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.

Overcast

27°F

-3°C

Humidity 69%
Wind Speed NW 9 mph
Barometer 30.18 in (1022.8 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 21 Feb 9:52 pm CST
Extended Forecast for

Crystal Lake IL

  • Tonight

    Tonight: A 40 percent chance of snow, mainly before 3am. Cloudy, with a low around 20. Northwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 20 °F

    Chance Snow

  • Sunday

    Sunday: A chance of flurries before 3pm. Mostly cloudy, with a high near 27. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 27 °F

    Chance
    Flurries and
    Blustery

  • Sunday Night

    Sunday Night: Cloudy, then gradually becoming partly cloudy, with a low around 14. Wind chill values as low as -1. Blustery, with a north northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 14 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Monday

    Monday: Sunny, with a high near 28. Wind chill values as low as -1. North northwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 28 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 17. Calm wind becoming south around 5 mph after midnight. Winds could gust as high as 15 mph.

    Low: 17 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 40.

    High: 40 °F

    Chance Snow

  • Tuesday Night

    Tuesday Night: A slight chance of rain and snow before midnight. Mostly cloudy, with a low around 27. Chance of precipitation is 20%.

    Low: 27 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 40.

    High: 40 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A chance of rain before midnight, then a chance of snow. Mostly cloudy, with a low around 21.

    Low: 21 °F

    Chance Rain
    then Chance
    Snow

Detailed Forecast

Tonight
A 40 percent chance of snow, mainly before 3am. Cloudy, with a low around 20. Northwest wind around 15 mph, with gusts as high as 25 mph.
Sunday
A chance of flurries before 3pm. Mostly cloudy, with a high near 27. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Cloudy, then gradually becoming partly cloudy, with a low around 14. Wind chill values as low as -1. Blustery, with a north northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Monday
Sunny, with a high near 28. Wind chill values as low as -1. North northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly cloudy, with a low around 17. Calm wind becoming south around 5 mph after midnight. Winds could gust as high as 15 mph.
Tuesday
A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 40.
Tuesday Night
A slight chance of rain and snow before midnight. Mostly cloudy, with a low around 27. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a high near 40.
Wednesday Night
A chance of rain before midnight, then a chance of snow. Mostly cloudy, with a low around 21.
Thursday
A chance of snow before noon. Mostly sunny, with a high near 38.
Thursday Night
Mostly clear, with a low around 24.
Friday
Sunny, with a high near 50.
Friday Night
Partly cloudy, with a low around 30.
Saturday
Partly sunny, with a high near 45.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Crystal Lake IL
 42.25°N 88.33°W
Last Update:
10:31 pm CST Feb 21, 2026
Forecast Valid:
10pm CST Feb 21, 2026-6pm CST Feb 28, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation