On July 7, 2015, NWS implemented changes to the icons depicted on all of its point-forecast pages. Changes include new icon images with increased clarity, 6-hour increments for rapidly changing weather and new color blocks to highlight forecast hazards.

A page depicting all of the new icon images can be accessed here: www.weather.gov/forecast-icons

Changes to the icons were based on analysis of 6,700 public comments collected in 2014. Also, many of these changes are based on the results of a research project led by the National Center for Atmospheric Research.

Users are encouraged to continue to provide comments regarding these changes via email at icons@noaa.gov. NWS will continue to analyze incoming feedback and refine the icons as necessary. Any substantial change to the icons will be facilitated through the NWS public comment/review process.

Heat continues across parts of central, eastern U.S.

Higher-than-normal temperatures will continue across parts of the central and eastern U.S. on Thursday with afternoon highs reaching 20-25 degrees above normal for some locations. One of the warmest areas will be the northern Plains, where high temperatures could reach 100 degrees. Remember to limit time spent outside during excessive heat and take proper precautions to avoid heat-related illness.
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Hazardous Weather Conditions

Current conditions at

Chicago / Wheeling, Pal-Waukee Airport (KPWK)

Lat: 42.12°NLon: 87.9°WElev: 646ft.

Fair

83°F

28°C

Humidity 61%
Wind Speed SW 9 mph
Barometer 29.95 in (1013.6 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 3 Sep 9:52 am CDT
Extended Forecast for

Crystal Lake IL

  • Today

    Today: A 20 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 88. Heat index values as high as 95. West wind 10 to 15 mph.

    Slight Chance
    T-storms

    High: 88 °F

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 67. East wind around 5 mph.

    Slight Chance
    T-storms

    Low: 67 °F

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 87. Calm wind becoming east around 5 mph in the afternoon.

    Mostly Sunny
    then Slight
    Chance
    T-storms

    High: 87 °F

  • Friday
    Night

    Friday Night: Partly cloudy, with a low around 67. East wind around 5 mph.

    Partly Cloudy

    Low: 67 °F

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 88. South wind around 5 mph.

    Mostly Sunny
    then Slight
    Chance
    T-storms

    High: 88 °F

  • Saturday
    Night

    Saturday Night: Partly cloudy, with a low around 68.

    Partly Cloudy

    Low: 68 °F

  • Sunday

    Sunday: Mostly sunny, with a high near 88.

    Mostly Sunny

    High: 88 °F

  • Sunday
    Night

    Sunday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 70.

    Chance
    T-storms

    Low: 70 °F

  • Labor
    Day

    Labor Day: A chance of showers and thunderstorms.  Partly sunny, with a high near 83.

    Chance
    T-storms

    High: 83 °F

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88. Heat index values as high as 95. West wind 10 to 15 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 67. East wind around 5 mph.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. Calm wind becoming east around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 67. East wind around 5 mph.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. South wind around 5 mph.
Saturday Night
Partly cloudy, with a low around 68.
Sunday
Mostly sunny, with a high near 88.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Labor Day
A chance of showers and thunderstorms. Partly sunny, with a high near 83.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 62.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 80.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 73.
  Click Map For Forecast
Point Forecast:
Crystal Lake IL
 42.23°N 88.33°W
9:16 am CDT Sep 3, 2015
10am CDT Sep 3, 2015-6pm CDT Sep 9, 2015
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Graph

National Digital Forecast Database