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.

Fair

67°F

19°C

Humidity 59%
Wind Speed SE 7 mph
Barometer 29.76 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 21 Mar 10:15 pm CDT
Extended Forecast for

Wood River IL

  • Tonight

    Tonight: Clear, with a low around 63. South wind around 8 mph, with gusts as high as 20 mph.

    Low: 63 °F

    Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 88. South wind 7 to 15 mph becoming northwest in the afternoon.

    High: 88 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 38. Breezy, with a north wind 11 to 21 mph, with gusts as high as 32 mph.

    Low: 38 °F

    Decreasing
    Clouds and
    Breezy then
    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 58. Northeast wind 7 to 10 mph.

    High: 58 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 41. East wind around 6 mph.

    Low: 41 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 73.

    High: 73 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of rain and thunderstorms. Partly cloudy, with a low around 56. Chance of precipitation is 20%.

    Low: 56 °F

    Slight Chance
    T-storms

Detailed Forecast

Tonight
Clear, with a low around 63. South wind around 8 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 88. South wind 7 to 15 mph becoming northwest in the afternoon.
Sunday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 38. Breezy, with a north wind 11 to 21 mph, with gusts as high as 32 mph.
Monday
Mostly sunny, with a high near 58. Northeast wind 7 to 10 mph.
Monday Night
Mostly cloudy, with a low around 41. East wind around 6 mph.
Tuesday
Mostly sunny, with a high near 64.
Tuesday Night
Mostly cloudy, with a low around 45.
Wednesday
Partly sunny, with a high near 73.
Wednesday Night
A slight chance of rain and thunderstorms. Partly cloudy, with a low around 56. Chance of precipitation is 20%.
Thursday
A 20 percent chance of rain and thunderstorms after 1pm. Mostly sunny, with a high near 84.
Thursday Night
A 40 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 45.
Friday
A 40 percent chance of rain. Mostly cloudy, with a high near 57.
Friday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 37.
Saturday
A 20 percent chance of rain. Mostly sunny, with a high near 57.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Wood River IL
 38.86°N 90.08°W (Elev. 436 ft)
Last Update:
9:51 pm CDT Mar 21, 2026
Forecast Valid:
10pm CDT Mar 21, 2026-6pm CDT Mar 28, 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