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

66°F

19°C

Humidity 68%
Wind Speed S 20 G 25 mph
Barometer 29.68 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 16 Jun 9:15 am CDT
Extended Forecast for

Cortland IL

  • Today

    Today: A slight chance of showers before 1pm, then a slight chance of showers and thunderstorms between 1pm and 2pm. Mostly sunny, with a high near 71. Breezy, with a south southwest wind 15 to 20 mph becoming west in the afternoon. Winds could gust as high as 35 mph. Chance of precipitation is 20%.

    High: 71 °F

    Breezy.
    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 54. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 54 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers and thunderstorms. Some of the storms could be severe and produce heavy rainfall. High near 71. Breezy, with a south southwest wind 5 to 10 mph becoming south southeast 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    High: 71 °F

    Severe
    Thunderstorms
    and Breezy

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely before 10pm, then showers likely between 10pm and 1am. Partly cloudy, with a low around 59. North wind 10 to 15 mph becoming west in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 60%.

    Low: 59 °F

    T-storms
    Likely then
    Showers
    Likely

  • Thursday

    Thursday: Mostly sunny, with a high near 72. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 72 °F

    Partly Sunny
    and Breezy
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

Detailed Forecast

Today
A slight chance of showers before 1pm, then a slight chance of showers and thunderstorms between 1pm and 2pm. Mostly sunny, with a high near 71. Breezy, with a south southwest wind 15 to 20 mph becoming west in the afternoon. Winds could gust as high as 35 mph. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 54. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Wednesday
Showers and thunderstorms. Some of the storms could be severe and produce heavy rainfall. High near 71. Breezy, with a south southwest wind 5 to 10 mph becoming south southeast 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Wednesday Night
Showers and thunderstorms likely before 10pm, then showers likely between 10pm and 1am. Partly cloudy, with a low around 59. North wind 10 to 15 mph becoming west in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 60%.
Thursday
Mostly sunny, with a high near 72. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Thursday Night
Mostly clear, with a low around 55.
Juneteenth
Sunny, with a high near 74.
Friday Night
Mostly clear, with a low around 54.
Saturday
Mostly sunny, with a high near 77.
Saturday Night
A chance of showers after 1am. Mostly cloudy, with a low around 59.
Sunday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 76.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60.
Monday
Partly sunny, with a high near 77.
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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:
9:17 am CDT Jun 16, 2026
Forecast Valid:
9am CDT Jun 16, 2026-6pm CDT Jun 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation