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

Showers and Thunderstorms in the Southwest and Ohio Valley; Mountain Snow in the Northeast

Showers and thunderstorms, along with high-elevation snow, will begin to develop over parts of the Southwest late tonight and is expected to continue through Wednesday morning. Mountain snow over parts the Northeast will continue through Tuesday. A few strong to severe storms and heavy rainfall are possible across portions of the Lower Ohio Valley Tuesday. Read More >

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Light Rain

36°F

2°C

Humidity 93%
Wind Speed E 10 mph
Barometer 30.03 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 18 Nov 2:15 am CST
Extended Forecast for

Rockton IL

  • Overnight

    Overnight: Rain before 3am, then showers after 3am. Low around 37. East southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 37 °F

    Rain

  • Tuesday

    Tuesday: Showers with a chance of drizzle before 2pm, then a chance of drizzle between 2pm and 5pm. High near 42. East wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 42 °F

    Showers then
    Chance
    Drizzle

  • Tuesday Night

    Tuesday Night: Cloudy, with a low around 35. Northeast wind 5 to 10 mph.

    Low: 35 °F

    Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 45. Northeast wind around 5 mph becoming east southeast in the morning.

    High: 45 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 38. Calm wind.

    Low: 38 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of rain after noon. Mostly cloudy, with a high near 55.

    High: 55 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Thursday Night

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

    Low: 30 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

Detailed Forecast

Overnight
Rain before 3am, then showers after 3am. Low around 37. East southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
Showers with a chance of drizzle before 2pm, then a chance of drizzle between 2pm and 5pm. High near 42. East wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
Cloudy, with a low around 35. Northeast wind 5 to 10 mph.
Wednesday
Mostly cloudy, with a high near 45. Northeast wind around 5 mph becoming east southeast in the morning.
Wednesday Night
Mostly cloudy, with a low around 38. Calm wind.
Thursday
A 20 percent chance of rain after noon. Mostly cloudy, with a high near 55.
Thursday Night
Mostly cloudy, with a low around 30.
Friday
Mostly sunny, with a high near 47.
Friday Night
Partly cloudy, with a low around 25.
Saturday
Mostly sunny, with a high near 48.
Saturday Night
Partly cloudy, with a low around 31.
Sunday
Mostly sunny, with a high near 52.
Sunday Night
Partly cloudy, with a low around 34.
Monday
Mostly sunny, with a high near 53.
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:
2:21 am CST Nov 18, 2025
Forecast Valid:
2am CST Nov 18, 2025-6pm CST Nov 24, 2025
 
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