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

Extreme Heat and Tropical Storm Bertha Impacts

Dangerous heat will expand from the Gulf Coast into the Southern Plains and Desert Southwest through week's end. Additional extreme heat impacting the Pacific Northwest will shift to the northern Plains by the weekend. Tropical Storm Bertha is expected to continue to impact portions of the northern Gulf Coast from the western Florida Panhandle to southeastern Louisiana through tonight. Read More >

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

2 Miles NNE Janesville WI

  • Overnight

    Overnight: Mostly clear, with a low around 51. Calm wind.

    Low: 51 °F

    Mostly Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 78. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 78 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 55. Southwest wind around 5 mph becoming calm.

    Low: 55 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 80. Light south wind increasing to 5 to 10 mph in the morning.

    High: 80 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 58. South wind around 5 mph.

    Low: 58 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 84. South wind 5 to 10 mph.

    High: 84 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 66. Southwest wind around 5 mph becoming calm in the evening.

    Low: 66 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 91. Southwest wind 5 to 10 mph.

    High: 91 °F

    Hot

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 51. Calm wind.
Thursday
Increasing clouds, with a high near 78. Calm wind becoming southwest around 5 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 55. Southwest wind around 5 mph becoming calm.
Friday
Mostly sunny, with a high near 80. Light south wind increasing to 5 to 10 mph in the morning.
Friday Night
Partly cloudy, with a low around 58. South wind around 5 mph.
Saturday
Partly sunny, with a high near 84. South wind 5 to 10 mph.
Saturday Night
Partly cloudy, with a low around 66. Southwest wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny and hot, with a high near 91. Southwest wind 5 to 10 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 71.
Monday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny and hot, with a high near 92. Chance of precipitation is 20%.
Monday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 67.
Tuesday
Mostly sunny, with a high near 86.
Tuesday Night
Mostly clear, with a low around 62.
Wednesday
Sunny, with a high near 84.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Janesville WI
 42.71°N 89°W (Elev. 892 ft)
Last Update:
2:36 am CDT Jul 23, 2026
Forecast Valid:
3am CDT Jul 23, 2026-6pm CDT Jul 29, 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