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.

Overcast

41°F

5°C

Humidity 70%
Wind Speed Calm
Barometer 30.12 in
Dewpoint 32°F (0°C)
Visibility 7.00 mi
Last update 3 Mar 12:35 pm CST
Extended Forecast for

De Kalb IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 43. Calm wind.

    High: 43 °F

    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 32. Calm wind becoming east northeast around 5 mph after midnight. Winds could gust as high as 10 mph.

    Low: 32 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers after 3pm. Partly sunny, with a high near 48. East wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 48 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers before midnight, then showers likely and possibly a thunderstorm between midnight and 3am, then showers likely after 3am. Patchy fog after midnight. Otherwise, cloudy, with a low around 39. East wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 70%.

    Low: 39 °F

    Chance
    Showers then
    Showers
    Likely and
    Patchy Fog

  • Thursday

    Thursday: Showers likely, mainly before noon. Patchy fog before 8am. Otherwise, cloudy, with a high near 52. East northeast wind around 5 mph becoming west northwest in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 70%.

    High: 52 °F

    Showers
    Likely and
    Patchy Fog
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after midnight. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 69. Chance of precipitation is 90%.

    High: 69 °F

    Showers

  • Friday Night

    Friday Night: Showers. Mostly cloudy, with a low around 49.

    Low: 49 °F

    Showers

  • Saturday

    Saturday: A chance of showers before noon. Mostly cloudy, with a high near 60.

    High: 60 °F

    Chance
    Showers then
    Partly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 43. Calm wind.
Tonight
Partly cloudy, with a low around 32. Calm wind becoming east northeast around 5 mph after midnight. Winds could gust as high as 10 mph.
Wednesday
A 20 percent chance of showers after 3pm. Partly sunny, with a high near 48. East wind 5 to 10 mph, with gusts as high as 15 mph.
Wednesday Night
A chance of showers before midnight, then showers likely and possibly a thunderstorm between midnight and 3am, then showers likely after 3am. Patchy fog after midnight. Otherwise, cloudy, with a low around 39. East wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 70%.
Thursday
Showers likely, mainly before noon. Patchy fog before 8am. Otherwise, cloudy, with a high near 52. East northeast wind around 5 mph becoming west northwest in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 70%.
Thursday Night
A 30 percent chance of showers after midnight. Mostly cloudy, with a low around 41.
Friday
Showers and possibly a thunderstorm. High near 69. Chance of precipitation is 90%.
Friday Night
Showers. Mostly cloudy, with a low around 49.
Saturday
A chance of showers before noon. Mostly cloudy, with a high near 60.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Sunny, with a high near 61. Breezy.
Sunday Night
Mostly clear, with a low around 41.
Monday
Sunny, with a high near 67.
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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:
12:21 pm CST Mar 3, 2026
Forecast Valid:
12pm CST Mar 3, 2026-6pm CDT Mar 9, 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