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

Dangerous Heat in the East; Critical Fire Weather in the Southwest

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Heat is likely to continue across the eastern U.S. through the Independence Day holiday weekend. Critical fire weather conditions will continue today and likely Tuesday across portions of the Four Corners and northern High Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Mostly Cloudy

86°F

30°C

Humidity 75%
Wind Speed S 15 mph
Barometer 29.89 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 29 Jun 10:45 am CDT
Extended Forecast for

6 Miles NE Avalon WI

Extreme Heat Warning June 29, 12:00pm until June 30, 07:00pm
Click here for hazard details and duration
Extreme Heat Warning

  • Today

    Today: Mostly sunny and hot, with a high near 93. Heat index values as high as 103. South wind around 15 mph, with gusts as high as 25 mph.

    High: 93 °F

    Hot

  • Tonight

    Tonight: A 20 percent chance of showers after 4am. Mostly clear, with a low around 75. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 75 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 94. Heat index values as high as 102. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 94 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 74. Southwest wind 10 to 15 mph.

    Low: 74 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 94. Southwest wind 10 to 15 mph.

    High: 94 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 75. Southwest wind around 10 mph.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 93. Southwest wind 10 to 15 mph.

    High: 93 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 73. Southwest wind 5 to 10 mph. Chance of precipitation is 50%.

    Low: 73 °F

    Chance
    Showers

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.

    High: 88 °F

    Chance
    T-storms

Detailed Forecast

Today
Mostly sunny and hot, with a high near 93. Heat index values as high as 103. South wind around 15 mph, with gusts as high as 25 mph.
Tonight
A 20 percent chance of showers after 4am. Mostly clear, with a low around 75. South wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday
Mostly sunny and hot, with a high near 94. Heat index values as high as 102. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly clear, with a low around 74. Southwest wind 10 to 15 mph.
Wednesday
Sunny and hot, with a high near 94. Southwest wind 10 to 15 mph.
Wednesday Night
Mostly clear, with a low around 75. Southwest wind around 10 mph.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 93. Southwest wind 10 to 15 mph.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 73. Southwest wind 5 to 10 mph. Chance of precipitation is 50%.
Friday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Friday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Independence Day
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Saturday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Sunday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles NE Avalon WI
 42.72°N 88.74°W (Elev. 997 ft)
Last Update:
10:33 am CDT Jun 29, 2026
Forecast Valid:
11am CDT Jun 29, 2026-6pm CDT Jul 5, 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