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.

Overcast

15°F

-9°C

Humidity 65%
Wind Speed NW 13 mph
Barometer 30.06 in
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill1°F (-17°C)
Last update 17 Mar 3:35 am CDT
Extended Forecast for

Dekalb IL

  • Overnight

    Overnight: A 50 percent chance of snow, mainly before 4am. Mostly cloudy, with a steady temperature around 10. Wind chill values as low as -5. Northwest wind around 15 mph, with gusts as high as 20 mph.

    Low: 10 °F

    Chance Snow

  • Tuesday

    Tuesday: Increasing clouds, with a high near 21. Wind chill values as low as -8. Northwest wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 15 mph.

    High: 21 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Snow, mainly after 10pm. Low around 18. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.

    Low: 18 °F

    Snow

  • Wednesday

    Wednesday: Snow likely before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 38. South wind 10 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 38 °F

    Snow Likely
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 33. Southwest wind around 5 mph, with gusts as high as 10 mph.

    Low: 33 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 58.

    High: 58 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 50 percent chance of snow, mainly before 4am. Mostly cloudy, with a steady temperature around 10. Wind chill values as low as -5. Northwest wind around 15 mph, with gusts as high as 20 mph.
Tuesday
Increasing clouds, with a high near 21. Wind chill values as low as -8. Northwest wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 15 mph.
Tuesday Night
Snow, mainly after 10pm. Low around 18. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.
Wednesday
Snow likely before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 38. South wind 10 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Wednesday Night
A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 33. Southwest wind around 5 mph, with gusts as high as 10 mph.
Thursday
Mostly sunny, with a high near 49.
Thursday Night
Mostly cloudy, with a low around 35.
Friday
Mostly cloudy, with a high near 58.
Friday Night
Mostly cloudy, with a low around 38.
Saturday
Partly sunny, with a high near 64.
Saturday Night
Partly cloudy, with a low around 40.
Sunday
Mostly cloudy, with a high near 57.
Sunday Night
Mostly cloudy, with a low around 29.
Monday
Mostly sunny, with a high near 45.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Dekalb IL
 41.9°N 88.76°W
Last Update:
3:51 am CDT Mar 17, 2026
Forecast Valid:
3am CDT Mar 17, 2026-6pm CDT Mar 23, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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