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

Chicago / Wheeling, Pal-Waukee Airport (KPWK)

Lat: 42.12°NLon: 87.9°WElev: 646ft.

Fair

46°F

8°C

Humidity 71%
Wind Speed NE 8 mph
Barometer 29.92 in (1013.4 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 20 Mar 6:52 pm CDT
Extended Forecast for

Crystal Lake IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 37. North northeast wind 5 to 10 mph becoming east southeast after midnight.

    Low: 37 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 71. East southeast wind 5 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 25 mph.

    High: 71 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 48. South southwest wind around 10 mph becoming west northwest after midnight. Winds could gust as high as 20 mph.

    Low: 48 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of rain after 1pm. Cloudy, with a high near 50. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 50 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 29. North wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 29 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 46.

    High: 46 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 54.

    High: 54 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 37. North northeast wind 5 to 10 mph becoming east southeast after midnight.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 71. East southeast wind 5 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
Partly cloudy, with a low around 48. South southwest wind around 10 mph becoming west northwest after midnight. Winds could gust as high as 20 mph.
Sunday
A 20 percent chance of rain after 1pm. Cloudy, with a high near 50. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly cloudy, with a low around 29. North wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
Mostly sunny, with a high near 46.
Monday Night
Mostly cloudy, with a low around 30.
Tuesday
Mostly cloudy, with a high near 54.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
Mostly cloudy, with a high near 50.
Wednesday Night
Mostly cloudy, with a low around 40.
Thursday
A chance of showers. Mostly cloudy, with a high near 64.
Thursday Night
Mostly cloudy, with a low around 28.
Friday
Partly sunny, with a high near 42.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Crystal Lake IL
 42.23°N 88.33°W
Last Update:
4:06 pm CDT Mar 20, 2026
Forecast Valid:
7pm CDT Mar 20, 2026-6pm CDT Mar 27, 2026
 
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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