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.

Overcast

63°F

17°C

Humidity 81%
Wind Speed NE 13 mph
Barometer 30.12 in (1019.8 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 14 Oct 12:52 pm CDT
Extended Forecast for

Crystal Lake IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 64. Northeast wind around 10 mph, with gusts as high as 15 mph.

    High: 64 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 54. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 54 °F

    Mostly Cloudy

  • Thursday

    Thursday: Showers. High near 58. East wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 58 °F

    Showers
    Likely then
    Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers between 1am and 4am. Low around 47. East wind 5 to 15 mph becoming northwest in the evening. Winds could gust as high as 25 mph. Chance of precipitation is 80%.

    Low: 47 °F

    Showers

  • Friday

    Friday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 53. Breezy, with a northwest wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 60%.

    High: 53 °F

    Showers
    Likely and
    Breezy

  • Friday Night

    Friday Night: Widespread frost, mainly after 5am. Otherwise, partly cloudy, with a low around 34. Breezy.

    Low: 34 °F

    Partly Cloudy
    and Breezy
    then Frost

  • Saturday

    Saturday: Widespread frost, mainly before 7am. Otherwise, sunny, with a high near 57.

    High: 57 °F

    Frost then
    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 38.

    Low: 38 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 64. Northeast wind around 10 mph, with gusts as high as 15 mph.
Tonight
Mostly cloudy, with a low around 54. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Thursday
Showers. High near 58. East wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers between 1am and 4am. Low around 47. East wind 5 to 15 mph becoming northwest in the evening. Winds could gust as high as 25 mph. Chance of precipitation is 80%.
Friday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 53. Breezy, with a northwest wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 60%.
Friday Night
Widespread frost, mainly after 5am. Otherwise, partly cloudy, with a low around 34. Breezy.
Saturday
Widespread frost, mainly before 7am. Otherwise, sunny, with a high near 57.
Saturday Night
Clear, with a low around 38.
Sunday
Sunny, with a high near 64.
Sunday Night
Mostly clear, with a low around 42.
Monday
Mostly sunny, with a high near 67.
Monday Night
Partly cloudy, with a low around 44.
Tuesday
Sunny, with a high near 70.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Crystal Lake IL
 42.23°N 88.33°W
Last Update:
1:26 pm CDT Oct 14, 2026
Forecast Valid:
1pm CDT Oct 14, 2026-6pm CDT Oct 20, 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