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.

Light Rain

39°F

4°C

Humidity 82%
Wind Speed SW 16 mph
Barometer 29.28 in (992.2 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 10 Dec 1:52 am CST
Extended Forecast for

Crystal Lake IL

  • Overnight

    Overnight: A chance of rain before 5am, then a chance of rain and snow. Cloudy, with a low around 31. Breezy, with a west southwest wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.

    Low: 31 °F

    Chance
    Rain/Snow and
    Breezy

  • Wednesday

    Wednesday: Snow, possibly mixed with rain before 11am, then a chance of snow. Temperature falling to around 25 by 5pm. Breezy, with a northwest wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

    High: 32 °F⇓

    Breezy.
    Rain/Snow
    then Slight
    Chance Snow
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow showers before 11pm. Cloudy, then gradually becoming partly cloudy, with a low around 9. Wind chill values as low as 1. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 9 °F

    Slight Chance
    Snow Showers
    then Partly
    Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 21. Wind chill values as low as 1. West northwest wind around 5 mph becoming south southwest in the afternoon. Winds could gust as high as 10 mph.

    High: 21 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Snow likely. Cloudy, with a low around 14. South southwest wind around 5 mph becoming calm. Chance of precipitation is 60%.

    Low: 14 °F

    Snow Likely

  • Friday

    Friday: A 40 percent chance of snow. Mostly cloudy, with a high near 26.

    High: 26 °F

    Chance Snow

  • Friday Night

    Friday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 1.

    Low: 1 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Saturday

    Saturday: A chance of snow. Mostly cloudy and cold, with a high near 9.

    High: 9 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A chance of snow before midnight. Partly cloudy, with a low around -6.

    Low: -6 °F

    Chance Snow
    then Mostly
    Clear

Detailed Forecast

Overnight
A chance of rain before 5am, then a chance of rain and snow. Cloudy, with a low around 31. Breezy, with a west southwest wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.
Wednesday
Snow, possibly mixed with rain before 11am, then a chance of snow. Temperature falling to around 25 by 5pm. Breezy, with a northwest wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
Wednesday Night
A 20 percent chance of snow showers before 11pm. Cloudy, then gradually becoming partly cloudy, with a low around 9. Wind chill values as low as 1. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Partly sunny, with a high near 21. Wind chill values as low as 1. West northwest wind around 5 mph becoming south southwest in the afternoon. Winds could gust as high as 10 mph.
Thursday Night
Snow likely. Cloudy, with a low around 14. South southwest wind around 5 mph becoming calm. Chance of precipitation is 60%.
Friday
A 40 percent chance of snow. Mostly cloudy, with a high near 26.
Friday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 1.
Saturday
A chance of snow. Mostly cloudy and cold, with a high near 9.
Saturday Night
A chance of snow before midnight. Partly cloudy, with a low around -6.
Sunday
Sunny and cold, with a high near 5.
Sunday Night
Partly cloudy, with a low around -4.
Monday
Partly sunny, with a high near 19.
Monday Night
Mostly cloudy, with a low around 10.
Tuesday
Partly sunny, with a high near 32.
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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:
1:56 am CST Dec 10, 2025
Forecast Valid:
2am CST Dec 10, 2025-6pm CST Dec 16, 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