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Hazardous Weather Conditions

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Mostly Cloudy

64°F

18°C

Humidity 60%
Wind Speed S 13 mph
Barometer 29.77 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 4 May 6:45 am CDT
Extended Forecast for

Grantfork IL

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 78. Breezy, with a southwest wind 10 to 20 mph.

    High: 78 °F

    Chance
    T-storms and
    Breezy

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly between 2am and 4am, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 55. South wind 7 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    Low: 55 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm before 7am, then showers between 7am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 61. South wind 6 to 13 mph becoming north in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 100%.

    High: 61 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 45. North wind 7 to 14 mph. Chance of precipitation is 80%.

    Low: 45 °F

    Showers

  • Wednesday

    Wednesday: A 20 percent chance of showers. Partly sunny, with a high near 58. North wind 6 to 9 mph.

    High: 58 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

  • Thursday Night

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

    Low: 44 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 78. Breezy, with a southwest wind 10 to 20 mph.
Tonight
Showers and thunderstorms likely, mainly between 2am and 4am, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 55. South wind 7 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Tuesday
Showers and possibly a thunderstorm before 7am, then showers between 7am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 61. South wind 6 to 13 mph becoming north in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 100%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 45. North wind 7 to 14 mph. Chance of precipitation is 80%.
Wednesday
A 20 percent chance of showers. Partly sunny, with a high near 58. North wind 6 to 9 mph.
Wednesday Night
Mostly cloudy, with a low around 42.
Thursday
Mostly sunny, with a high near 63.
Thursday Night
Mostly clear, with a low around 44.
Friday
Mostly sunny, with a high near 69.
Friday Night
A 30 percent chance of showers, mainly before 1am. Partly cloudy, with a low around 48.
Saturday
Sunny, with a high near 72.
Saturday Night
A 20 percent chance of showers. Partly cloudy, with a low around 51.
Sunday
A 30 percent chance of showers. Mostly sunny, with a high near 71.
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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:
6:21 am CDT May 4, 2026
Forecast Valid:
7am CDT May 4, 2026-6pm CDT May 10, 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