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.

Light Rain

66°F

19°C

Humidity 100%
Wind Speed E 14 G 20 mph
Barometer 29.74 in
Dewpoint 66°F (19°C)
Visibility 7.00 mi
Last update 1 Aug 3:55 am CDT
Extended Forecast for

Cortland IL

  • Overnight

    Overnight: Showers and possibly a thunderstorm. Low around 65. East wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 65 °F

    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 71. Breezy, with an east northeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 71 °F

    Showers and
    Breezy

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers after 1am. Mostly cloudy, with a low around 63. Breezy, with a north northeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    Showers and
    Breezy

  • Sunday

    Sunday: Cloudy, then gradual clearing during the afternoon, with a high near 77. North northeast wind around 15 mph, with gusts as high as 25 mph.

    High: 77 °F

    Clearing Late

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 58. North northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 58 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Low around 65. East wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Showers and possibly a thunderstorm. High near 71. Breezy, with an east northeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers after 1am. Mostly cloudy, with a low around 63. Breezy, with a north northeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Sunday
Cloudy, then gradual clearing during the afternoon, with a high near 77. North northeast wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 58. North northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Monday
Sunny, with a high near 79.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Sunny, with a high near 81.
Tuesday Night
Partly cloudy, with a low around 63.
Wednesday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 63.
Thursday
A chance of showers. Partly sunny, with a high near 81.
Thursday Night
Partly cloudy, with a low around 64.
Friday
Mostly sunny, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Cortland IL
 41.92°N 88.67°W
Last Update:
3:01 am CDT Aug 1, 2026
Forecast Valid:
4am CDT Aug 1, 2026-6pm CDT Aug 7, 2026
 
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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