Heat Across the Center of the Nation; Severe Thunderstorms Across the Great Lakes and Ohio Valley

Heat expands across the Desert Southwest, Plains, Mississippi Valley and Midwest into Monday. Fire weather concerns continue for portions of the Intermountain West. Active monsoonal moisture fuels thunderstorms over the Southwest with possible flash flooding. Tropical cyclone Fausto in the Pacific, should weaken as it approaches Hawaii; Dangerous surf, swells and rip currents are expected. Read More >

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Mostly Cloudy

84°F

29°C

Humidity	84%
Wind Speed	W 9 mph
Barometer	29.92 in
Dewpoint	79°F (26°C)
Visibility	10.00 mi
Heat Index	96°F (36°C)
Last update	26 Jul 12:45 pm CDT

More Information:

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

Extended Forecast for

Roscoe IL

Heat Advisory until July 26, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory until July 26, 08:00pm
NOW until 8:00pm Sun
Heat Advisory
This Afternoon
High: 90 °F
Partly Sunny
Tonight
Low: 73 °F
Partly Cloudy
then Chance
T-storms
Monday
High: 90 °F
Chance
T-storms
Monday Night
Low: 69 °F
Slight Chance
T-storms then
Partly Cloudy
Tuesday
High: 84 °F
Mostly Sunny
Tuesday Night
Low: 61 °F
Mostly Clear
Wednesday
High: 83 °F
Sunny
Wednesday Night
Low: 59 °F
Mostly Clear

Detailed Forecast

This Afternoon

Partly sunny, with a high near 90. Heat index values as high as 101. Southwest wind 5 to 10 mph.

Tonight

A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73. South southwest wind around 5 mph, with gusts as high as 10 mph.

Monday

A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 90. Heat index values as high as 101. South wind 5 to 15 mph becoming north northwest in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 40%.

Monday Night

A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 69. West wind 5 to 10 mph becoming north after midnight. Winds could gust as high as 15 mph.

Tuesday

Mostly sunny, with a high near 84. North wind around 10 mph, with gusts as high as 15 mph.

Tuesday Night

Mostly clear, with a low around 61.

Wednesday

Sunny, with a high near 83.

Wednesday Night

Mostly clear, with a low around 59.

Thursday

Mostly sunny, with a high near 85.

Thursday Night

Mostly cloudy, with a low around 62.