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

59°F

15°C

Humidity 42%
Wind Speed SE 9 mph
Barometer 29.95 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 6 Nov 4:50 pm CST
Extended Forecast for

Grantfork IL

  • Tonight

    Tonight: A 30 percent chance of rain, mainly before 4am. Mostly cloudy, with a low around 51. Southeast wind 7 to 13 mph becoming southwest after midnight. Winds could gust as high as 21 mph.

    Low: 51 °F

    Partly Cloudy
    then Chance
    Rain

  • Friday

    Friday: Mostly cloudy through mid morning, then gradual clearing, with a high near 71. West wind 9 to 13 mph, with gusts as high as 20 mph.

    High: 71 °F

    Becoming
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 41. West wind 5 to 7 mph becoming calm after midnight.

    Low: 41 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of rain after noon. Partly sunny, with a high near 65. Calm wind becoming west 5 to 9 mph in the afternoon.

    High: 65 °F

    Partly Sunny
    then Chance
    Rain

  • Saturday Night

    Saturday Night: A 50 percent chance of rain before midnight. Mostly cloudy, with a low around 33. Northwest wind 9 to 15 mph, with gusts as high as 23 mph.

    Low: 33 °F

    Chance Rain
    then Mostly
    Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 41.

    High: 41 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 23.

    Low: 23 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 42.

    High: 42 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 24.

    Low: 24 °F

    Mostly Clear

Detailed Forecast

Tonight
A 30 percent chance of rain, mainly before 4am. Mostly cloudy, with a low around 51. Southeast wind 7 to 13 mph becoming southwest after midnight. Winds could gust as high as 21 mph.
Friday
Mostly cloudy through mid morning, then gradual clearing, with a high near 71. West wind 9 to 13 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 41. West wind 5 to 7 mph becoming calm after midnight.
Saturday
A 30 percent chance of rain after noon. Partly sunny, with a high near 65. Calm wind becoming west 5 to 9 mph in the afternoon.
Saturday Night
A 50 percent chance of rain before midnight. Mostly cloudy, with a low around 33. Northwest wind 9 to 15 mph, with gusts as high as 23 mph.
Sunday
Mostly sunny, with a high near 41.
Sunday Night
Partly cloudy, with a low around 23.
Monday
Sunny, with a high near 42.
Monday Night
Mostly clear, with a low around 24.
Veterans Day
Mostly sunny, with a high near 54.
Tuesday Night
Mostly clear, with a low around 41.
Wednesday
Sunny, with a high near 63.
Wednesday Night
Mostly clear, with a low around 36.
Thursday
Sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grantfork IL
 38.83°N 89.68°W (Elev. 551 ft)
Last Update:
5:16 pm CST Nov 6, 2025
Forecast Valid:
5pm CST Nov 6, 2025-6pm CST Nov 13, 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