Autumn Temperatures for Eastern Third of the Country; Super Typhoon Approaching Guam

Cooler and less humid conditions for the eastern third of the nation as a cold slides off the east coast. Combination of dry and breezy conditions may result in spread of wildfires across the lower Mississippi Valley. In addition, fire weather conditions linger into portions of Southern California. For Guam, a super typhoon is approaching. Read More >

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair

55°F

13°C

Humidity 31%
Wind Speed SW 13 G 18 mph
Barometer 30.40 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 17 Oct 4:45 pm CDT
Extended Forecast for

Janesville WI

  • Tonight

    Tonight: Clear, with a low around 38. Southwest wind 5 to 10 mph.

    Low: 38 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 62. Southwest wind 10 to 15 mph.

    High: 62 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 39. South wind 5 to 10 mph becoming light  after midnight.

    Low: 39 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 66. Calm wind becoming south around 5 mph in the afternoon.

    High: 66 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 40. Calm wind.

    Low: 40 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 67. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 67 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 43. Southeast wind around 5 mph becoming calm.

    Low: 43 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 70. Calm wind becoming south around 5 mph in the afternoon.

    High: 70 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 38. Southwest wind 5 to 10 mph.
Sunday
Sunny, with a high near 62. Southwest wind 10 to 15 mph.
Sunday Night
Clear, with a low around 39. South wind 5 to 10 mph becoming light after midnight.
Monday
Sunny, with a high near 66. Calm wind becoming south around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 40. Calm wind.
Tuesday
Sunny, with a high near 67. Calm wind becoming southeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 43. Southeast wind around 5 mph becoming calm.
Wednesday
Sunny, with a high near 70. Calm wind becoming south around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 48.
Thursday
Mostly sunny, with a high near 71.
Thursday Night
Partly cloudy, with a low around 47.
Friday
Mostly sunny, with a high near 70.
Friday Night
Partly cloudy, with a low around 49.
Saturday
Mostly sunny, with a high near 70.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Janesville WI
 42.67°N 89.01°W (Elev. 797 ft)
3:41 pm CDT Oct 17, 2026
5pm CDT Oct 17, 2026-6pm CDT Oct 24, 2026
 
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