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

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 26. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 26 °F

    Mostly Cloudy

  • Tonight

    Tonight: Snow likely, mainly before 3am. Cloudy, with a steady temperature around 20. South southwest wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 20 °F

    Snow Likely

  • Monday

    Monday: A slight chance of flurries between 9am and 3pm. Partly sunny, with a high near 27. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 27 °F

    Slight Chance
    Flurries

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 14. Northwest wind around 5 mph.

    Low: 14 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 24. North wind around 5 mph, with gusts as high as 10 mph.

    High: 24 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 7.

    Low: 7 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 25.

    High: 25 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 12.

    Low: 12 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 33.

    High: 33 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 26. South wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
Snow likely, mainly before 3am. Cloudy, with a steady temperature around 20. South southwest wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Monday
A slight chance of flurries between 9am and 3pm. Partly sunny, with a high near 27. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Monday Night
Mostly cloudy, with a low around 14. Northwest wind around 5 mph.
Tuesday
Mostly sunny, with a high near 24. North wind around 5 mph, with gusts as high as 10 mph.
Tuesday Night
Mostly clear, with a low around 7.
Wednesday
Sunny, with a high near 25.
Wednesday Night
Partly cloudy, with a low around 12.
Thursday
Partly sunny, with a high near 33.
Thursday Night
A chance of snow before midnight. Mostly cloudy, with a low around 26.
Friday
Partly sunny, with a high near 34.
Friday Night
Partly cloudy, with a low around 10.
Saturday
Mostly sunny, with a high near 24.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Cortland IL
 41.92°N 88.7°W
Last Update:
12:46 pm CST Feb 1, 2026
Forecast Valid:
1pm CST Feb 1, 2026-6pm CST Feb 7, 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