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

Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce considerable, potentially life-threatening, flooding across the lower Mississippi River Valley and central Great Lakes region through tonight. Tropical Storm Arthur will move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight. An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana. Read More >

Hazardous Weather Conditions

Current conditions at

Clinton Municipal Airport (KCWI)

Lat: 41.83°NLon: 90.33°WElev: 696ft.

Partly Cloudy

74°F

23°C

Humidity 76%
Wind Speed W 14 mph
Barometer 29.37 in (994.3 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 17 Jun 5:56 pm CDT
Extended Forecast for

Fulton IL

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 57. West wind around 15 mph, with gusts as high as 25 mph.

    Low: 57 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 75. Northwest wind around 15 mph, with gusts as high as 20 mph.

    High: 75 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers between 10pm and 11pm. Mostly clear, with a low around 54. West wind 5 to 10 mph becoming light northwest in the evening. Chance of precipitation is 20%.

    Low: 54 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 79. Calm wind becoming west around 5 mph in the morning.

    High: 79 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Showers likely, then showers and possibly a thunderstorm after 1pm. High near 75. Chance of precipitation is 80%.

    High: 75 °F

    Showers

  • Sunday Night

    Sunday Night: A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 56.

    Low: 56 °F

    Chance
    Showers

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 57. West wind around 15 mph, with gusts as high as 25 mph.
Thursday
Mostly sunny, with a high near 75. Northwest wind around 15 mph, with gusts as high as 20 mph.
Thursday Night
A slight chance of showers between 10pm and 11pm. Mostly clear, with a low around 54. West wind 5 to 10 mph becoming light northwest in the evening. Chance of precipitation is 20%.
Juneteenth
Sunny, with a high near 79. Calm wind becoming west around 5 mph in the morning.
Friday Night
Partly cloudy, with a low around 58.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 60.
Sunday
Showers likely, then showers and possibly a thunderstorm after 1pm. High near 75. Chance of precipitation is 80%.
Sunday Night
A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 56.
Monday
Mostly sunny, with a high near 77.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
Mostly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fulton IL
 41.88°N 90.17°W (Elev. 574 ft)
Last Update:
5:46 pm CDT Jun 17, 2026
Forecast Valid:
6pm CDT Jun 17, 2026-6pm CDT Jun 24, 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