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

Flooding Threats in the West and the Southeast

The active monsoon season will continue the rest of the week for portions of the Southwest into the Great Basin and Rockies. A stalling front and Gulf moisture will produce slow-moving storms capable of producing heavy rain and flash flooding along the Gulf Coast. Localized areas of critical fire weather conditions are possible in the Pacific Northwest into the Northern Plains Thursday. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Mostly Cloudy

73°F

23°C

Humidity 79%
Wind Speed Vrbl 3 mph
Barometer 30.10 in (1017.9 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 11 Aug 12:55 am CDT
Extended Forecast for

Grayslake IL

  • Overnight

    Overnight: Partly cloudy, with a low around 65. West northwest wind around 5 mph becoming north northeast.

    Partly Cloudy

    Low: 65 °F

  • Thursday

    Thursday: Mostly sunny, with a high near 76. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    Mostly Sunny

    High: 76 °F

  • Thursday
    Night

    Thursday Night: Mostly clear, with a low around 57. North northeast wind around 10 mph, with gusts as high as 15 mph.

    Mostly Clear

    Low: 57 °F

  • Friday

    Friday: Mostly sunny, with a high near 76. North northeast wind around 5 mph becoming east in the morning. Winds could gust as high as 10 mph.

    Mostly Sunny

    High: 76 °F

  • Friday
    Night

    Friday Night: Mostly cloudy, with a low around 61. East wind around 5 mph becoming south after midnight.

    Mostly Cloudy

    Low: 61 °F

  • Saturday

    Saturday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 84.

    Slight Chance
    Showers

    High: 84 °F

  • Saturday
    Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 65.

    Chance
    Showers

    Low: 65 °F

  • Sunday

    Sunday: Mostly sunny, with a high near 80.

    Mostly Sunny

    High: 80 °F

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 63.

    Partly Cloudy

    Low: 63 °F

Detailed Forecast

Overnight
Partly cloudy, with a low around 65. West northwest wind around 5 mph becoming north northeast.
Thursday
Mostly sunny, with a high near 76. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Thursday Night
Mostly clear, with a low around 57. North northeast wind around 10 mph, with gusts as high as 15 mph.
Friday
Mostly sunny, with a high near 76. North northeast wind around 5 mph becoming east in the morning. Winds could gust as high as 10 mph.
Friday Night
Mostly cloudy, with a low around 61. East wind around 5 mph becoming south after midnight.
Saturday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 84.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 65.
Sunday
Mostly sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 63.
Monday
Mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 61.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
Mostly clear, with a low around 60.
Wednesday
Mostly sunny, with a high near 76.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Grayslake IL
 42.35°N 88.02°W
Last Update:
12:15 am CDT Aug 11, 2022
Forecast Valid:
1am CDT Aug 11, 2022-6pm CDT Aug 17, 2022
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation