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.

Fair

85°F

29°C

Humidity 38%
Wind Speed S 16 G 21 mph
Barometer 30.05 in
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 4 Oct 4:15 pm CDT
Extended Forecast for

Cortland IL

  • Tonight

    Tonight: Mostly clear, with a low around 61. South wind around 10 mph, with gusts as high as 15 mph.

    Low: 61 °F

    Mostly Clear

  • Sunday

    Sunday: Patchy blowing dust after noon. Sunny, with a high near 85. Breezy, with a south southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 85 °F

    Sunny then
    Patchy
    Blowing Dust
    and Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 62. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 62 °F

    Mostly Clear

  • Monday

    Monday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 83. Southwest wind around 10 mph. Chance of precipitation is 40%.

    High: 83 °F

    Mostly Sunny
    then Chance
    Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 55. North wind 5 to 10 mph. Chance of precipitation is 80%.

    Low: 55 °F

    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm. Partly sunny, with a high near 67. Chance of precipitation is 30%.

    High: 67 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 61. South wind around 10 mph, with gusts as high as 15 mph.
Sunday
Patchy blowing dust after noon. Sunny, with a high near 85. Breezy, with a south southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly clear, with a low around 62. South wind around 10 mph, with gusts as high as 20 mph.
Monday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 83. Southwest wind around 10 mph. Chance of precipitation is 40%.
Monday Night
Showers and possibly a thunderstorm. Low around 55. North wind 5 to 10 mph. Chance of precipitation is 80%.
Tuesday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm. Partly sunny, with a high near 67. Chance of precipitation is 30%.
Tuesday Night
Partly cloudy, with a low around 44.
Wednesday
Sunny, with a high near 68.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Sunny, with a high near 70.
Thursday Night
Partly cloudy, with a low around 52.
Friday
Mostly sunny, with a high near 75.
Friday Night
Mostly clear, with a low around 50.
Saturday
Mostly sunny, with a high near 71.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Cortland IL
 41.94°N 88.7°W
Last Update:
4:11 pm CDT Oct 4, 2025
Forecast Valid:
4pm CDT Oct 4, 2025-6pm CDT Oct 11, 2025
 
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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