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

Flooding Risks from Tropical Moisture Across the Intermountain West and East Coast

Tropical moisture from Isaias and Rachel will impact portions of the Intermountain West and East Coast states. Flooding, gusty winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, record warmth will spread northward across the Mississippi Valley the next few days. Looking for snow, the first winter storm of the season is underway across the northern Rockies. Read More >

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair

73°F

23°C

Humidity 53%
Wind Speed S 12 mph
Barometer 29.96 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 11 Oct 12:45 pm CDT
Extended Forecast for

Janesville WI

  • This Afternoon

    This Afternoon: Sunny, with a high near 81. South wind around 10 mph.

    High: 81 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 61. South wind around 5 mph.

    Low: 61 °F

    Increasing
    Clouds

  • Columbus Day

    Columbus Day: Mostly sunny, with a high near 83. Southwest wind 10 to 15 mph.

    High: 83 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 67. Southwest wind around 10 mph.

    Low: 67 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 77. West wind around 10 mph.

    High: 77 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers, mainly before 1am. Partly cloudy, with a low around 54. North wind around 5 mph becoming calm in the evening.

    Low: 54 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A 20 percent chance of showers. Partly sunny, with a high near 68. Northeast wind 5 to 10 mph.

    High: 68 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 50. Northeast wind around 5 mph.

    Low: 50 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A 50 percent chance of showers. Mostly cloudy, with a high near 65.

    High: 65 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 81. South wind around 10 mph.
Tonight
Increasing clouds, with a low around 61. South wind around 5 mph.
Columbus Day
Mostly sunny, with a high near 83. Southwest wind 10 to 15 mph.
Monday Night
Mostly clear, with a low around 67. Southwest wind around 10 mph.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 77. West wind around 10 mph.
Tuesday Night
A 30 percent chance of showers, mainly before 1am. Partly cloudy, with a low around 54. North wind around 5 mph becoming calm in the evening.
Wednesday
A 20 percent chance of showers. Partly sunny, with a high near 68. Northeast wind 5 to 10 mph.
Wednesday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 50. Northeast wind around 5 mph.
Thursday
A 50 percent chance of showers. Mostly cloudy, with a high near 65.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 46.
Friday
A 20 percent chance of showers. Mostly cloudy, with a high near 58. Breezy.
Friday Night
Mostly cloudy, with a low around 36.
Saturday
Mostly sunny, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Janesville WI
 42.69°N 89.01°W (Elev. 863 ft)
Last Update:
1:16 pm CDT Oct 11, 2026
Forecast Valid:
1pm CDT Oct 11, 2026-6pm CDT Oct 17, 2026
 
Forecast Discussion
 
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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