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 >

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Mostly Cloudy

88°F

31°C

Humidity 61%
Wind Speed NE 8 mph
Barometer 30.06 in (1016.4 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 16 Aug 2:51 pm CDT
Extended Forecast for

Third Lake IL

Severe T-storm Watch until August 16, 07:00pm
Click here for hazard details and duration
Severe T-storm Watch
  •  
    Severe T-storm Watch until August 16, 07:00pm

    NOW until 7:00pm Sat

    Severe T-storm Watch

  • This Afternoon

    High: 95 °F

    Severe
    Thunderstorms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 10pm. Some of the storms could be severe.  Mostly cloudy, with a low around 70. Southeast wind around 5 mph becoming northwest after midnight. Winds could gust as high as 15 mph.  Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 70 °F

    Severe
    Thunderstorms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms, mainly between 10am and 1pm.  Cloudy, then gradually becoming mostly sunny, with a high near 79. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 79 °F

    Slight Chance
    T-storms

  • Sunday Night

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

    Low: 69 °F

    Chance
    T-storms

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms, mainly before 1pm.  Mostly sunny, with a high near 89. South wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 89 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 71.

    Low: 71 °F

    Chance
    T-storms

  • Tuesday

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

    High: 85 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 65.

    Low: 65 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Showers and thunderstorms, mainly before 5pm, then showers and possibly a thunderstorm after 5pm. Some of the storms could be severe. High near 95. South wind 5 to 15 mph becoming north northwest. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely, mainly before 10pm. Some of the storms could be severe. Mostly cloudy, with a low around 70. Southeast wind around 5 mph becoming northwest after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
A 20 percent chance of showers and thunderstorms, mainly between 10am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 79. 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 southeast wind 5 to 10 mph.
Monday
A 40 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 89. South wind 5 to 10 mph, with gusts as high as 15 mph.
Monday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Tuesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
Tuesday Night
Mostly cloudy, with a low around 65.
Wednesday
Partly sunny, with a high near 76.
Wednesday Night
Partly cloudy, with a low around 62.
Thursday
Sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 62.
Friday
Sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Third Lake IL
 42.37°N 87.99°W
3:42 pm CDT Aug 16, 2025
3pm CDT Aug 16, 2025-6pm CDT Aug 22, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database