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.

Partly Cloudy

90°F

32°C

Humidity	75%
Wind Speed	W 6 mph
Barometer	29.87 in
Dewpoint	81°F (27°C)
Visibility	10.00 mi
Heat Index	109°F (43°C)
Last update	26 Jul 4:45 pm CDT

More Information:

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

Extended Forecast for

South Beloit 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: 89 °F
Partly Sunny
Tonight
Low: 73 °F
Mostly Cloudy
then Chance
T-storms
Monday
High: 90 °F
Showers
Likely then
Slight Chance
T-storms
Monday Night
Low: 67 °F
Slight Chance
T-storms then
Partly Cloudy
Tuesday
High: 83 °F
Mostly Sunny
Tuesday Night
Low: 59 °F
Mostly Clear
Wednesday
High: 84 °F
Sunny
Wednesday Night
Low: 61 °F
Mostly Clear

Detailed Forecast

This Afternoon

Partly sunny, with a high near 89. Heat index values as high as 101. Southwest wind around 10 mph.

Tonight

A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 73. Southwest wind around 5 mph becoming calm. Winds could gust as high as 15 mph.

Monday

Showers and thunderstorms likely before noon, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 90. Heat index values as high as 103. South southeast wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Monday Night

A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 67. West northwest wind 5 to 10 mph becoming north northeast after midnight. Winds could gust as high as 15 mph.

Tuesday

Mostly sunny, with a high near 83. North wind around 10 mph, with gusts as high as 15 mph.

Tuesday Night

Mostly clear, with a low around 59.

Wednesday

Sunny, with a high near 84.

Wednesday Night

Mostly clear, with a low around 61.

Thursday

Sunny, with a high near 86.

Thursday Night

Mostly cloudy, with a low around 65.