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.

A Few Clouds

67°F

19°C

Humidity 84%
Wind Speed N 6 mph
Barometer 30.00 in (1015.7 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 29 Jul 7:52 am CDT
Extended Forecast for

Crystal Lake IL

  • Today

    Today: Sunny, with a high near 82. Calm wind becoming north northeast around 5 mph in the morning.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 62. East northeast wind around 5 mph becoming calm.

    Low: 62 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 86. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 86 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 64. Southwest wind around 5 mph becoming calm in the evening.

    Low: 64 °F

    Mostly Cloudy

  • Friday

    Friday: Showers likely, with thunderstorms also possible after 4pm. Cloudy, with a high near 74. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 74 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: Rain and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 62. Chance of precipitation is 80%.

    Low: 62 °F

    Heavy Rain

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 75. Chance of precipitation is 70%.

    High: 75 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 82. Calm wind becoming north northeast around 5 mph in the morning.
Tonight
Mostly clear, with a low around 62. East northeast wind around 5 mph becoming calm.
Thursday
Mostly sunny, with a high near 86. Calm wind becoming west southwest around 5 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 64. Southwest wind around 5 mph becoming calm in the evening.
Friday
Showers likely, with thunderstorms also possible after 4pm. Cloudy, with a high near 74. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Friday Night
Rain and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 62. Chance of precipitation is 80%.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 75. Chance of precipitation is 70%.
Saturday Night
Partly cloudy, with a low around 61.
Sunday
Mostly sunny, with a high near 78.
Sunday Night
Mostly clear, with a low around 61.
Monday
Sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 63.
Tuesday
Sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Crystal Lake IL
 42.23°N 88.33°W
Last Update:
2:01 am CDT Jul 29, 2026
Forecast Valid:
8am CDT Jul 29, 2026-6pm CDT Aug 4, 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