Heat Expands for Center of the Nation; Severe Thunderstorms for Plains and Upper Midwest

Dangerous heat expands across the Desert Southwest, Plains, Mississippi Valley and Midwest. Critical fire weather for portions of the Intermountain West. Risk for severe thunderstorms and flash flooding across the Upper Midwest/Great Lakes, Ohio Valley, and portions of the mid-Atlantic. Active monsoonal moisture fuels thunderstorms over the Southwest. Hurricane Fausto in the Pacific, should weaken Read More >

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Partly Cloudy

81°F

27°C

Humidity	100%
Wind Speed	S 5 mph
Barometer	29.92 in
Dewpoint	81°F (27°C)
Visibility	7.00 mi
Heat Index	91°F (33°C)
Last update	26 Jul 9:45 am CDT

More Information:

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

Extended Forecast for

South Beloit IL

Heat Advisory July 26, 12:00pm until July 26, 08:00pm

Click here for hazard details and duration

Heat Advisory

Today
High: 90 °F
Decreasing
Clouds
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
Thursday
High: 86 °F
Mostly Sunny

Detailed Forecast

Today

Cloudy, then gradually becoming mostly 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. Southwest wind around 5 mph becoming calm. Winds could gust as high as 10 mph.

Monday

A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, then gradually becoming sunny, with a high near 90. Heat index values as high as 101. South wind 5 to 15 mph becoming west in the afternoon. 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 northwest 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 86.

Thursday Night

Mostly cloudy, with a low around 63.