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.

Mostly Cloudy

70°F

21°C

Humidity 63%
Wind Speed NW 8 G 17 mph
Barometer 29.86 in
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 16 Apr 12:55 pm CDT
Extended Forecast for

Lacon IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 77. West wind 9 to 11 mph, with gusts as high as 21 mph.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 55. Calm wind.

    Low: 55 °F

    Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 83. South wind 6 to 16 mph, with gusts as high as 26 mph.

    High: 83 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: Showers and thunderstorms before 2am, then showers likely. Some of the storms could produce heavy rainfall. Low around 44. South southeast wind around 14 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    Low: 44 °F

    Heavy Rain
    then Showers

  • Saturday

    Saturday: A 30 percent chance of showers before 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 56. West northwest wind around 15 mph, with gusts as high as 25 mph.

    High: 56 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Patchy frost after 3am. Otherwise, mostly clear, with a low around 34. West wind 6 to 13 mph, with gusts as high as 22 mph.

    Low: 34 °F

    Mostly Clear
    then Patchy
    Frost

  • Sunday

    Sunday: Patchy frost before 8am. Otherwise, sunny, with a high near 55. West northwest wind 6 to 14 mph, with gusts as high as 23 mph.

    High: 55 °F

    Patchy Frost
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 35.

    Low: 35 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 77. West wind 9 to 11 mph, with gusts as high as 21 mph.
Tonight
Clear, with a low around 55. Calm wind.
Friday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 83. South wind 6 to 16 mph, with gusts as high as 26 mph.
Friday Night
Showers and thunderstorms before 2am, then showers likely. Some of the storms could produce heavy rainfall. Low around 44. South southeast wind around 14 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Saturday
A 30 percent chance of showers before 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 56. West northwest wind around 15 mph, with gusts as high as 25 mph.
Saturday Night
Patchy frost after 3am. Otherwise, mostly clear, with a low around 34. West wind 6 to 13 mph, with gusts as high as 22 mph.
Sunday
Patchy frost before 8am. Otherwise, sunny, with a high near 55. West northwest wind 6 to 14 mph, with gusts as high as 23 mph.
Sunday Night
Mostly clear, with a low around 35.
Monday
Sunny, with a high near 63.
Monday Night
Partly cloudy, with a low around 49.
Tuesday
Mostly sunny, with a high near 73.
Tuesday Night
Mostly clear, with a low around 52.
Wednesday
Mostly sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lacon IL
 41.02°N 89.39°W (Elev. 515 ft)
Last Update:
12:36 pm CDT Apr 16, 2026
Forecast Valid:
1pm CDT Apr 16, 2026-6pm CDT Apr 22, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation