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

Heavy Rain and Storms in the East; Fire Weather Threats in the West

A slow moving frontal system will bring strong to severe storms and locally heavy rain from the Northeast to the southern Plains. Meanwhile, Fire Weather threats remain elevated over the northern Inter-Mountain West, as Red Flag Warnings and Fire weather watches are in effect. Also, the potential for isolated dry thunderstorms remains possible across this portion of the West. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Partly Cloudy

77°F

25°C

Humidity 82%
Wind Speed NE 8 mph
Barometer 29.94 in (1012.9 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 17 Aug 3:55 pm CDT
Extended Forecast for

Grayslake IL

  • This
    Afternoon

    This Afternoon: Isolated showers and thunderstorms. Partly sunny, with a high near 79. East northeast wind around 5 mph. Chance of precipitation is 20%.

    Isolated
    T-storms

    High: 79 °F

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 64. Northeast wind around 5 mph becoming calm in the evening.

    Partly Cloudy
    then Patchy
    Fog

    Low: 64 °F

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 82. Northeast wind 5 to 10 mph.

    Patchy Fog
    then Mostly
    Sunny

    High: 82 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 62. North northeast wind 5 to 10 mph.

    Mostly Clear

    Low: 62 °F

  • Sunday

    Sunday: Mostly sunny, with a high near 82. Calm wind becoming east around 5 mph in the afternoon.

    Mostly Sunny

    High: 82 °F

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 66.

    Partly Cloudy

    Low: 66 °F

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79.

    Chance
    Showers then
    Chance
    T-storms

    High: 79 °F

  • Monday
    Night

    Monday Night: Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm after 1am. Cloudy, with a low around 65.

    T-storms
    Likely

    Low: 65 °F

  • Tuesday

    Tuesday: A chance of showers, mainly after 1pm. Mostly cloudy, with a high near 76.

    Chance
    Showers

    High: 76 °F

Detailed Forecast

This Afternoon
Isolated showers and thunderstorms. Partly sunny, with a high near 79. East northeast wind around 5 mph. Chance of precipitation is 20%.
Tonight
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 64. Northeast wind around 5 mph becoming calm in the evening.
Saturday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 82. Northeast wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 62. North northeast wind 5 to 10 mph.
Sunday
Mostly sunny, with a high near 82. Calm wind becoming east around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 66.
Monday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79.
Monday Night
Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm after 1am. Cloudy, with a low around 65.
Tuesday
A chance of showers, mainly after 1pm. Mostly cloudy, with a high near 76.
Tuesday Night
Partly cloudy, with a low around 57.
Wednesday
Sunny, with a high near 76.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
Sunny, with a high near 79.
Thursday Night
A slight chance of showers. Mostly clear, with a low around 60.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 79.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Grayslake IL
 42.35°N 88.02°W
Last Update:
3:17 pm CDT Aug 17, 2018
Forecast Valid:
4pm CDT Aug 17, 2018-6pm CDT Aug 24, 2018
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation