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

Marshall County Airport (KC75)

Lat: 41.02°NLon: 89.39°WElev: 545ft.

Fair

48°F

9°C

Humidity 92%
Wind Speed Calm
Barometer 30.01 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 11 Oct 6:55 am CDT
Extended Forecast for

Neponset IL

  • Today

    Today: Sunny, with a high near 84. South wind 5 to 10 mph.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 64. South wind 5 to 10 mph.

    Low: 64 °F

    Increasing
    Clouds

  • Columbus Day

    Columbus Day: Sunny, with a high near 88. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 88 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 70. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 70 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Showers likely after 1am. Partly cloudy, with a low around 60. Chance of precipitation is 60%.

    Low: 60 °F

    Mostly Clear
    then Showers
    Likely

  • Wednesday

    Wednesday: A 50 percent chance of showers. Mostly cloudy, with a high near 73.

    High: 73 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 55.

    Low: 55 °F

    Chance
    Showers

  • Thursday

    Thursday: Showers likely. Mostly cloudy, with a high near 70. Chance of precipitation is 70%.

    High: 70 °F

    Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 84. South wind 5 to 10 mph.
Tonight
Increasing clouds, with a low around 64. South wind 5 to 10 mph.
Columbus Day
Sunny, with a high near 88. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
Clear, with a low around 70. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 83.
Tuesday Night
Showers likely after 1am. Partly cloudy, with a low around 60. Chance of precipitation is 60%.
Wednesday
A 50 percent chance of showers. Mostly cloudy, with a high near 73.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 55.
Thursday
Showers likely. Mostly cloudy, with a high near 70. Chance of precipitation is 70%.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 49.
Friday
Partly sunny, with a high near 62. Breezy.
Friday Night
Mostly cloudy, with a low around 39. Breezy.
Saturday
Mostly sunny, with a high near 57.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Neponset IL
 41.3°N 89.79°W (Elev. 817 ft)
Last Update:
5:41 am CDT Oct 11, 2026
Forecast Valid:
7am CDT Oct 11, 2026-6pm CDT Oct 17, 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