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

Hazardous Weather Conditions

Current conditions at

Chicago / Wheeling, Pal-Waukee Airport (KPWK)

Lat: 42.12°NLon: 87.9°WElev: 646ft.

Fair

31°F

-1°C

Humidity 96%
Wind Speed Calm
Barometer 30.11 in (1020.3 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 2 May 5:52 am CDT
Extended Forecast for

Crystal Lake IL

Frost Advisory May 2, 06:20am until May 2, 08:00am
Click here for hazard details and duration
...
  •  
    Frost Advisory May 2, 06:20am until May 2, 08:00am

    NOW until 8:00am Sat

    Frost Advisory

  • Today

    High: 55 °F

    Frost then
    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 41. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 41 °F

    Partly Cloudy

  • Sunday

    Sunday: A 40 percent chance of showers before 1pm. Partly sunny, with a high near 66. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 35 mph.

    High: 66 °F

    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 44. West wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 44 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers after 4pm. Sunny, with a high near 74. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 74 °F

    Sunny then
    Slight Chance
    Showers and
    Breezy

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 46. Chance of precipitation is 40%.

    Low: 46 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A 50 percent chance of showers. Mostly cloudy, with a high near 57.

    High: 57 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers before 1am. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Chance
    Showers

Detailed Forecast

Today
Widespread frost before 8am. Otherwise, mostly sunny, with a high near 55. Light west wind becoming northwest 5 to 10 mph in the morning. Winds could gust as high as 15 mph.
Tonight
Partly cloudy, with a low around 41. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday
A 40 percent chance of showers before 1pm. Partly sunny, with a high near 66. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 35 mph.
Sunday Night
Mostly clear, with a low around 44. West wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
A 20 percent chance of showers after 4pm. Sunny, with a high near 74. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 46. Chance of precipitation is 40%.
Tuesday
A 50 percent chance of showers. Mostly cloudy, with a high near 57.
Tuesday Night
A chance of showers before 1am. Mostly cloudy, with a low around 39.
Wednesday
Mostly cloudy, with a high near 55.
Wednesday Night
Mostly cloudy, with a low around 39.
Thursday
Mostly cloudy, with a high near 56.
Thursday Night
Partly cloudy, with a low around 39.
Friday
Mostly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Crystal Lake IL
 42.23°N 88.33°W
Last Update:
3:30 am CDT May 2, 2026
Forecast Valid:
6am CDT May 2, 2026-6pm CDT May 8, 2026
 
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