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

48°F

9°C

Humidity 89%
Wind Speed SE 6 mph
Barometer 30.02 in
Dewpoint 45°F (7°C)
Visibility 5.00 mi
Wind Chill45°F (7°C)
Last update 5 Mar 7:35 pm CST
Extended Forecast for

De Kalb IL

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms after 5am. Patchy fog. Otherwise, mostly cloudy, with a low around 42. Southeast wind around 5 mph, with gusts as high as 10 mph.

    Low: 42 °F

    Patchy Fog
    then Chance
    Showers and
    Areas Fog

  • Friday

    Friday: Showers and possibly a thunderstorm, mainly before noon, then a chance of showers and thunderstorms after noon. Areas of fog before noon. High near 70. Breezy, with a southeast wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 70 °F

    Showers and
    Areas Fog
    then Chance
    T-storms and
    Breezy

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 57. Breezy, with a south wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 57 °F

    Breezy.
    Chance
    T-storms then
    T-storms

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms before 9am. Mostly cloudy, with a high near 59. Breezy, with a southwest wind 15 to 20 mph becoming west northwest in the afternoon. Winds could gust as high as 30 mph.

    High: 59 °F

    Breezy.
    Chance
    Showers then
    Mostly Cloudy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 33. West wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 33 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 61. Breezy.

    High: 61 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms after 5am. Patchy fog. Otherwise, mostly cloudy, with a low around 42. Southeast wind around 5 mph, with gusts as high as 10 mph.
Friday
Showers and possibly a thunderstorm, mainly before noon, then a chance of showers and thunderstorms after noon. Areas of fog before noon. High near 70. Breezy, with a southeast wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 57. Breezy, with a south wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
A 30 percent chance of showers and thunderstorms before 9am. Mostly cloudy, with a high near 59. Breezy, with a southwest wind 15 to 20 mph becoming west northwest in the afternoon. Winds could gust as high as 30 mph.
Saturday Night
Partly cloudy, with a low around 33. West wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday
Sunny, with a high near 61. Breezy.
Sunday Night
Mostly clear, with a low around 46.
Monday
Sunny, with a high near 70.
Monday Night
Partly cloudy, with a low around 47.
Tuesday
Showers likely, mainly after noon. Partly sunny, with a high near 72.
Tuesday Night
Showers. Mostly cloudy, with a low around 43.
Wednesday
A chance of showers. Mostly cloudy, with a high near 55. Breezy.
Wednesday Night
Partly cloudy, with a low around 26.
Thursday
Mostly sunny, with a high near 47.
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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:
3:06 pm CST Mar 5, 2026
Forecast Valid:
7pm CST Mar 5, 2026-6pm CDT Mar 12, 2026
 
Forecast Discussion
 
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Additional Resources

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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