Heavy Rain in the Appalachians and Central Gulf Coast; Heat Continues in the West; Monitoring the Tropics

Heavy to excessive rainfall over the southern Appalachians and portions of the central Gulf Coast may bring areas of flooding today. Hot temperatures are in place through today across much of the western U.S. and New England. Tropical Storm Erin is forecast to become a Major Hurricane this weekend as it moves across the central Atlantic Ocean. Monitor future forecasts for any East Coast impacts. Read More >

Hazardous Weather Conditions

Current conditions at

Lewis University Airport (KLOT)

Lat: 41.6°NLon: 88.1°WElev: 669ft.

Partly Cloudy

86°F

30°C

Humidity	70%
Wind Speed	S 12 G 18 mph
Barometer	29.94 in
Dewpoint	75°F (24°C)
Visibility	10.00 mi
Heat Index	95°F (35°C)
Last update	12 Aug 12:55 pm CDT

More Information:

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

Extended Forecast for

Naperville IL

Flood Watch until August 13, 12:00am

Click here for hazard details and duration

Flood Watch

Flood Watch until August 13, 12:00am
NOW until 12:00am Wed
Flood Watch
This Afternoon
High: 84 °F
T-storms
Likely
Tonight
Low: 67 °F
Chance
T-storms
Wednesday
High: 84 °F
Mostly Sunny
Wednesday Night
Low: 63 °F
Mostly Clear
Thursday
High: 83 °F
Sunny
Thursday Night
Low: 63 °F
Mostly Clear
Friday
High: 88 °F
Sunny
Friday Night
Low: 71 °F
Mostly Clear

Detailed Forecast

This Afternoon

Showers and thunderstorms likely. Mostly cloudy, with a high near 84. West southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Tonight

A 30 percent chance of showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 67. Southwest wind around 5 mph becoming west northwest after midnight. Winds could gust as high as 15 mph.

Wednesday

Mostly sunny, with a high near 84. North northwest wind around 5 mph, with gusts as high as 10 mph.

Wednesday Night

Mostly clear, with a low around 63. North northeast wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.

Thursday

Sunny, with a high near 83. Calm wind becoming east northeast around 5 mph in the afternoon.

Thursday Night

Mostly clear, with a low around 63.

Friday

Sunny, with a high near 88.

Friday Night

Mostly clear, with a low around 71.