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

Hazardous Weather Conditions

Current conditions at

De Kalb Taylor Municipal Airport (KDKB)

Lat: 41.93°NLon: 88.71°WElev: 909ft.

Fog/Mist

21°F

-6°C

Humidity 97%
Wind Speed S 18 mph
Barometer 29.94 in
Dewpoint 20°F (-7°C)
Visibility 5.00 mi
Wind Chill6°F (-14°C)
Last update 3 Dec 2:55 am CST
Extended Forecast for

Cortland IL

  • Overnight

    Overnight: Patchy blowing snow. Cloudy, with a low around 20. South southwest wind around 15 mph, with gusts as high as 20 mph.

    Low: 20 °F

    Patchy
    Blowing Snow

  • Wednesday

    Wednesday: A chance of snow between 10am and 3pm. Patchy blowing snow before 9am. Cloudy, with a high near 30. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 40%.

    High: 30 °F

    Chance Snow
    and Patchy
    Blowing Snow

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around -3. Wind chill values as low as -17. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: -3 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny and cold, with a high near 10. Wind chill values as low as -18. North northwest wind 5 to 10 mph becoming south southwest in the afternoon.

    High: 10 °F

    Cold

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -8. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: -8 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 23.

    High: 23 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 14.

    Low: 14 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 25.

    High: 25 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A chance of snow. Mostly cloudy, with a low around 12.

    Low: 12 °F

    Chance Snow

Detailed Forecast

Overnight
Patchy blowing snow. Cloudy, with a low around 20. South southwest wind around 15 mph, with gusts as high as 20 mph.
Wednesday
A chance of snow between 10am and 3pm. Patchy blowing snow before 9am. Cloudy, with a high near 30. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 40%.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around -3. Wind chill values as low as -17. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday
Sunny and cold, with a high near 10. Wind chill values as low as -18. North northwest wind 5 to 10 mph becoming south southwest in the afternoon.
Thursday Night
Partly cloudy, with a low around -8. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Friday
Partly sunny, with a high near 23.
Friday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 14.
Saturday
Mostly cloudy, with a high near 25.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 12.
Sunday
A chance of snow. Mostly cloudy, with a high near 26.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 10.
Monday
Partly sunny, with a high near 24.
Monday Night
A chance of snow. Mostly cloudy, with a low around 15.
Tuesday
Mostly cloudy, with a high near 30.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Cortland IL
 41.92°N 88.67°W
Last Update:
3:11 am CST Dec 3, 2025
Forecast Valid:
3am CST Dec 3, 2025-6pm CST Dec 9, 2025
 
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Additional Resources

Radar & Satellite Image

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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