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 with Haze

34°F

1°C

Humidity 76%
Wind Speed E 17 G 22 mph
Barometer 29.99 in
Dewpoint 28°F (-2°C)
Visibility 2.00 mi
Wind Chill23°F (-5°C)
Last update 14 Mar 6:55 pm CDT
Extended Forecast for

De Kalb IL

  • Tonight

    Tonight: A 20 percent chance of showers after 3am. Cloudy, with a temperature rising to around 38 by 5am. Breezy, with an east southeast wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 34 °F⇑

    Mostly Cloudy
    then Slight
    Chance
    Showers and
    Breezy

  • Sunday

    Sunday: A chance of showers, then showers and possibly a thunderstorm after 10am. High near 56. Breezy, with a south wind 15 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 56 °F

    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Rain, possibly mixed with snow showers before 10pm, then snow and sleet between 10pm and 11pm, then snow after 11pm. Patchy blowing snow after 1am. Low around 18. Windy, with a north northwest wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 1 to 3 inches possible.

    Low: 18 °F

    Wintry Mix
    and Breezy
    then Snow and
    Patchy
    Blowing Snow

  • Monday

    Monday: Snow likely, mainly before 1pm. Widespread blowing snow, mainly before 1pm. Cloudy, with a high near 22. Wind chill values as low as -1. Windy, with a northwest wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    High: 22 °F

    Snow Likely
    and Blowing
    Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 6. Blustery, with a west northwest wind 15 to 25 mph, with gusts as high as 30 mph.

    Low: 6 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 23.

    High: 23 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Snow showers, mainly after 1am. Low around 19. Chance of precipitation is 80%.

    Low: 19 °F

    Chance Snow
    Showers then
    Snow Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of showers after 3am. Cloudy, with a temperature rising to around 38 by 5am. Breezy, with an east southeast wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday
A chance of showers, then showers and possibly a thunderstorm after 10am. High near 56. Breezy, with a south wind 15 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Rain, possibly mixed with snow showers before 10pm, then snow and sleet between 10pm and 11pm, then snow after 11pm. Patchy blowing snow after 1am. Low around 18. Windy, with a north northwest wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 1 to 3 inches possible.
Monday
Snow likely, mainly before 1pm. Widespread blowing snow, mainly before 1pm. Cloudy, with a high near 22. Wind chill values as low as -1. Windy, with a northwest wind 25 to 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
Mostly cloudy, with a low around 6. Blustery, with a west northwest wind 15 to 25 mph, with gusts as high as 30 mph.
Tuesday
Mostly sunny, with a high near 23.
Tuesday Night
Snow showers, mainly after 1am. Low around 19. Chance of precipitation is 80%.
Wednesday
Mostly sunny, with a high near 42.
Wednesday Night
Mostly cloudy, with a low around 30.
Thursday
Mostly sunny, with a high near 54.
Thursday Night
Mostly cloudy, with a low around 35.
Friday
Partly sunny, with a high near 59.
Friday Night
Mostly cloudy, with a low around 38.
Saturday
Partly sunny, with a high near 61.
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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:
6:56 pm CDT Mar 14, 2026
Forecast Valid:
7pm CDT Mar 14, 2026-6pm CDT Mar 21, 2026
 
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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