Extreme Heat and Excessive Rainfall This Week

A significant heat wave continues for the Rockies, Northern Plains, and Great Lakes into the Mid-Atlantic, peaking in intensity through midweek and lingering across parts of the Northern Plains and Midwest until this weekend. Excessive rainfall my bring life-threatening and locally catastrophic flash and urban flooding across portions of southwestern Texas through early Friday. Read More >

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

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

Humidity	NA
Wind Speed	NA
Barometer	NA
Dewpoint	NA
Visibility	NA
Last update	* Not a current observation *

More Information:

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

Detailed forecast for

Rock County

Rest Of Tonight

Clear. Near steady temperature in the lower 70s. West winds up to 5 mph.

Wednesday

Hot and humid. Mostly sunny. Highs in the mid 90s. Northwest winds up to 5 mph. Highest heat index readings 99 to 104 in the late morning and afternoon.

Wednesday Night

Partly cloudy. Patchy smoke late in the evening. Smoke after midnight. Lows around 70. East winds up to 5 mph. Highest heat index readings 97 to 102 in the evening.

Thursday

Sunny. Smoke in the morning, then areas of smoke in the afternoon. Chance of light showers and slight chance of thunderstorms in the afternoon. Highs in the upper 80s. Southeast winds up to 5 mph. Chance of precipitation 30 percent.

Thursday Night

Partly cloudy. Chance of light showers and slight chance of thunderstorms through around midnight. Lows in the upper 60s. Southeast winds up to 5 mph. Chance of precipitation 30 percent.

Friday

Mostly sunny. Chance of light showers in the morning, then chance of light showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of precipitation 50 percent.

Friday Night

Mostly clear. A 20 percent chance of light showers and thunderstorms through around midnight. Lows around 70.

Saturday

Sunny. A 20 percent chance of light showers and thunderstorms in the afternoon. Highs in the upper 80s.

Saturday Night

Mostly clear. Lows in the mid 60s.

Sunday

Sunny. Highs in the mid 80s.

Sunday Night

Partly cloudy. A 30 percent chance of light showers and thunderstorms after midnight. Lows in the upper 60s.

Monday

Partly sunny in the morning then clearing. Chance of light showers and slight chance of thunderstorms. Highs in the upper 80s. Chance of precipitation 40 percent.

Monday Night

Mostly clear. Chance of light showers and slight chance of thunderstorms through around midnight. Lows in the lower 60s. Chance of precipitation 30 percent.

Tuesday

Sunny. Highs in the lower 80s.