Severe Thunderstorms and Heavy Rainfall Today from the Central Plains into the Tennessee Valley

Severe thunderstorms capable of damaging winds will be possible from the Ozark Plateau east into portions of the Southeast today. Rounds of heavy thunderstorms ahead of a slow moving front will continue locally heavy rainfall and scattered flash flooding potential from the Ozarks to the Ohio and Tennessee Valleys today. Read More >

Current conditions at

De Kalb Taylor Municipal Airport (KDKB)

Lat: 41.93°NLon: 88.71°WElev: 909ft.

Fair

63°F

17°C

Humidity 83%
Wind Speed N 5 mph
Barometer 30.16 in
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 12 Jul 1:55 am CDT
Extended Forecast for

Cortland IL

  • Overnight

    Overnight: Mostly clear, with a low around 64. North northeast wind around 5 mph.

    Low: 64 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 85. Calm wind becoming northeast around 5 mph in the morning. Winds could gust as high as 10 mph.

    High: 85 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 64. East northeast wind around 5 mph becoming calm  in the evening.

    Low: 64 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 89. Heat index values as high as 95. Calm wind becoming north northwest around 5 mph in the morning.

    High: 89 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 71. Southeast wind around 5 mph becoming calm.

    Low: 71 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 64. North northeast wind around 5 mph.
Sunday
Sunny, with a high near 85. Calm wind becoming northeast around 5 mph in the morning. Winds could gust as high as 10 mph.
Sunday Night
Clear, with a low around 64. East northeast wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 89. Heat index values as high as 95. Calm wind becoming north northwest around 5 mph in the morning.
Monday Night
Clear, with a low around 71. Southeast wind around 5 mph becoming calm.
Tuesday
Sunny, with a high near 93.
Tuesday Night
Mostly clear, with a low around 72.
Wednesday
Sunny, with a high near 92.
Wednesday Night
Mostly clear, with a low around 68.
Thursday
Sunny, with a high near 89.
Thursday Night
Partly cloudy, with a low around 68.
Friday
Mostly sunny, with a high near 89.
Friday Night
Partly cloudy, with a low around 69.
Saturday
Mostly sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
Cortland IL
 41.94°N 88.7°W
1:21 am CDT Jul 12, 2026
2am CDT Jul 12, 2026-6pm CDT Jul 18, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database