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

Lewis University Airport (KLOT)

Lat: 41.6°NLon: 88.1°WElev: 669ft.

Fair

30°F

-1°C

Humidity 43%
Wind Speed W 10 mph
Barometer 30.38 in
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 23 Feb 4:45 pm CST
Extended Forecast for

Frankfort IL

  • Tonight

    Tonight: Increasing clouds, with a low around 17. Light and variable wind becoming south 5 to 10 mph after midnight.

    Low: 17 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 42. Breezy, with a south wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 40 mph.

    High: 42 °F

    Mostly Cloudy
    and Breezy

  • Tuesday Night

    Tuesday Night: Cloudy during the early evening, then gradual clearing, with a low around 24. West wind around 15 mph, with gusts as high as 25 mph.

    Low: 24 °F

    Gradual
    Clearing

  • Wednesday

    Wednesday: Sunny, with a high near 36. West northwest wind 5 to 15 mph.

    High: 36 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 25. West northwest wind around 5 mph becoming east northeast after midnight. Winds could gust as high as 15 mph.

    Low: 25 °F

    Chance Snow

  • Thursday

    Thursday: A 30 percent chance of snow before noon. Mostly sunny, with a high near 40.

    High: 40 °F

    Chance Snow
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 26.

    Low: 26 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 54.

    High: 54 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 17. Light and variable wind becoming south 5 to 10 mph after midnight.
Tuesday
Mostly cloudy, with a high near 42. Breezy, with a south wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 40 mph.
Tuesday Night
Cloudy during the early evening, then gradual clearing, with a low around 24. West wind around 15 mph, with gusts as high as 25 mph.
Wednesday
Sunny, with a high near 36. West northwest wind 5 to 15 mph.
Wednesday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 25. West northwest wind around 5 mph becoming east northeast after midnight. Winds could gust as high as 15 mph.
Thursday
A 30 percent chance of snow before noon. Mostly sunny, with a high near 40.
Thursday Night
Mostly clear, with a low around 26.
Friday
Sunny, with a high near 54.
Friday Night
Mostly clear, with a low around 32.
Saturday
Partly sunny, with a high near 45.
Saturday Night
Mostly cloudy, with a low around 23.
Sunday
A chance of rain and snow. Partly sunny, with a high near 33.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 22.
Monday
A chance of snow. Partly sunny, with a high near 34.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Frankfort IL
 41.49°N 87.85°W
Last Update:
4:46 pm CST Feb 23, 2026
Forecast Valid:
5pm CST Feb 23, 2026-6pm CST Mar 2, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation