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

Hazardous Weather Conditions

Current conditions at

Chicago / West Chicago, Dupage Airport (KDPA)

Lat: 41.9°NLon: 88.25°WElev: 758ft.

Mostly Cloudy

32°C

89°F

Humidity 52%
Wind Speed SE 13 km/h
Barometer 1014.0 mb (29.96 in)
Dewpoint 21°C (69°F)
Visibility 16 km
Heat Index34°C (94°F)
Last update 15 Jul 3:52 pm CDT
Extended Forecast for

Crystal Lake IL

  • Tonight

    Tonight: A 20 percent chance of showers between 11pm and 2am. Partly cloudy, with a low around 22. South southwest wind 5 to 10 km/h.

    Low: 22 °C

    Slight Chance
    Showers

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 4pm. Partly sunny, with a high near 31. Heat index values as high as 36. South southwest wind 5 to 15 km/h increasing to 15 to 25 km/h in the afternoon. Winds could gust as high as 35 km/h. Chance of precipitation is 60%. New rainfall amounts between 5 and 7.5 mm possible.

    High: 31 °C

    Partly Sunny
    then T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 19. Southwest wind 10 to 20 km/h becoming west northwest after midnight. Chance of precipitation is 60%. New rainfall amounts between 5 and 7.5 mm possible.

    Low: 19 °C

    T-storms
    Likely

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 22. Northwest wind 15 to 20 km/h becoming north northeast in the afternoon.

    High: 22 °C

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 13. Northeast wind 10 to 15 km/h, with gusts as high as 25 km/h.

    Low: 13 °C

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 24.

    High: 24 °C

    Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 16.

    Low: 16 °C

    Partly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly before 1pm. Mostly cloudy, with a high near 28.

    High: 28 °C

    T-storms
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 18.

    Low: 18 °C

    Chance
    T-storms

Detailed Forecast

Tonight
A 20 percent chance of showers between 11pm and 2am. Partly cloudy, with a low around 22. South southwest wind 5 to 10 km/h.
Wednesday
Showers and thunderstorms likely, mainly after 4pm. Partly sunny, with a high near 31. Heat index values as high as 36. South southwest wind 5 to 15 km/h increasing to 15 to 25 km/h in the afternoon. Winds could gust as high as 35 km/h. Chance of precipitation is 60%. New rainfall amounts between 5 and 7.5 mm possible.
Wednesday Night
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 19. Southwest wind 10 to 20 km/h becoming west northwest after midnight. Chance of precipitation is 60%. New rainfall amounts between 5 and 7.5 mm possible.
Thursday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 22. Northwest wind 15 to 20 km/h becoming north northeast in the afternoon.
Thursday Night
Partly cloudy, with a low around 13. Northeast wind 10 to 15 km/h, with gusts as high as 25 km/h.
Friday
Sunny, with a high near 24.
Friday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 16.
Saturday
Showers and thunderstorms likely, mainly before 1pm. Mostly cloudy, with a high near 28.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 18.
Sunday
Partly sunny, with a high near 27.
Sunday Night
Partly cloudy, with a low around 17.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 28.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 19.
Tuesday
Mostly sunny, with a high near 30.
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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:
4:12 pm CDT Jul 15, 2025
Forecast Valid:
4pm CDT Jul 15, 2025-6pm CDT Jul 22, 2025
 
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