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.

Overcast

56°F

13°C

Humidity 71%
Wind Speed W 10 G 16 mph
Barometer 29.70 in
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 4 Nov 1:15 pm CST
Extended Forecast for

Eureka IL

  • This Afternoon

    This Afternoon: Patchy drizzle. Cloudy, with a high near 59. West southwest wind 11 to 16 mph, with gusts as high as 23 mph.

    High: 59 °F

    Patchy
    Drizzle

  • Tonight

    Tonight: Patchy drizzle before 10pm. Cloudy, with a low around 46. West southwest wind around 11 mph, with gusts as high as 21 mph.

    Low: 46 °F

    Patchy
    Drizzle then
    Mostly Cloudy

  • Thursday

    Thursday: A 30 percent chance of rain, mainly after 5pm. Mostly cloudy, with a high near 56. West southwest wind 9 to 15 mph, with gusts as high as 22 mph.

    High: 56 °F

    Partly Sunny
    then Chance
    Rain

  • Thursday Night

    Thursday Night: A 30 percent chance of rain before 7pm. Mostly cloudy, with a low around 39. West northwest wind 7 to 9 mph becoming north after midnight. Winds could gust as high as 17 mph.

    Low: 39 °F

    Chance Rain
    then Mostly
    Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 49. North wind 8 to 11 mph, with gusts as high as 18 mph.

    High: 49 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 30. North wind around 6 mph becoming calm in the evening.

    Low: 30 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 52. Calm wind becoming northwest around 6 mph.

    High: 52 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

Detailed Forecast

This Afternoon
Patchy drizzle. Cloudy, with a high near 59. West southwest wind 11 to 16 mph, with gusts as high as 23 mph.
Tonight
Patchy drizzle before 10pm. Cloudy, with a low around 46. West southwest wind around 11 mph, with gusts as high as 21 mph.
Thursday
A 30 percent chance of rain, mainly after 5pm. Mostly cloudy, with a high near 56. West southwest wind 9 to 15 mph, with gusts as high as 22 mph.
Thursday Night
A 30 percent chance of rain before 7pm. Mostly cloudy, with a low around 39. West northwest wind 7 to 9 mph becoming north after midnight. Winds could gust as high as 17 mph.
Friday
Mostly sunny, with a high near 49. North wind 8 to 11 mph, with gusts as high as 18 mph.
Friday Night
Mostly clear, with a low around 30. North wind around 6 mph becoming calm in the evening.
Saturday
Sunny, with a high near 52. Calm wind becoming northwest around 6 mph.
Saturday Night
Mostly clear, with a low around 31.
Sunday
Sunny, with a high near 58.
Sunday Night
Mostly clear, with a low around 34.
Monday
Sunny, with a high near 62.
Monday Night
Clear, with a low around 38.
Tuesday
Sunny, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Eureka IL
 40.71°N 89.27°W (Elev. 774 ft)
Last Update:
12:51 pm CST Nov 4, 2026
Forecast Valid:
1pm CST Nov 4, 2026-6pm CST Nov 10, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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