Extreme Heat Overspreads the Central and Southern U.S., Pushing East Through Midweek; Severe Weather and Excessive Rain for Portions of the Upper Midwest

Dangerous heat is expected across portions of the Central and Southeast U.S. through July. Severe storms for parts of the northern Plains & upper Midwest tonight & Wednesday- threats include a few tornadoes, damaging winds & excessive rain. Heavy rain may impact portions of the Southeast and Southwest into tonight. A tropical disturbance brings heavy rain to Guam & the Marianas through Friday. 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	88%
Wind Speed	SE 6 mph
Barometer	30.06 in
Dewpoint	68°F (20°C)
Visibility	10.00 mi
Last update	22 Jul 11:50 pm CDT

More Information:

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

Extended Forecast for

Roscoe IL

Heat Advisory July 23, 10:00am until July 23, 10:00pm

Click here for hazard details and duration

Heat Advisory

Overnight
Low: 71 °F
Slight Chance
T-storms
Wednesday
High: 91 °F
Slight Chance
T-storms then
Mostly Sunny
Wednesday Night
Low: 75 °F
Mostly Clear
Thursday
High: 91 °F
Slight Chance
T-storms then
Chance
T-storms
Thursday Night
Low: 70 °F
T-storms
Likely
Friday
High: 84 °F
Chance
T-storms
Friday Night
Low: 66 °F
Chance
T-storms
Saturday
High: 85 °F
Chance
Showers then
Chance
T-storms
Saturday Night
Low: 68 °F
Mostly Clear

Detailed Forecast

Overnight

A 10 percent chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 71. South southeast wind 5 to 10 mph.

Wednesday

A 20 percent chance of showers and thunderstorms before 9am. Mostly sunny, with a high near 91. Heat index values as high as 104. South wind 10 to 15 mph, with gusts as high as 20 mph.

Wednesday Night

Mostly clear, with a low around 75. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.

Thursday

A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 91. Heat index values as high as 101. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.

Thursday Night

Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 70. West southwest wind 5 to 10 mph becoming light west in the evening. Chance of precipitation is 60%.

Friday

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 84.

Friday Night

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.

Saturday

A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 85.

Saturday Night

Mostly clear, with a low around 68.

Sunday

Mostly sunny, with a high near 90.

Sunday Night

Mostly clear, with a low around 69.