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

Logan County Airport (KAAA)

Lat: 40.16°NLon: 89.34°WElev: 591ft.

Fair

52°F

11°C

Humidity 55%
Wind Speed Calm
Barometer 30.07 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 9 Nov 5:55 pm CST
Extended Forecast for

Mc Lean IL

  • Tonight

    Tonight: Mostly clear, with a low around 45. South southwest wind 5 to 8 mph becoming west after midnight. Winds could gust as high as 15 mph.

    Low: 45 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 65. West northwest wind around 5 mph becoming calm in the morning.

    High: 65 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 42. Calm wind becoming southeast around 5 mph after midnight.

    Low: 42 °F

    Increasing
    Clouds

  • Veterans Day

    Veterans Day: A 50 percent chance of showers after noon. Partly sunny, with a high near 61. Southeast wind 5 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 61 °F

    Partly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 39. North northwest wind 13 to 15 mph, with gusts as high as 21 mph.

    Low: 39 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 47. North northwest wind 14 to 18 mph, with gusts as high as 24 mph.

    High: 47 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 28. North northwest wind 10 to 16 mph, with gusts as high as 21 mph.

    Low: 28 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 44.

    High: 44 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 45. South southwest wind 5 to 8 mph becoming west after midnight. Winds could gust as high as 15 mph.
Tuesday
Sunny, with a high near 65. West northwest wind around 5 mph becoming calm in the morning.
Tuesday Night
Increasing clouds, with a low around 42. Calm wind becoming southeast around 5 mph after midnight.
Veterans Day
A 50 percent chance of showers after noon. Partly sunny, with a high near 61. Southeast wind 5 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
Mostly cloudy, with a low around 39. North northwest wind 13 to 15 mph, with gusts as high as 21 mph.
Thursday
Partly sunny, with a high near 47. North northwest wind 14 to 18 mph, with gusts as high as 24 mph.
Thursday Night
Mostly cloudy, with a low around 28. North northwest wind 10 to 16 mph, with gusts as high as 21 mph.
Friday
Mostly sunny, with a high near 44.
Friday Night
Mostly clear, with a low around 25.
Saturday
Sunny, with a high near 48.
Saturday Night
Mostly clear, with a low around 30.
Sunday
Sunny, with a high near 53.
Sunday Night
Partly cloudy, with a low around 37.
Monday
Mostly sunny, with a high near 57.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mc Lean IL
 40.31°N 89.17°W (Elev. 699 ft)
Last Update:
12:51 pm CST Nov 9, 2026
Forecast Valid:
6pm CST Nov 9, 2026-6pm CST Nov 16, 2026
 
Forecast Discussion
 
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Additional Resources

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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