Dangerous Heat Wave Continues; Severe Thunderstorms and Heavy Rain from the Central Plains to the Midwest

A prolonged, dangerous heat wave will continue today in the Midwest and Mississippi Valley, and persist through the Independence Day weekend across the Ohio Valley, Mid-South, and East Coast. Severe thunderstorm are expected from the northern/central Plains to the Mid-Atlantic. Isolated slash flooding is possible from the central Plains to the Upper Midwest. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62° N Lon: 89.04° W Elev: 801 ft.

Overcast

77°F

25°C

Humidity	89%
Wind Speed	Calm
Barometer	29.96 in
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	78°F (26°C)
Last update	3 Jul 7:45 pm CDT

More Information:

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

Detailed forecast for

Rock County

Tonight

Mostly cloudy with a 50 percent chance of light showers and thunderstorms. Lows in the upper 60s. Southwest winds up to 10 mph.

Independence Day

Warm and humid. Partly sunny. Chance of light showers in the morning. Chance of thunderstorms in the late morning and afternoon. Showers likely in the afternoon. Highs in the mid 80s. Southwest winds up to 10 mph shifting to the north in the afternoon. Chance of precipitation 70 percent.

Saturday Night

Mostly cloudy with chance of light showers and thunderstorms through around midnight, then partly cloudy with chance of light showers after midnight. Lows in the mid 60s. East winds up to 10 mph shifting to the northwest after midnight. Chance of precipitation 40 percent.

Sunday

Partly sunny. Slight chance of light showers in the morning, then slight chance of light showers and thunderstorms in the afternoon. Highs in the lower 80s. Northwest winds 5 to 15 mph. Chance of precipitation 20 percent.

Sunday Night

Partly cloudy. Lows in the lower 60s. Northwest winds up to 10 mph.

Monday

Partly sunny. Highs around 80.

Monday Night

Partly cloudy. Lows around 60.

Tuesday

Mostly sunny. Highs in the mid 80s.

Tuesday Night

Mostly clear. Lows in the lower 60s.

Wednesday

Sunny in the morning then becoming partly sunny. Highs in the mid 80s.

Wednesday Night

Partly cloudy with chance of light showers and slight chance of thunderstorms. Lows in the mid 60s. Chance of precipitation 30 percent.

Thursday

Partly sunny with a 40 percent chance of showers and thunderstorms. Highs in the mid 80s.

Thursday Night

Partly cloudy. Chance of light showers and slight chance of thunderstorms through around midnight, then chance of light showers after midnight. Lows in the mid 60s. Chance of precipitation 40 percent.

Friday

Partly sunny. Slight chance of light showers in the morning, then chance of light showers and slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of precipitation 30 percent.