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.

Fog/Mist

42°F

6°C

Humidity 90%
Wind Speed W 20 G 23 mph
Barometer 29.80 in
Dewpoint 39°F (4°C)
Visibility 4.00 mi
Wind Chill33°F (1°C)
Last update 7 Mar 11:35 am CST
Extended Forecast for

De Kalb IL

  • Today

    Today: A slight chance of drizzle before 1pm. Cloudy, with a temperature falling to around 41 by 4pm. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 58 °F⇓

    Slight Chance
    Drizzle and
    Breezy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 33. West northwest wind 5 to 15 mph becoming southwest after midnight. Winds could gust as high as 20 mph.

    Low: 33 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 61. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 61 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 44. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 44 °F

    Mostly Clear
    and Breezy

  • Monday

    Monday: Sunny, with a high near 70. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 70 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 43.

    Low: 43 °F

    Clear

  • Tuesday

    Tuesday: Showers likely, mainly after noon. Mostly sunny, with a high near 64. Chance of precipitation is 70%.

    High: 64 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers. Cloudy, with a low around 36.

    Low: 36 °F

    Showers

  • Wednesday

    Wednesday: A chance of rain showers before noon, then a chance of rain and snow showers. Cloudy, with a high near 46. Breezy.

    High: 46 °F

    Chance
    Showers then
    Chance
    Rain/Snow and
    Breezy

Detailed Forecast

Today
A slight chance of drizzle before 1pm. Cloudy, with a temperature falling to around 41 by 4pm. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 33. West northwest wind 5 to 15 mph becoming southwest after midnight. Winds could gust as high as 20 mph.
Sunday
Sunny, with a high near 61. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly clear, with a low around 44. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Monday
Sunny, with a high near 70. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
Clear, with a low around 43.
Tuesday
Showers likely, mainly after noon. Mostly sunny, with a high near 64. Chance of precipitation is 70%.
Tuesday Night
Showers. Cloudy, with a low around 36.
Wednesday
A chance of rain showers before noon, then a chance of rain and snow showers. Cloudy, with a high near 46. Breezy.
Wednesday Night
Partly cloudy, with a low around 26.
Thursday
Mostly sunny, with a high near 46.
Thursday Night
A chance of rain and snow showers. Cloudy, with a low around 34. Breezy.
Friday
Mostly cloudy, with a high near 54. 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:
11:11 am CST Mar 7, 2026
Forecast Valid:
11am CST Mar 7, 2026-6pm CDT Mar 13, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation