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 and Windy

77°F

25°C

Humidity 61%
Wind Speed S 26 G 33 mph
Barometer 29.62 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 17 Apr 5:35 pm CDT
Extended Forecast for

De Kalb IL

Flood Watch until April 18, 05:00am
Tornado Watch April 17, 05:59pm until April 17, 08:00pm
Click here for hazard details and duration
Flood Watch
Tornado Watch
  •  
    Flood Watch until April 18, 05:00am
    Tornado Watch April 17, 05:59pm until April 17, 08:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 81 °F

    Severe
    Thunderstorms
    and Breezy

  • Tonight

    Tonight: Showers and thunderstorms before 2am, then a chance of showers. Some of the storms could be severe. Low around 41. Breezy, with a south wind 15 to 20 mph becoming west northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    Low: 41 °F

    Breezy.
    Severe
    Thunderstorms
    then Showers
    Likely

  • Saturday

    Saturday: A 30 percent chance of showers before 7am. Mostly sunny, with a high near 50. Breezy, with a west northwest wind around 20 mph, with gusts as high as 30 mph.

    High: 50 °F

    Breezy.
    Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Areas of frost after 2am. Otherwise, mostly clear, with a low around 32. West northwest wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 32 °F

    Mostly Clear
    then Areas
    Frost

  • Sunday

    Sunday: Areas of frost before 8am. Otherwise, mostly sunny, with a high near 50. West southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.

    High: 50 °F

    Areas Frost
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Widespread frost, mainly after 2am. Otherwise, mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear
    then Frost

  • Monday

    Monday: Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 55.

    High: 55 °F

    Frost then
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms. Some of the storms could be severe. Partly sunny, with a high near 81. Breezy, with a south wind around 25 mph, with gusts as high as 35 mph.
Tonight
Showers and thunderstorms before 2am, then a chance of showers. Some of the storms could be severe. Low around 41. Breezy, with a south wind 15 to 20 mph becoming west northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Saturday
A 30 percent chance of showers before 7am. Mostly sunny, with a high near 50. Breezy, with a west northwest wind around 20 mph, with gusts as high as 30 mph.
Saturday Night
Areas of frost after 2am. Otherwise, mostly clear, with a low around 32. West northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Sunday
Areas of frost before 8am. Otherwise, mostly sunny, with a high near 50. West southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.
Sunday Night
Widespread frost, mainly after 2am. Otherwise, mostly clear, with a low around 30.
Monday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 55.
Monday Night
Partly cloudy, with a low around 44.
Tuesday
Mostly sunny, with a high near 73.
Tuesday Night
Partly cloudy, with a low around 47.
Wednesday
Sunny, with a high near 72.
Wednesday Night
Partly cloudy, with a low around 53.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 59.
Friday
A chance of showers. Mostly cloudy, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
De Kalb IL
 41.92°N 88.76°W
Last Update:
5:21 pm CDT Apr 17, 2026
Forecast Valid:
5pm CDT Apr 17, 2026-6pm CDT Apr 24, 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