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

Hazardous Weather Conditions

Current conditions at

Rochelle, Rochelle Municipal-Koritz Field Airport (KRPJ)

Lat: 41.89°NLon: 89.08°WElev: 768ft.

Fog/Mist

39°F

4°C

Humidity 95%
Wind Speed E 3 mph
Barometer 30.02 in
Dewpoint 37°F (3°C)
Visibility 3.00 mi
Last update 4 Mar 9:15 pm CST
Extended Forecast for

De Kalb IL

  • Tonight

    Tonight: Isolated showers. Patchy fog. Otherwise, cloudy, with a low around 40. Northeast wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 20%.

    Low: 40 °F

    Isolated
    Showers and
    Patchy Fog

  • Thursday

    Thursday: Scattered showers before 9am. Areas of fog before 3pm. Otherwise, cloudy, with a high near 49. Northeast wind around 5 mph. Chance of precipitation is 30%.

    High: 49 °F

    Scattered
    Showers and
    Areas Fog
    then Patchy
    Fog

  • Thursday Night

    Thursday Night: Scattered showers after 3am. Patchy fog. Otherwise, cloudy, with a low around 42. Southeast wind 5 to 10 mph. Chance of precipitation is 30%.

    Low: 42 °F

    Patchy Fog
    then
    Scattered
    Showers and
    Patchy Fog

  • Friday

    Friday: Showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Patchy fog before noon. High near 72. Breezy, with a south southwest wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.

    High: 72 °F

    Showers and
    Patchy Fog

  • Friday Night

    Friday Night: Showers and thunderstorms likely before midnight, then showers and possibly a thunderstorm between midnight and 3am, then showers after 3am. Low around 49. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.

    Low: 49 °F

    Showers and
    Breezy

  • Saturday

    Saturday: A 30 percent chance of showers before noon. Mostly cloudy, with a high near 56.

    High: 56 °F

    Chance
    Showers then
    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 60. Breezy.

    High: 60 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

Detailed Forecast

Tonight
Isolated showers. Patchy fog. Otherwise, cloudy, with a low around 40. Northeast wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 20%.
Thursday
Scattered showers before 9am. Areas of fog before 3pm. Otherwise, cloudy, with a high near 49. Northeast wind around 5 mph. Chance of precipitation is 30%.
Thursday Night
Scattered showers after 3am. Patchy fog. Otherwise, cloudy, with a low around 42. Southeast wind 5 to 10 mph. Chance of precipitation is 30%.
Friday
Showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Patchy fog before noon. High near 72. Breezy, with a south southwest wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.
Friday Night
Showers and thunderstorms likely before midnight, then showers and possibly a thunderstorm between midnight and 3am, then showers after 3am. Low around 49. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
Saturday
A 30 percent chance of showers before noon. Mostly cloudy, with a high near 56.
Saturday Night
Mostly clear, with a low around 34.
Sunday
Sunny, with a high near 60. Breezy.
Sunday Night
Mostly clear, with a low around 43.
Monday
Sunny, with a high near 70. Breezy.
Monday Night
A chance of showers. Partly cloudy, with a low around 48.
Tuesday
Showers likely. Mostly cloudy, with a high near 63. Breezy.
Tuesday Night
Showers. Mostly cloudy, with a low around 35. Breezy.
Wednesday
A chance of rain and snow showers. Mostly cloudy, with a high near 44. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
De Kalb IL
 41.92°N 88.76°W
Last Update:
8:36 pm CST Mar 4, 2026
Forecast Valid:
9pm CST Mar 4, 2026-6pm CDT Mar 11, 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