National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

De Kalb Taylor Municipal Airport (KDKB)

Lat: 41.93°NLon: 88.71°WElev: 909ft.

Overcast

54°F

12°C

Humidity 86%
Wind Speed SW 12 G 18 mph
Barometer 29.68 in
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 4 Nov 2:35 pm CST
Extended Forecast for

Cortland IL

  • This Afternoon

    This Afternoon: A slight chance of drizzle or sprinkles. Cloudy, with a steady temperature around 54. Southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 54 °F

    Slight Chance
    Drizzle

  • Tonight

    Tonight: A slight chance of drizzle or sprinkles before 10pm. Cloudy, with a low around 45. Southwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 45 °F

    Slight Chance
    Drizzle then
    Cloudy

  • Thursday

    Thursday: A 50 percent chance of rain, mainly after 3pm. Cloudy, with a high near 54. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.

    High: 54 °F

    Slight Chance
    Rain then
    Chance Rain

  • Thursday Night

    Thursday Night: A 30 percent chance of rain before 7pm. Mostly cloudy, with a low around 38. North wind around 10 mph, with gusts as high as 20 mph.

    Low: 38 °F

    Chance Rain
    then Mostly
    Cloudy

  • Friday

    Friday: Partly sunny, with a high near 48. North wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 48 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 50.

    High: 50 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

Detailed Forecast

This Afternoon
A slight chance of drizzle or sprinkles. Cloudy, with a steady temperature around 54. Southwest wind around 15 mph, with gusts as high as 25 mph.
Tonight
A slight chance of drizzle or sprinkles before 10pm. Cloudy, with a low around 45. Southwest wind around 15 mph, with gusts as high as 25 mph.
Thursday
A 50 percent chance of rain, mainly after 3pm. Cloudy, with a high near 54. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.
Thursday Night
A 30 percent chance of rain before 7pm. Mostly cloudy, with a low around 38. North wind around 10 mph, with gusts as high as 20 mph.
Friday
Partly sunny, with a high near 48. North wind 10 to 15 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 29.
Saturday
Sunny, with a high near 50.
Saturday Night
Mostly clear, with a low around 31.
Sunday
Sunny, with a high near 57.
Sunday Night
Mostly clear, with a low around 34.
Monday
Sunny, with a high near 60.
Monday Night
Clear, with a low around 39.
Tuesday
Sunny, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Cortland IL
 41.92°N 88.7°W
Last Update:
1:06 pm CST Nov 4, 2026
Forecast Valid:
2pm CST Nov 4, 2026-6pm CST Nov 10, 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