Heavy Rainfall Possible in the Upper Midwest, South Texas, and Puerto Rico and the Virgin Islands

Scattered thunderstorms and heavy rainfall may bring areas of flooding though the weekend over the Upper Midwest. A tropical disturbance will bring moderate to locally heavy rain to portions of South Texas into Saturday. Tropical Storm Erin may bring isolated flash and urban flooding, landslides or mudslides, and tropical storm conditions to Puerto Rico and the U.S. Virgin Islands. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Lewis University Airport (KLOT)

Lat: 41.6°NLon: 88.1°WElev: 669ft.

A Few Clouds

77°F

25°C

Humidity	74%
Wind Speed	SE 7 mph
Barometer	30.11 in
Dewpoint	68°F (20°C)
Visibility	10.00 mi
Heat Index	79°F (26°C)
Last update	15 Aug 8:45 am CDT

More Information:

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

Extended Forecast for

4 Miles SE Lemont IL

Today
High: 91 °F
Mostly Sunny
Tonight
Low: 72 °F
Partly Cloudy
then Slight
Chance
T-storms
Saturday
High: 93 °F
Slight Chance
T-storms
Saturday Night
Low: 74 °F
Chance
T-storms
Sunday
High: 92 °F
Chance
T-storms
Sunday Night
Low: 73 °F
Slight Chance
T-storms
Monday
High: 94 °F
Chance
T-storms
Monday Night
Low: 73 °F
Chance
T-storms
Tuesday
High: 89 °F
Chance
T-storms

Detailed Forecast

Today

Mostly sunny, with a high near 91. Southwest wind around 5 mph.

Tonight

A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72. Southwest wind around 5 mph becoming calm in the evening.

Saturday

A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 93. Heat index values as high as 104. South wind 5 to 10 mph, with gusts as high as 15 mph.

Saturday Night

A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 74. South southwest wind 5 to 10 mph becoming southeast after midnight.

Sunday

A 30 percent chance of showers and thunderstorms, mainly before 10am. Mostly sunny, with a high near 92. East northeast wind 5 to 10 mph.

Sunday Night

A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 73.

Monday

A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 94.

Monday Night

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

Tuesday

A chance of showers and thunderstorms. Mostly sunny, with a high near 89.

Tuesday Night

Mostly cloudy, with a low around 69.