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

Hazardous Weather Outlook

Current conditions at

Lewis University Airport (KLOT)

Lat: 41.6°NLon: 88.1°WElev: 669ft.

Fair

82°F

28°C

Humidity	70%
Wind Speed	S 3 mph
Barometer	30.08 in
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Heat Index	86°F (30°C)
Last update	15 Aug 8:15 pm CDT

More Information:

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

Extended Forecast for

4 Miles ESE Lemont IL

Tonight
Low: 73 °F
Slight Chance
Showers then
Chance
T-storms
Saturday
High: 93 °F
Chance
Showers then
Chance
T-storms
Saturday Night
Low: 73 °F
Chance
T-storms
Sunday
High: 90 °F
Slight Chance
T-storms
Sunday Night
Low: 72 °F
Partly Cloudy
then Slight
Chance
T-storms
Monday
High: 92 °F
Chance
T-storms
Monday Night
Low: 73 °F
Chance
T-storms
Tuesday
High: 88 °F
Chance
T-storms
Tuesday Night
Low: 69 °F
Mostly Cloudy

Detailed Forecast

Tonight

A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 73. South southwest wind around 5 mph. Chance of precipitation is 30%.

Saturday

A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 93. Heat index values as high as 101. South wind 5 to 10 mph becoming west southwest in the afternoon.

Saturday Night

A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 73. South southwest wind 5 to 10 mph.

Sunday

A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. Heat index values as high as 98. East northeast wind 5 to 10 mph.

Sunday Night

A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72. Northeast wind 5 to 10 mph becoming east southeast after midnight.

Monday

A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.

Monday Night

A 50 percent 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 88.

Tuesday Night

Mostly cloudy, with a low around 69.

Wednesday

Mostly sunny, with a high near 79.

Wednesday Night

Mostly clear, with a low around 65.