Heavy Rainfall and Severe Thunderstorm Threats; Heat Risk Expands; Monitoring the Tropics

Flash flooding risks continue for portions of the Four Corners and Great Basin through today. Severe thunderstorms are outlooked from the eastern Great Lakes, southern New England into the mid-Atlantic through Tuesday. Heat risk increases and expands across the center of the nation and across the Ohio Valley and mid-Atlantic this week. Continue to closely monitor tropical development in the Gulf. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Overcast

72°F

22°C

Humidity	83%
Wind Speed	S 7 mph
Barometer	29.90 in
Dewpoint	66°F (19°C)
Visibility	10.00 mi
Last update	31 Aug 6:45 am CDT

More Information:

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

Extended Forecast for

Roscoe IL

Today
High: 85 °F
Chance
T-storms
Tonight
Low: 71 °F
Slight Chance
T-storms then
Partly Cloudy
Tuesday
High: 87 °F
Slight Chance
T-storms
Tuesday Night
Low: 71 °F
Slight Chance
T-storms
Wednesday
High: 88 °F
Mostly Sunny
Wednesday Night
Low: 69 °F
Partly Cloudy
then Chance
T-storms
Thursday
High: 85 °F
Chance
T-storms
Thursday Night
Low: 66 °F
Partly Cloudy
Friday
High: 87 °F
Mostly Sunny

Detailed Forecast

Today

A 30 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 85. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

Tonight

A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 71. South southwest wind around 5 mph, with gusts as high as 15 mph.

Tuesday

A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 87. Light south southwest wind becoming southwest 5 to 10 mph in the morning.

Tuesday Night

A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 71. South southwest wind around 5 mph becoming calm in the evening.

Wednesday

Mostly sunny, with a high near 88. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.

Wednesday Night

A 50 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 69.

Thursday

A 40 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 85.

Thursday Night

Partly cloudy, with a low around 66.

Friday

Mostly sunny, with a high near 87.

Friday Night

Partly cloudy, with a low around 65.