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.

Partly Cloudy

54°F

12°C

Humidity 49%
Wind Speed SE 12 mph
Barometer 30.31 in
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 11 Apr 3:55 pm CDT
Extended Forecast for

Cortland IL

  • Tonight

    Tonight: A chance of showers, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 50. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

    Low: 50 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 76. Breezy, with a south southwest wind 15 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 40%.

    High: 76 °F

    Breezy.
    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Low around 60. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 60 °F

    Showers and
    Breezy

  • Monday

    Monday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 76. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    High: 76 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 65 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 81.

    High: 81 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Low around 62. Chance of precipitation is 80%.

    Low: 62 °F

    Showers

  • Wednesday

    Wednesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 76.

    High: 76 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 56.

    Low: 56 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A chance of showers, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 50. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Sunday
A chance of showers, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 76. Breezy, with a south southwest wind 15 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 40%.
Sunday Night
Showers and possibly a thunderstorm. Low around 60. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Monday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 76. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South wind around 15 mph, with gusts as high as 25 mph.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 81.
Tuesday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Low around 62. Chance of precipitation is 80%.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 76.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 56.
Thursday
A chance of showers before 1pm. Partly sunny, with a high near 76.
Thursday Night
Mostly clear, with a low around 55.
Friday
A chance of showers. Mostly sunny, with a high near 79.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 46.
Saturday
A chance of showers. Partly sunny, with a high near 60. Breezy.
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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:
3:41 pm CDT Apr 11, 2026
Forecast Valid:
4pm CDT Apr 11, 2026-6pm CDT Apr 18, 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