Severe Thunderstorms in the Northern Plains and Upper Midwest; Critical Fire Weather in the West; Dangerous Heat in the Central and Eastern U.S.

Severe thunderstorms are likely today across the northern Plains and into the upper Mississippi Valley. Gusty winds and dry conditions will result in widespread critical fire weather through Saturday across parts of the Four Corners region and the Great Basin. A significant and dangerous heat wave will expand from the Central U.S. into the Eastern U.S this weekend through much of next week. Read More >

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair

72°F

22°C

Humidity	78%
Wind Speed	SE 7 mph
Barometer	29.86 in
Dewpoint	64°F (18°C)
Visibility	10.00 mi
Last update	20 Jun 10:50 pm CDT

More Information:

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

Extended Forecast for

5 Miles ESE Milton WI

Heat Advisory June 21, 12:00pm until June 23, 07:00pm

Click here for hazard details and duration

Heat Advisory

Tonight
Low: 75 °F
Mostly Clear
Saturday
High: 94 °F
Hot and Windy
Saturday Night
Low: 76 °F
Mostly Clear
and Breezy
then Clear
Sunday
High: 94 °F
Hot and
Breezy
Sunday Night
Low: 75 °F
Clear
Monday
High: 93 °F
Sunny then
Slight Chance
Showers
Monday Night
Low: 69 °F
Chance
T-storms
Tuesday
High: 85 °F
Showers
Likely
Tuesday Night
Low: 64 °F
Chance
T-storms then
Showers
Likely

Detailed Forecast

Tonight

Mostly clear, with a low around 75. South wind around 15 mph, with gusts as high as 25 mph.

Saturday

Sunny and hot, with a high near 94. Heat index values as high as 105. Windy, with a southwest wind 15 to 25 mph, with gusts as high as 40 mph.

Saturday Night

Mostly clear, with a low around 76. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 35 mph.

Sunday

Sunny and hot, with a high near 94. Heat index values as high as 101. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.

Sunday Night

Clear, with a low around 75. Southwest wind around 15 mph, with gusts as high as 25 mph.

Monday

A 20 percent chance of showers after 1pm. Sunny and hot, with a high near 93. Southwest wind around 15 mph.

Monday Night

A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69. Southwest wind 5 to 10 mph.

Tuesday

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 85. Northwest wind 5 to 10 mph becoming southeast in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tuesday Night

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.

Wednesday

Showers likely and possibly a thunderstorm. Partly sunny, with a high near 87. Chance of precipitation is 60%.

Wednesday Night

Showers and thunderstorms likely. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.

Thursday

Showers and thunderstorms likely. Partly sunny, with a high near 83. Chance of precipitation is 60%.

Thursday Night

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.

Friday

A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 80.