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 with Haze

32°F

0°C

Humidity 61%
Wind Speed N 5 mph
Barometer 30.08 in
Dewpoint 20°F (-7°C)
Visibility 5.00 mi
Wind Chill27°F (-3°C)
Last update 13 Mar 10:55 pm CDT
Extended Forecast for

De Kalb IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 28. North northwest wind 5 to 10 mph.

    Low: 28 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of snow, mixing with rain after 3pm, then gradually ending. Cloudy, with a high near 41. Light east northeast wind becoming east southeast 10 to 15 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

    High: 41 °F

    Slight Chance
    Snow then
    Slight Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: A slight chance of rain before 8pm, then a slight chance of snow between 8pm and 10pm, then a chance of rain after 10pm. Cloudy, with a low around 35. East southeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    Low: 35 °F

    Chance
    Rain/Snow
    then Chance
    Rain

  • Sunday

    Sunday: Rain likely before 1pm, then showers and possibly a thunderstorm between 1pm and 4pm, then rain after 4pm. High near 59. Breezy, with a south wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 90%.

    High: 59 °F

    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Rain before 10pm, then snow, possibly mixed with rain between 10pm and 1am, then snow after 1am. Patchy blowing snow after 1am. Low around 21. Windy, with a west southwest wind 20 to 25 mph becoming north northwest 25 to 30 mph after midnight. Winds could gust as high as 45 mph. Chance of precipitation is 100%.

    Low: 21 °F

    Rain/Snow and
    Patchy
    Blowing Snow

  • Monday

    Monday: Snow likely, mainly before 1pm. Areas of blowing snow. Cloudy, with a high near 22. Windy. Chance of precipitation is 70%.

    High: 22 °F

    Snow Likely
    and Areas
    Blowing Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 6. Blustery.

    Low: 6 °F

    Mostly Cloudy
    and Blustery

  • Tuesday

    Tuesday: Mostly sunny, with a high near 23.

    High: 23 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of snow showers. Mostly cloudy, with a low around 16.

    Low: 16 °F

    Chance Snow
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 28. North northwest wind 5 to 10 mph.
Saturday
A slight chance of snow, mixing with rain after 3pm, then gradually ending. Cloudy, with a high near 41. Light east northeast wind becoming east southeast 10 to 15 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Saturday Night
A slight chance of rain before 8pm, then a slight chance of snow between 8pm and 10pm, then a chance of rain after 10pm. Cloudy, with a low around 35. East southeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Sunday
Rain likely before 1pm, then showers and possibly a thunderstorm between 1pm and 4pm, then rain after 4pm. High near 59. Breezy, with a south wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 90%.
Sunday Night
Rain before 10pm, then snow, possibly mixed with rain between 10pm and 1am, then snow after 1am. Patchy blowing snow after 1am. Low around 21. Windy, with a west southwest wind 20 to 25 mph becoming north northwest 25 to 30 mph after midnight. Winds could gust as high as 45 mph. Chance of precipitation is 100%.
Monday
Snow likely, mainly before 1pm. Areas of blowing snow. Cloudy, with a high near 22. Windy. Chance of precipitation is 70%.
Monday Night
Mostly cloudy, with a low around 6. Blustery.
Tuesday
Mostly sunny, with a high near 23.
Tuesday Night
A chance of snow showers. Mostly cloudy, with a low around 16.
Wednesday
Partly sunny, with a high near 43.
Wednesday Night
Mostly clear, with a low around 30.
Thursday
Mostly sunny, with a high near 52.
Thursday Night
Partly cloudy, with a low around 33.
Friday
Partly sunny, with a high near 52.
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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:
9:41 pm CDT Mar 13, 2026
Forecast Valid:
11pm CDT Mar 13, 2026-6pm CDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation