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

86°F

30°C

Humidity 65%
Wind Speed NW 10 mph
Barometer 29.93 in (1013.0 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 16 Aug 3:52 pm CDT
Extended Forecast for

Crystal Lake IL

  • This Afternoon

    This Afternoon: Isolated showers and thunderstorms. Partly sunny, with a high near 84. West northwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 84 °F

    Isolated
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 63. North northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 63 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 79. Calm wind becoming north northwest around 5 mph in the afternoon. Winds could gust as high as 10 mph.

    High: 79 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 62. Northwest wind around 5 mph becoming calm.

    Low: 62 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 80. West southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 80 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 63. Chance of precipitation is 70%.

    Low: 63 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Partly sunny, with a high near 76.

    High: 76 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Isolated showers and thunderstorms. Partly sunny, with a high near 84. West northwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 63. North northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Monday
Mostly sunny, with a high near 79. Calm wind becoming north northwest around 5 mph in the afternoon. Winds could gust as high as 10 mph.
Monday Night
Mostly clear, with a low around 62. Northwest wind around 5 mph becoming calm.
Tuesday
A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 80. West southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 63. Chance of precipitation is 70%.
Wednesday
Partly sunny, with a high near 76.
Wednesday Night
Partly cloudy, with a low around 58.
Thursday
Mostly sunny, with a high near 76.
Thursday Night
Partly cloudy, with a low around 58.
Friday
Sunny, with a high near 77.
Friday Night
A chance of showers. Partly cloudy, with a low around 61.
Saturday
Mostly sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Crystal Lake IL
 42.23°N 88.33°W
Last Update:
2:51 pm CDT Aug 16, 2026
Forecast Valid:
3pm CDT Aug 16, 2026-6pm CDT Aug 22, 2026
 
Forecast Discussion
 
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Additional Resources

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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