday
A 20 percent chance of rain. Mostly sunny, with a high near 51.
Friday Night
A 20 percent chance of snow. Partly cloudy, with a low around 30.
Saturday
Mostly sunny, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Bethalto IL
 38.92°N 90.02°W (Elev. 512 ft)
Last Update:
7:06 pm CST Feb 14, 2026
Forecast Valid:
8pm CST Feb 14, 2026-6pm CST Feb 21, 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