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Heat in the Central U.S.; Heavy Rain Possible for South Texas; Monitoring Erin Tropical Impacts

Hot temperatures are forecast over the Plains and into the lower Mississippi River Valley Friday where Heat Advisories have been issued. Heavy rain from a disturbance in the western Gulf could bring flooding to south Texas. Erin could bring tropical storm conditions and heavy rain to Puerto Rico and the USVI this weekend with dangerous surf and rip currents impacting the western Atlantic Basin. Read More >

Current conditions at

Marshall County Airport (KC75)

Lat: 41.02°NLon: 89.39°WElev: 545ft.

Fair

73°F

23°C

Humidity 79%
Wind Speed E 3 mph
Barometer 30.02 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 14 Aug 8:15 pm CDT
Extended Forecast for

Toulon IL

  • Tonight

    Tonight: Mostly clear, with a low around 66. Calm wind becoming east southeast around 5 mph.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 91. South wind 3 to 7 mph.

    High: 91 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers after 1am. Mostly clear, with a low around 72. Calm wind becoming south around 5 mph after midnight.

    Low: 72 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: Sunny and hot, with a high near 95. Heat index values as high as 102. South southwest wind 5 to 8 mph.

    High: 95 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 73. South southwest wind 3 to 5 mph.

    Low: 73 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 94. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 94 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 72. Calm wind becoming east southeast around 5 mph.

    Low: 72 °F

    Mostly Clear

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy
    then Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 66. Calm wind becoming east southeast around 5 mph.
Friday
Mostly sunny, with a high near 91. South wind 3 to 7 mph.
Friday Night
A 20 percent chance of showers after 1am. Mostly clear, with a low around 72. Calm wind becoming south around 5 mph after midnight.
Saturday
Sunny and hot, with a high near 95. Heat index values as high as 102. South southwest wind 5 to 8 mph.
Saturday Night
Mostly clear, with a low around 73. South southwest wind 3 to 5 mph.
Sunday
Sunny, with a high near 94. Calm wind becoming southwest around 6 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 72. Calm wind becoming east southeast around 5 mph.
Monday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92.
Monday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72.
Tuesday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Tuesday Night
Mostly cloudy, with a low around 68.
Wednesday
Partly sunny, with a high near 83.
Wednesday Night
Partly cloudy, with a low around 62.
Thursday
Mostly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Toulon IL
 41.1°N 89.86°W (Elev. 725 ft)
Last Update:
7:40 pm CDT Aug 14, 2025
Forecast Valid:
8pm CDT Aug 14, 2025-6pm CDT Aug 21, 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