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

Rochelle, Rochelle Municipal-Koritz Field Airport (KRPJ)

Lat: 41.89°NLon: 89.08°WElev: 768ft.

Fair

43°F

6°C

Humidity 76%
Wind Speed S 10 mph
Barometer 29.77 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 8 Mar 9:55 pm CDT
Extended Forecast for

De Kalb IL

  • Tonight

    Tonight: Mostly clear, with a low around 44. South southwest wind around 15 mph, with gusts as high as 30 mph.

    Low: 44 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 69. South southwest wind around 15 mph, with gusts as high as 20 mph.

    High: 69 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 51. South wind 5 to 10 mph.

    Low: 51 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 69. South southwest wind 5 to 15 mph becoming southeast in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 50%.

    High: 69 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 39. East wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%.

    Low: 39 °F

    Showers

  • Wednesday

    Wednesday: Rain showers likely before 1pm, then a chance of rain and snow showers. Some thunder is also possible. Cloudy, with a high near 45. Breezy. Chance of precipitation is 70%.

    High: 45 °F

    Breezy.
    Showers
    Likely then
    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 25. Blustery.

    Low: 25 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 45.

    High: 45 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers. Cloudy, with a low around 37. Breezy.

    Low: 37 °F

    Chance
    Showers and
    Breezy

Detailed Forecast

Tonight
Mostly clear, with a low around 44. South southwest wind around 15 mph, with gusts as high as 30 mph.
Monday
Sunny, with a high near 69. South southwest wind around 15 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 51. South wind 5 to 10 mph.
Tuesday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 69. South southwest wind 5 to 15 mph becoming southeast in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 50%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 39. East wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%.
Wednesday
Rain showers likely before 1pm, then a chance of rain and snow showers. Some thunder is also possible. Cloudy, with a high near 45. Breezy. Chance of precipitation is 70%.
Wednesday Night
Mostly cloudy, with a low around 25. Blustery.
Thursday
Mostly sunny, with a high near 45.
Thursday Night
A chance of showers. Cloudy, with a low around 37. Breezy.
Friday
Partly sunny, with a high near 48. Breezy.
Friday Night
Mostly cloudy, with a low around 28.
Saturday
Cloudy, with a high near 44.
Saturday Night
A chance of snow showers. Cloudy, with a low around 31.
Sunday
Rain and snow showers likely. Cloudy, with a high near 48.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
De Kalb IL
 41.92°N 88.76°W
Last Update:
8:31 pm CDT Mar 8, 2026
Forecast Valid:
10pm CDT Mar 8, 2026-6pm CDT Mar 15, 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