Severe Thunderstorm and Flash Flooding Risks from Southern Plains to Midwest; Heat Wave Developing in the Southeast

Severe thunderstorms and flash flooding will again be possible from the Southern Plains into the Midwest on Friday. Periodic risks of severe thunderstorms, along with flash flooding, are forecast from the Central and Southern Plains to the Great Lakes and Northeast into the Memorial Day weekend. Temperatures across much of the East will run above normal where they will hold into Memorial Day. Read More >

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

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

Rain

54°F

12°C

Humidity	100%
Wind Speed	E 6 mph
Barometer	30.15 in
Dewpoint	54°F (12°C)
Visibility	5.00 mi
Wind Chill	52°F (11°C)
Last update	24 May 6:45 am CDT

More Information:

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

Detailed forecast for

Rock County

Today

Periods of rain showers and scattered thunderstorms. Highs in the lower 70s. Southeast winds 10 to 15 mph. Chance of precipitation 90 percent.

Tonight

Warmer. Numerous showers and thunderstorms in the evening, then periods of showers and scattered thunderstorms in the late evening and overnight. Some thunderstorms may produce heavy rainfall in the evening. Some thunderstorms may produce heavy rainfall in the late evening and overnight. Near steady temperature in the upper 60s. South winds 10 to 15 mph. Chance of precipitation 90 percent.

Saturday

Mostly cloudy until late afternoon then becoming mostly sunny. Scattered light showers and isolated thunderstorms in the morning, then isolated light showers late in the morning. Highs in the lower 80s. Southwest winds 10 to 15 mph. Chance of precipitation 50 percent.

Saturday Night

Cooler. Partly cloudy with a 20 percent chance of light rain showers and thunderstorms. Lows in the mid 50s. West winds 5 to 10 mph shifting to the north after midnight.

Sunday

Partly sunny. A 20 percent chance of light rain showers in the morning. Highs in the mid 70s. Northeast winds around 5 mph.

Sunday Night

Partly cloudy. A 20 percent chance of light rain showers after midnight. Lows in the lower 50s.

Memorial Day

Mostly cloudy with a 50 percent chance of light rain showers and thunderstorms. Highs in the mid 70s.

Monday Night

Mostly cloudy with a 40 percent chance of light rain showers and thunderstorms. Lows around 60.

Tuesday

Mostly cloudy with a 50 percent chance of light showers and thunderstorms. Highs in the upper 70s.

Tuesday Night

Rain showers and thunderstorms likely through around midnight, then rain showers likely and chance of thunderstorms after midnight. Lows in the mid 50s. Chance of precipitation 70 percent.

Wednesday

Mostly cloudy with a 50 percent chance of light rain showers and thunderstorms. Highs in the lower 70s.

Wednesday Night

Partly cloudy. A 20 percent chance of light rain showers through around midnight. Lows in the upper 40s.

Thursday

Mostly sunny. Highs in the upper 60s.