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

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Thunderstorm in Vicinity

76°F

24°C

Humidity	85%
Wind Speed	SE 6 mph
Barometer	29.99 in (1014.3 mb)
Dewpoint	71°F (22°C)
Visibility	10.00 mi
Heat Index	77°F (25°C)
Last update	16 Aug 7:51 pm CDT

More Information:

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

Extended Forecast for

Long Lake IL

Tonight
Low: 70 °F
T-storms then
Chance
T-storms
Sunday
High: 80 °F
Slight Chance
T-storms
Sunday Night
Low: 69 °F
Chance
T-storms
Monday
High: 89 °F
Chance
T-storms then
Chance
Showers
Monday Night
Low: 71 °F
Chance
T-storms
Tuesday
High: 85 °F
Chance
T-storms
Tuesday Night
Low: 64 °F
Mostly Cloudy
Wednesday
High: 76 °F
Partly Sunny
Wednesday Night
Low: 61 °F
Partly Cloudy

Detailed Forecast

Tonight

Showers and thunderstorms, mainly before 11pm. Low around 70. Southeast wind around 5 mph becoming northwest after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

Sunday

A 20 percent chance of showers and thunderstorms before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 80. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.

Sunday Night

A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 69. East northeast wind 5 to 10 mph.

Monday

A 40 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 89. Heat index values as high as 98. 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 71. South southwest wind around 5 mph, with gusts as high as 15 mph.

Tuesday

A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.

Tuesday Night

Mostly cloudy, with a low around 64.

Wednesday

Partly sunny, with a high near 76.

Wednesday Night

Partly cloudy, with a low around 61.

Thursday

Sunny, with a high near 79.

Thursday Night

Mostly clear, with a low around 60.