Severe Thunderstorms in the Central Plains; Heavy Rainfall in the Mississippi and Tennessee Valleys; Critical Fire Weather in the Southwest

Scattered severe storms capable of large to very large hail, severe wind gusts, and a few tornadoes will be possible across the central Plains. Heavy rain will pose a flash flood threat across portions of the Mississippi Valley into the Tennessee and Ohio Valleys. Hot, dry and windy conditions will continue to bring a critical fire weather threat from the Southwest into the Great Basin. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Partly Cloudy

66°F

19°C

Humidity 81%
Wind Speed E 7 mph
Barometer 30.01 in (1015.6 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 8 Jun 8:51 am CDT
Extended Forecast for

Mc Cullom Lake IL

  • Today

    Today: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm.  High near 81. Southeast wind 10 to 15 mph.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Chance
    T-storms then
    T-storms

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 1am, then a chance of showers.  Low around 69. Southeast wind 5 to 10 mph becoming southwest after midnight.  Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 69 °F

    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers before 1pm.  Partly sunny, with a high near 85. West wind 5 to 10 mph.

    High: 85 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms after 1am.  Mostly cloudy, with a low around 69. Calm wind becoming south around 5 mph after midnight. Winds could gust as high as 10 mph.

    Low: 69 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Wednesday

    Wednesday: Mostly sunny, with a high near 89. Breezy, with a south southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 89 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely.  Mostly cloudy, with a low around 71. Chance of precipitation is 70%.

    Low: 71 °F

    T-storms
    Likely

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly after 1pm.  Partly sunny, with a high near 86. Chance of precipitation is 70%.

    High: 86 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 62.

    Low: 62 °F

    Chance
    T-storms

  • Friday

    Friday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

Today
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 81. Southeast wind 10 to 15 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 69. Southeast wind 5 to 10 mph becoming southwest after midnight. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 85. West wind 5 to 10 mph.
Tuesday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69. Calm wind becoming south around 5 mph after midnight. Winds could gust as high as 10 mph.
Wednesday
Mostly sunny, with a high near 89. Breezy, with a south southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Wednesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 71. Chance of precipitation is 70%.
Thursday
Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 86. Chance of precipitation is 70%.
Thursday Night
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 62.
Friday
Sunny, with a high near 86.
Friday Night
A chance of showers. Mostly clear, with a low around 63.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 62.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 79.
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ABOUT THIS FORECAST

 
Point Forecast:
Mc Cullom Lake IL
 42.36°N 88.29°W
5:51 am CDT Jun 8, 2026
9am CDT Jun 8, 2026-6pm CDT Jun 14, 2026
 
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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