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

Severe Thunderstorms and Critical Fire Weather Wednesday

Scattered severe thunderstorms are possible across portions of the northern High Plains Wednesday afternoon and evening. Severe wind gusts are the primary hazard. Gusty winds and low relative humidity will contribute to critical fire weather conditions across parts of the northern Great Plains and Great Basin Wednesday. Read More >

Current conditions at

Fort Madison Municipal Airport (KFSW)

Lat: 40.66°NLon: 91.33°WElev: 719ft.

Fair

68°F

20°C

Humidity 40%
Wind Speed W 14 G 20 mph
Barometer 29.95 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 12 May 10:35 pm CDT
Extended Forecast for

Elvaston IL

  • Tonight

    Tonight: Clear, with a low around 54. Northwest wind around 10 mph.

    Low: 54 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 75. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 75 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 47. North wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.

    Low: 47 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 79. South wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 79 °F

    Sunny

  • Thursday Night

    Thursday Night: Showers after 1am. Low around 57. Chance of precipitation is 80%.

    Low: 57 °F

    Mostly Cloudy
    then Showers

  • Friday

    Friday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 62.

    Low: 62 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.

    Low: 64 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Clear, with a low around 54. Northwest wind around 10 mph.
Wednesday
Sunny, with a high near 75. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Clear, with a low around 47. North wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Thursday
Sunny, with a high near 79. South wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Showers after 1am. Low around 57. Chance of precipitation is 80%.
Friday
Mostly sunny, with a high near 90.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 62.
Saturday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Sunday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Monday
Showers likely. Mostly cloudy, with a high near 88. Chance of precipitation is 60%.
Monday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 63.
Tuesday
A 30 percent chance of showers. Mostly cloudy, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Elvaston IL
 40.39°N 91.25°W (Elev. 646 ft)
Last Update:
9:57 pm CDT May 12, 2026
Forecast Valid:
10pm CDT May 12, 2026-6pm CDT May 19, 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