National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Mississippi Valley Summer Heat Wave; Severe Thunderstorms and Flooding Possible to the North

A dangerous summer heat wave will continue much of the Plains, Mid/Lower Mississippi Valley, Southeast U.S. today and Thursday. Areas of severe thunderstorms may occur today and again on Thursday from parts of the northern/central Rockies and High Plains into the Ohio Valley and Carolinas. Excessive rainfall over similar areas may bring flash flooding today and Thursday. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

A Few Clouds

75°F

24°C

Humidity 74%
Wind Speed NE 14 G 21 mph
Barometer 30.00 in (1014.8 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 6 Jul 2:55 pm CDT
Extended Forecast for

Grayslake IL

  • This
    Afternoon

    This Afternoon: Partly sunny, with a high near 76. Northeast wind around 10 mph.

    Partly Sunny

    High: 76 °F

  • Tonight

    Tonight: Mostly cloudy, with a low around 65. North northeast wind 5 to 10 mph.

    Mostly Cloudy

    Low: 65 °F

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 76. East wind around 5 mph.

    Chance
    T-storms

    High: 76 °F

  • Thursday
    Night

    Thursday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. North northeast wind around 5 mph, with gusts as high as 10 mph.

    Chance
    T-storms

    Low: 65 °F

  • Friday

    Friday: Partly sunny, with a high near 75. Northeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Partly Sunny

    High: 75 °F

  • Friday
    Night

    Friday Night: Partly cloudy, with a low around 60.

    Partly Cloudy

    Low: 60 °F

  • Saturday

    Saturday: Sunny, with a high near 75.

    Sunny

    High: 75 °F

  • Saturday
    Night

    Saturday Night: Clear, with a low around 58.

    Clear

    Low: 58 °F

  • Sunday

    Sunday: Sunny, with a high near 80.

    Sunny

    High: 80 °F

Detailed Forecast

This Afternoon
Partly sunny, with a high near 76. Northeast wind around 10 mph.
Tonight
Mostly cloudy, with a low around 65. North northeast wind 5 to 10 mph.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 76. East wind around 5 mph.
Thursday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. North northeast wind around 5 mph, with gusts as high as 10 mph.
Friday
Partly sunny, with a high near 75. Northeast wind 5 to 15 mph, with gusts as high as 20 mph.
Friday Night
Partly cloudy, with a low around 60.
Saturday
Sunny, with a high near 75.
Saturday Night
Clear, with a low around 58.
Sunday
Sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 63.
Monday
Mostly sunny, with a high near 85.
Monday Night
Mostly clear, with a low around 66.
Tuesday
Sunny, with a high near 82.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Grayslake IL
 42.35°N 88.02°W
Last Update:
2:16 pm CDT Jul 6, 2022
Forecast Valid:
3pm CDT Jul 6, 2022-6pm CDT Jul 12, 2022
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation