Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Hazardous Weather Conditions

Current conditions at

Lewis University Airport (KLOT)

Lat: 41.6°NLon: 88.1°WElev: 669ft.

Fair

88°F

31°C

Humidity	62%
Wind Speed	S 3 mph
Barometer	30.07 in
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	96°F (36°C)
Last update	16 Aug 11:45 am CDT

More Information:

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

Extended Forecast for

3 Miles SSE Naperville IL

Heat Advisory until August 16, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory until August 16, 08:00pm
NOW until 8:00pm Sat
Heat Advisory
This Afternoon
High: 92 °F
Chance
T-storms
Tonight
Low: 71 °F
Chance
T-storms
Sunday
High: 85 °F
Slight Chance
T-storms
Sunday Night
Low: 72 °F
Slight Chance
T-storms
Monday
High: 92 °F
Chance
T-storms
Monday Night
Low: 73 °F
Chance
T-storms
Tuesday
High: 89 °F
Chance
T-storms
Tuesday Night
Low: 67 °F
Mostly Cloudy

Detailed Forecast

This Afternoon

A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 92. Heat index values as high as 102. West southwest wind around 5 mph, with gusts as high as 15 mph.

Tonight

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Southwest wind around 5 mph becoming northeast in the evening. Winds could gust as high as 10 mph.

Sunday

A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 85. East northeast wind 5 to 10 mph.

Sunday Night

A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72. Northeast wind around 5 mph becoming east southeast after midnight. Winds could gust as high as 10 mph.

Monday

A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 92. Southeast wind 5 to 10 mph becoming south southwest in the afternoon. Winds could gust as high as 15 mph.

Monday Night

A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.

Tuesday

A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 89.

Tuesday Night

Mostly cloudy, with a low around 67.

Wednesday

Partly sunny, with a high near 78.

Wednesday Night

Partly cloudy, with a low around 64.

Thursday

Sunny, with a high near 82.