National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fog/Mist

39°F

4°C

Humidity 93%
Wind Speed SE 12 mph
Barometer 29.90 in
Dewpoint 37°F (3°C)
Visibility 4.00 mi
Wind Chill32°F (0°C)
Last update 27 Dec 12:45 pm CST
Extended Forecast for

Rockton IL

Wind Advisory December 28, 06:00pm until December 29, 06:00pm
Click here for hazard details and duration
Wind Advisory

  • This Afternoon

    This Afternoon: Cloudy, with a high near 42. Southeast wind around 10 mph, with gusts as high as 15 mph.

    High: 42 °F

    Cloudy

  • Tonight

    Tonight: A 40 percent chance of rain, mainly after 2am. Patchy fog. Otherwise, cloudy, with a temperature rising to around 44 by midnight. Southeast wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 41 °F⇑

    Chance Rain
    and Patchy
    Fog

  • Sunday

    Sunday: Rain. Areas of fog before noon. High near 52. South southeast wind 5 to 10 mph becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 52 °F

    Rain and
    Areas Fog

  • Sunday Night

    Sunday Night: Rain before 7pm, then snow, possibly mixed with rain between 7pm and 8pm, then snow after 8pm. Low around 14. Wind chill values as low as -5. Windy, with a west wind 20 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.

    Low: 14 °F

    Windy.
    Rain/Snow
    then Snow

  • Monday

    Monday: A 40 percent chance of snow before noon. Mostly cloudy, with a high near 21. Windy, with a northwest wind 20 to 30 mph, with gusts as high as 45 mph.

    High: 21 °F

    Chance Snow
    and Windy
    then Partly
    Sunny and
    Blustery

  • Monday Night

    Monday Night: Partly cloudy, with a low around 8.

    Low: 8 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 25.

    High: 25 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 29.

    High: 29 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Cloudy, with a high near 42. Southeast wind around 10 mph, with gusts as high as 15 mph.
Tonight
A 40 percent chance of rain, mainly after 2am. Patchy fog. Otherwise, cloudy, with a temperature rising to around 44 by midnight. Southeast wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday
Rain. Areas of fog before noon. High near 52. South southeast wind 5 to 10 mph becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Rain before 7pm, then snow, possibly mixed with rain between 7pm and 8pm, then snow after 8pm. Low around 14. Wind chill values as low as -5. Windy, with a west wind 20 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.
Monday
A 40 percent chance of snow before noon. Mostly cloudy, with a high near 21. Windy, with a northwest wind 20 to 30 mph, with gusts as high as 45 mph.
Monday Night
Partly cloudy, with a low around 8.
Tuesday
Partly sunny, with a high near 25.
Tuesday Night
Mostly cloudy, with a low around 20.
Wednesday
Mostly cloudy, with a high near 29.
Wednesday Night
A chance of snow before midnight. Mostly cloudy, with a low around 9.
New Year's Day
Mostly sunny, with a high near 18.
Thursday Night
Mostly clear, with a low around 6.
Friday
Mostly sunny, with a high near 22.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Rockton IL
 42.45°N 89.05°W
Last Update:
1:31 pm CST Dec 27, 2025
Forecast Valid:
1pm CST Dec 27, 2025-6pm CST Jan 2, 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