Heat and Severe Thunderstorms in the Eastern U.S.

A widespread heat wave will peak over the South and East today, with several dozen temperature records expected along the East Coast. Heat should begin to ease this weekend in the Northeast, while hazardous heat continues over the South. Severe thunderstorms capable of damaging winds are possible across parts of the Appalachians, Mid Atlantic, and Northeast this afternoon and evening. Read More >

Current conditions at

Janesville-Rock County (KJVL)

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

Partly Cloudy

79°F

26°C

Humidity	45%
Wind Speed	W 17 G 23 mph
Barometer	29.90 in
Dewpoint	55°F (13°C)
Visibility	10.00 mi
Heat Index	80°F (27°C)
Last update	12 Jun 2:45 pm CDT

More Information:

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

Detailed forecast for

Rock County

Rest Of Today

Sunny. Near steady temperature in the upper 70s. West winds 15 to 20 mph.

Tonight

Clear. Lows in the upper 50s. Southwest winds 5 to 10 mph.

Saturday

Mostly sunny until late afternoon, then light showers likely and chance of thunderstorms late in the afternoon. Highs in the lower 80s. Southwest winds 10 to 15 mph. Chance of precipitation 60 percent.

Saturday Night

Mostly cloudy. Rain showers likely and chance of thunderstorms through around midnight, then chance of rain showers and slight chance of thunderstorms after midnight. Lows in the mid 50s. Northwest winds 5 to 15 mph. Chance of precipitation 70 percent.

Sunday

Cooler. Sunny in the morning then becoming partly sunny. Highs in the upper 60s. Northwest winds 10 to 20 mph.

Sunday Night

Clear through around midnight then becoming partly cloudy. Lows in the upper 40s.

Monday

Mostly sunny. Highs in the lower 70s.

Monday Night

Partly cloudy. Lows in the lower 50s.

Tuesday

Partly sunny. Chance of light rain showers in the morning, then light rain showers and chance of thunderstorms in the afternoon. Highs in the mid 70s. Chance of precipitation 80 percent.

Tuesday Night

Partly cloudy with a 40 percent chance of light rain showers and thunderstorms. Lows in the lower 50s.

Wednesday

Partly sunny. Slight chance of light rain showers and thunderstorms in the morning, then rain showers likely and chance of thunderstorms in the afternoon. Highs in the mid 70s. Chance of precipitation 70 percent.

Wednesday Night

Mostly cloudy. Rain showers and chance of thunderstorms through around midnight, then chance of light rain showers and slight chance of thunderstorms after midnight. Lows in the upper 50s. Chance of precipitation 80 percent.

Thursday

Partly sunny. Slight chance of light rain showers in the morning, then slight chance of light rain showers and thunderstorms in the afternoon. Highs in the mid 70s. Chance of precipitation 20 percent.