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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Hazardous Weather Conditions

Current conditions at

Marshall County Airport (KC75)

Lat: 41.02°NLon: 89.39°WElev: 545ft.

Partly Cloudy

67°F

19°C

Humidity 92%
Wind Speed Calm
Barometer 29.89 in
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 20 Sep 5:15 am CDT
Extended Forecast for

Wyanet IL

Flood Watch September 20, 05:33am until September 20, 01:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch September 20, 05:33am until September 20, 01:00pm

    NOW until 1:00pm Sun

    Flood Watch

  • Overnight

    Low: 66 °F

    Heavy Rain
    and Patchy
    Fog

  • Sunday

    Sunday: Occasional showers and thunderstorms before 3pm, then a chance of showers. Some of the storms could produce heavy rainfall. Patchy fog before 9am. High near 72. Northeast wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 72 °F

    Heavy Rain
    and Patchy
    Fog

  • Sunday Night

    Sunday Night: A 30 percent chance of showers after 4am. Mostly cloudy, with a low around 58. Northeast wind around 15 mph, with gusts as high as 25 mph.

    Low: 58 °F

    Chance
    Showers

  • Monday

    Monday: A 30 percent chance of showers, mainly between 8am and noon. Mostly cloudy, with a high near 65. Northeast wind around 15 mph, with gusts as high as 25 mph.

    High: 65 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 54.

    Low: 54 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 64.

    High: 64 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

Detailed Forecast

Overnight
Occasional showers and thunderstorms. Some of the storms could produce heavy rainfall. Patchy fog. Low around 66. North wind around 5 mph. Chance of precipitation is 100%.
Sunday
Occasional showers and thunderstorms before 3pm, then a chance of showers. Some of the storms could produce heavy rainfall. Patchy fog before 9am. High near 72. Northeast wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday Night
A 30 percent chance of showers after 4am. Mostly cloudy, with a low around 58. Northeast wind around 15 mph, with gusts as high as 25 mph.
Monday
A 30 percent chance of showers, mainly between 8am and noon. Mostly cloudy, with a high near 65. Northeast wind around 15 mph, with gusts as high as 25 mph.
Monday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 54.
Tuesday
Partly sunny, with a high near 64.
Tuesday Night
Partly cloudy, with a low around 49.
Wednesday
Mostly sunny, with a high near 67.
Wednesday Night
Partly cloudy, with a low around 50.
Thursday
Mostly sunny, with a high near 67.
Thursday Night
Mostly cloudy, with a low around 52.
Friday
Partly sunny, with a high near 70.
Friday Night
Partly cloudy, with a low around 50.
Saturday
Mostly sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Wyanet IL
 41.36°N 89.58°W (Elev. 607 ft)
Last Update:
4:31 am CDT Sep 20, 2026
Forecast Valid:
5am CDT Sep 20, 2026-6pm CDT Sep 26, 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