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

Chicago / West Chicago, Dupage Airport (KDPA)

Lat: 41.9°NLon: 88.25°WElev: 758ft.

Fair

78°F

26°C

Humidity 62%
Wind Speed S 10 mph
Barometer 29.85 in (1010.7 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 12 Oct 11:52 am CDT
Extended Forecast for

Crystal Lake IL

  • Columbus Day

    Columbus Day: Mostly sunny, with a high near 85. South southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 85 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 70. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 70 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 80. West wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 80 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely, then showers after 1am. Low around 60. Calm wind. Chance of precipitation is 80%.

    Low: 60 °F

    Chance
    Showers then
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly before 7am. Mostly cloudy, with a high near 68. North northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 68 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

  • Thursday

    Thursday: Showers likely, then showers and possibly a thunderstorm after 10am. High near 63. Chance of precipitation is 80%.

    High: 63 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers before 1am. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 56. Breezy.

    High: 56 °F

    Partly Sunny
    and Breezy

Detailed Forecast

Columbus Day
Mostly sunny, with a high near 85. South southwest wind around 15 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around 70. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday
Sunny, with a high near 80. West wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Showers and thunderstorms likely, then showers after 1am. Low around 60. Calm wind. Chance of precipitation is 80%.
Wednesday
A 30 percent chance of showers, mainly before 7am. Mostly cloudy, with a high near 68. North northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Wednesday Night
Mostly cloudy, with a low around 52.
Thursday
Showers likely, then showers and possibly a thunderstorm after 10am. High near 63. Chance of precipitation is 80%.
Thursday Night
A chance of showers before 1am. Mostly cloudy, with a low around 47.
Friday
Partly sunny, with a high near 56. Breezy.
Friday Night
Partly cloudy, with a low around 34.
Saturday
Sunny, with a high near 55.
Saturday Night
Mostly clear, with a low around 37.
Sunday
Sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Crystal Lake IL
 42.23°N 88.36°W
Last Update:
12:17 pm CDT Oct 12, 2026
Forecast Valid:
12pm CDT Oct 12, 2026-6pm CDT Oct 18, 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