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.

Overcast

52°F

11°C

Humidity 83%
Wind Speed E 6 mph
Barometer 30.35 in (1028.2 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 31 Oct 12:52 am CDT
Extended Forecast for

Crystal Lake IL

  • Overnight

    Overnight: Isolated showers. Cloudy, with a low around 49. East wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.

    Low: 49 °F

    Isolated
    Showers

  • Saturday

    Saturday: Scattered showers, mainly before 3pm. Cloudy, with a high near 61. South southeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 40%.

    High: 61 °F

    Scattered
    Showers

  • Saturday Night

    Saturday Night: Isolated showers before midnight. Cloudy, with a low around 50. East wind around 5 mph becoming calm after midnight. Chance of precipitation is 20%.

    Low: 50 °F

    Isolated
    Showers then
    Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 66. South southeast wind around 5 mph, with gusts as high as 10 mph.

    High: 66 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 52. South southeast wind 5 to 10 mph.

    Low: 52 °F

    Mostly Cloudy

  • Monday

    Monday: A 50 percent chance of showers, mainly after 1pm. Cloudy, with a high near 66.

    High: 66 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Monday Night

    Monday Night: Showers likely, mainly after 1am. Cloudy, with a low around 58. Chance of precipitation is 70%.

    Low: 58 °F

    Chance
    Showers then
    Showers
    Likely

  • Tuesday

    Tuesday: Showers. Mostly cloudy, with a high near 70. Breezy.

    High: 70 °F

    Showers and
    Breezy

  • Tuesday Night

    Tuesday Night: Showers likely. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Showers
    Likely

Detailed Forecast

Overnight
Isolated showers. Cloudy, with a low around 49. East wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.
Saturday
Scattered showers, mainly before 3pm. Cloudy, with a high near 61. South southeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 40%.
Saturday Night
Isolated showers before midnight. Cloudy, with a low around 50. East wind around 5 mph becoming calm after midnight. Chance of precipitation is 20%.
Sunday
Mostly cloudy, with a high near 66. South southeast wind around 5 mph, with gusts as high as 10 mph.
Sunday Night
Mostly cloudy, with a low around 52. South southeast wind 5 to 10 mph.
Monday
A 50 percent chance of showers, mainly after 1pm. Cloudy, with a high near 66.
Monday Night
Showers likely, mainly after 1am. Cloudy, with a low around 58. Chance of precipitation is 70%.
Tuesday
Showers. Mostly cloudy, with a high near 70. Breezy.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 52.
Wednesday
A chance of showers. Mostly cloudy, with a high near 64.
Wednesday Night
Mostly cloudy, with a low around 47.
Thursday
A chance of showers. Mostly sunny, with a high near 64.
Thursday Night
Mostly cloudy, with a low around 46.
Friday
Partly sunny, with a high near 61.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Crystal Lake IL
 42.23°N 88.36°W
Last Update:
1:40 am CDT Oct 31, 2026
Forecast Valid:
1am CDT Oct 31, 2026-6pm CST Nov 6, 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