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.

Fair with Haze

38°F

3°C

Humidity 64%
Wind Speed E 15 mph
Barometer 29.56 in
Dewpoint 27°F (-3°C)
Visibility 4.00 mi
Wind Chill29°F (-2°C)
Last update 15 Mar 5:55 am CDT
Extended Forecast for

De Kalb IL

  • Today

    Today: Showers and thunderstorms before noon, then showers and possibly a thunderstorm, mainly after noon. High near 58. Windy, with a south wind 20 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 58 °F

    Showers and
    Windy

  • Tonight

    Tonight: Rain showers before 11pm, then rain and snow showers between 11pm and midnight, then snow showers after midnight. Some thunder is also possible. Patchy blowing snow after 1am. Low around 20. Windy, with a west southwest wind 20 to 30 mph becoming northwest in the evening. Winds could gust as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Low: 20 °F

    Rain/Snow and
    Patchy
    Blowing Snow

  • Monday

    Monday: Snow showers likely, mainly before 1pm. Widespread blowing snow, mainly before 1pm. Cloudy, with a temperature falling to around 19 by 5pm. Wind chill values as low as 1. Windy, with a northwest wind around 30 mph, with gusts as high as 45 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    High: 21 °F⇓

    Snow Showers
    Likely and
    Blowing Snow

  • Monday Night

    Monday Night: Patchy blowing snow before 7pm. Cloudy, then gradually becoming partly cloudy, with a low around 7. Wind chill values as low as -8. Blustery, with a west northwest wind 15 to 25 mph, with gusts as high as 30 mph.

    Low: 7 °F

    Patchy
    Blowing Snow
    and Blustery
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 24. West northwest wind around 10 mph, with gusts as high as 15 mph.

    High: 24 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Snow showers likely, mainly after 1am. Mostly cloudy, with a low around 18. Chance of precipitation is 70%.

    Low: 18 °F

    Chance Snow
    Showers then
    Snow Showers
    Likely

  • Wednesday

    Wednesday: Partly sunny, with a high near 43.

    High: 43 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny

Detailed Forecast

Today
Showers and thunderstorms before noon, then showers and possibly a thunderstorm, mainly after noon. High near 58. Windy, with a south wind 20 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Rain showers before 11pm, then rain and snow showers between 11pm and midnight, then snow showers after midnight. Some thunder is also possible. Patchy blowing snow after 1am. Low around 20. Windy, with a west southwest wind 20 to 30 mph becoming northwest in the evening. Winds could gust as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Monday
Snow showers likely, mainly before 1pm. Widespread blowing snow, mainly before 1pm. Cloudy, with a temperature falling to around 19 by 5pm. Wind chill values as low as 1. Windy, with a northwest wind around 30 mph, with gusts as high as 45 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Monday Night
Patchy blowing snow before 7pm. Cloudy, then gradually becoming partly cloudy, with a low around 7. Wind chill values as low as -8. Blustery, with a west northwest wind 15 to 25 mph, with gusts as high as 30 mph.
Tuesday
Mostly sunny, with a high near 24. West northwest wind around 10 mph, with gusts as high as 15 mph.
Tuesday Night
Snow showers likely, mainly after 1am. Mostly cloudy, with a low around 18. Chance of precipitation is 70%.
Wednesday
Partly sunny, with a high near 43.
Wednesday Night
Partly cloudy, with a low around 32.
Thursday
Mostly sunny, with a high near 53.
Thursday Night
Mostly cloudy, with a low around 36.
Friday
Mostly cloudy, with a high near 60.
Friday Night
Mostly cloudy, with a low around 36.
Saturday
Mostly sunny, with a high near 52.
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ABOUT THIS FORECAST

 
Point Forecast:
De Kalb IL
 41.92°N 88.76°W
Last Update:
4:31 am CDT Mar 15, 2026
Forecast Valid:
6am CDT Mar 15, 2026-6pm CDT Mar 21, 2026
 
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Additional Resources

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Chance of Precipitation