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

De Kalb Taylor Municipal Airport (KDKB)

Lat: 41.93°NLon: 88.71°WElev: 909ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Cortland IL

  • Today

    Today: Sunny, with a high near 33. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 33 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 18. West northwest wind 5 to 10 mph becoming light north northwest after midnight. Winds could gust as high as 15 mph.

    Low: 18 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 42. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 15 mph.

    High: 42 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 28. Southwest wind 5 to 10 mph.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 59. Breezy, with a south southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon.

    High: 59 °F

    Sunny then
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

  • Saturday

    Saturday: A 40 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 37.

    High: 37 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 18.

    Low: 18 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of snow after noon. Partly sunny, with a high near 32.

    High: 32 °F

    Partly Sunny
    then Chance
    Snow

Detailed Forecast

Today
Sunny, with a high near 33. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Partly cloudy, with a low around 18. West northwest wind 5 to 10 mph becoming light north northwest after midnight. Winds could gust as high as 15 mph.
Thursday
Mostly sunny, with a high near 42. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 15 mph.
Thursday Night
Mostly clear, with a low around 28. Southwest wind 5 to 10 mph.
Friday
Sunny, with a high near 59. Breezy, with a south southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 28.
Saturday
A 40 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 37.
Saturday Night
Mostly cloudy, with a low around 18.
Sunday
A chance of snow after noon. Partly sunny, with a high near 32.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 20.
Monday
Partly sunny, with a high near 34.
Monday Night
Mostly cloudy, with a low around 19.
Tuesday
A chance of rain and snow. Partly sunny, with a high near 38.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Cortland IL
 41.94°N 88.7°W
Last Update:
3:01 am CST Feb 25, 2026
Forecast Valid:
7am CST Feb 25, 2026-6pm CST Mar 3, 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