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

60°F

16°C

Humidity 100%
Wind Speed SW 5 mph
Barometer 29.93 in
Dewpoint 60°F (16°C)
Visibility 7.00 mi
Last update 25 Jun 1:35 am CDT
Extended Forecast for

Cortland IL

  • Overnight

    Overnight: Areas of fog. Otherwise, mostly cloudy, with a low around 60. West southwest wind around 5 mph.

    Low: 60 °F

    Areas Fog

  • Thursday

    Thursday: Mostly sunny, with a high near 78. West northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 78 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 57. North northwest wind around 5 mph becoming east after midnight. Winds could gust as high as 10 mph.

    Low: 57 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of showers, mainly between 11am and 4pm. Mostly cloudy, with a high near 74. East wind around 10 mph, with gusts as high as 20 mph.

    High: 74 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 10 percent chance of showers before 7pm. Mostly cloudy, with a low around 58. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 58 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy
    then Chance
    T-storms

  • Sunday

    Sunday: Partly sunny, with a high near 88.

    High: 88 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 74.

    Low: 74 °F

    Partly Cloudy

Detailed Forecast

Overnight
Areas of fog. Otherwise, mostly cloudy, with a low around 60. West southwest wind around 5 mph.
Thursday
Mostly sunny, with a high near 78. West northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 57. North northwest wind around 5 mph becoming east after midnight. Winds could gust as high as 10 mph.
Friday
A 30 percent chance of showers, mainly between 11am and 4pm. Mostly cloudy, with a high near 74. East wind around 10 mph, with gusts as high as 20 mph.
Friday Night
A 10 percent chance of showers before 7pm. Mostly cloudy, with a low around 58. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday
Mostly sunny, with a high near 80.
Saturday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64.
Sunday
Partly sunny, with a high near 88.
Sunday Night
Partly cloudy, with a low around 74.
Monday
Mostly sunny, with a high near 92.
Monday Night
Mostly clear, with a low around 75.
Tuesday
Mostly sunny, with a high near 93.
Tuesday Night
Mostly clear, with a low around 74.
Wednesday
Mostly sunny, with a high near 93.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Cortland IL
 41.92°N 88.67°W
Last Update:
1:29 am CDT Jun 25, 2026
Forecast Valid:
1am CDT Jun 25, 2026-6pm CDT Jul 1, 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