Tracking Storm System Across the Eastern U.S.

A storm system will continue to produce widespread showers and thunderstorms as it progresses eastward across the central U.S. into the Northeast through the weekend. There are risks of severe thunderstorms and excessive rainfall on Saturday from the Ozarks into the mid-Mississippi River Valley with potential for damaging winds, large hail, tornadoes, and flash flooding. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

66°F

19°C

Humidity 65%
Wind Speed SW 13 mph
Barometer 29.70 in (1005.0 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 18 Oct 12:51 am CDT
Extended Forecast for

Long Lake IL

  • Overnight

    Overnight: A 50 percent chance of showers and thunderstorms after 3am.  Mostly cloudy, with a low around 62. South southwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 62 °F

    Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms likely before 10am, then a slight chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm.  Mostly cloudy, with a high near 73. West southwest wind around 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 73 °F

    Showers
    Likely then
    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 1am, then showers and possibly a thunderstorm between 1am and 4am, then showers after 4am.  Low around 48. South southwest wind 5 to 15 mph becoming northwest after midnight. Winds could gust as high as 30 mph.  Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 48 °F

    Chance
    T-storms then
    Showers

  • Sunday

    Sunday: A 50 percent chance of showers before 1pm.  Cloudy through mid morning, then gradual clearing, with a high near 57. Breezy, with a northwest wind around 20 mph, with gusts as high as 35 mph.

    High: 57 °F

    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39. West wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 39 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 40 percent chance of showers, mainly before 1am.  Partly cloudy, with a low around 44.

    Low: 44 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 53. Breezy.

    High: 53 °F

    Partly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 50 percent chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 62. South southwest wind around 10 mph, with gusts as high as 20 mph.
Saturday
Showers and thunderstorms likely before 10am, then a slight chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 73. West southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms before 1am, then showers and possibly a thunderstorm between 1am and 4am, then showers after 4am. Low around 48. South southwest wind 5 to 15 mph becoming northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
A 50 percent chance of showers before 1pm. Cloudy through mid morning, then gradual clearing, with a high near 57. Breezy, with a northwest wind around 20 mph, with gusts as high as 35 mph.
Sunday Night
Mostly clear, with a low around 39. West wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 65.
Monday Night
A 40 percent chance of showers, mainly before 1am. Partly cloudy, with a low around 44.
Tuesday
Partly sunny, with a high near 53. Breezy.
Tuesday Night
Partly cloudy, with a low around 38.
Wednesday
Sunny, with a high near 57.
Wednesday Night
Mostly cloudy, with a low around 40.
Thursday
Mostly sunny, with a high near 61.
Thursday Night
Partly cloudy, with a low around 39.
Friday
Mostly sunny, with a high near 60.
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ABOUT THIS FORECAST

 
Point Forecast:
Long Lake IL
 42.38°N 88.14°W
12:56 am CDT Oct 18, 2025
1am CDT Oct 18, 2025-6pm CDT Oct 24, 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