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

90°F

32°C

Humidity	67%
Wind Speed	S 16 mph
Barometer	29.87 in
Dewpoint	77°F (25°C)
Visibility	10.00 mi
Heat Index	104°F (40°C)
Last update	29 Jun 1:45 pm CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Janesville WI

Extreme Heat Warning June 29, 02:08pm until July 1, 07:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning June 29, 02:08pm until July 1, 07:00pm
NOW until 7:00pm Wed
Extreme Heat Warning
This Afternoon
High: 94 °F
Hot
Tonight
Low: 76 °F
Partly Cloudy
Tuesday
High: 93 °F
Hot
Tuesday Night
Low: 76 °F
Mostly Clear
Wednesday
High: 94 °F
Hot
Wednesday Night
Low: 75 °F
Mostly Clear
Thursday
High: 92 °F
Mostly Sunny
then Chance
T-storms
Thursday Night
Low: 72 °F
Chance
T-storms then
Showers
Likely

Detailed Forecast

This Afternoon

Sunny and hot, with a high near 94. Heat index values as high as 106. South wind around 15 mph, with gusts as high as 25 mph.

Tonight

Partly cloudy, with a low around 76. South wind 10 to 15 mph, with gusts as high as 25 mph.

Tuesday

Mostly sunny and hot, with a high near 93. Heat index values as high as 107. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

Tuesday Night

Mostly clear, with a low around 76. 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 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 92. Southwest wind 10 to 15 mph.

Thursday Night

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 72. Southwest wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday

A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.

Friday Night

A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.

Independence Day

A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.

Saturday Night

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.

Sunday

A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.