Dangerous Heat in the Central and Eastern U.S.; Critical Fire Weather in the Great Basin and 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 Tuesday across portions of the Four Corners and Great Basin, as dry conditions and gusty winds persist. Read More >

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Partly Cloudy

86°F

30°C

Humidity	70%
Wind Speed	S 15 mph
Barometer	29.87 in
Dewpoint	75°F (24°C)
Visibility	10.00 mi
Heat Index	95°F (35°C)
Last update	29 Jun 7:45 pm CDT

More Information:

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

Extended Forecast for

4 Miles S Fort Atkinson WI

Extreme Heat Warning June 29, 07:59pm until July 1, 07:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning June 29, 07:59pm until July 1, 07:00pm
NOW until 7:00pm Wed
Extreme Heat Warning
Tonight
Low: 77 °F
Partly Cloudy
Tuesday
High: 93 °F
Hot
Tuesday Night
Low: 75 °F
Slight Chance
T-storms
Wednesday
High: 93 °F
Hot
Wednesday Night
Low: 75 °F
Mostly Clear
then Slight
Chance
T-storms
Thursday
High: 91 °F
Mostly Sunny
then Chance
T-storms
Thursday Night
Low: 71 °F
Chance
T-storms
Friday
High: 88 °F
Showers
Likely

Detailed Forecast

Tonight

Partly cloudy, with a low around 77. South wind 10 to 15 mph.

Tuesday

Mostly sunny and hot, with a high near 93. Heat index values as high as 105. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

Tuesday Night

A slight chance of showers and thunderstorms between 10pm and 4am. Partly cloudy, with a low around 75. Southwest wind 10 to 15 mph. Chance of precipitation is 20%.

Wednesday

Sunny and hot, with a high near 93. Heat index values as high as 102. Southwest wind 10 to 15 mph.

Wednesday Night

A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 75. Southwest wind around 10 mph.

Thursday

A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 91. Southwest wind 10 to 15 mph.

Thursday Night

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Southwest wind 5 to 10 mph.

Friday

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 88. 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 Night

A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.

Independence Day

A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.

Saturday Night

Showers and thunderstorms likely. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.

Sunday

A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.

Sunday Night

A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.

Monday

A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82.