Severe Thunderstorms in the Northern Plains and Upper Midwest; Critical Fire Weather in the West; Dangerous Heat in the Central and Eastern U.S.

Severe thunderstorms are likely today across the northern Plains and into the upper Mississippi Valley. Gusty winds and dry conditions will result in widespread critical fire weather through Saturday across parts of the Four Corners region and the Great Basin. A significant and dangerous heat wave will expand from the Central U.S. into the Eastern U.S this weekend through much of next week. Read More >

Current conditions at

Chicago / Wheeling, Pal-Waukee Airport (KPWK)

Lat: 42.12°NLon: 87.9°WElev: 646ft.

Fair

78°F

26°C

Humidity 64%
Wind Speed SW 10 G 22 mph
Barometer 29.97 in (1014.4 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 20 Jun 11:52 am CDT
Extended Forecast for

Crystal Lake IL

Heat Advisory June 21, 10:00am until June 24, 12:00am
Click here for hazard details and duration
Heat Advisory
  • This Afternoon

    This Afternoon: A 30 percent chance of showers, mainly before 1pm.  Cloudy, then gradually becoming mostly sunny, with a high near 84. South southwest wind around 15 mph, with gusts as high as 30 mph.

    High: 84 °F

    Chance
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 73. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 73 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 93. Heat index values as high as 105. Breezy, with a south southwest wind 15 to 25 mph, with gusts as high as 40 mph.

    High: 93 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 77. Breezy, with a southwest wind 15 to 25 mph, with gusts as high as 40 mph.

    Low: 77 °F

    Mostly Clear
    and Breezy
    then Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 95. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 95 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 76.

    Low: 76 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 96.

    High: 96 °F

    Hot

  • Monday Night

    Monday Night: A chance of showers and thunderstorms.  Partly cloudy, with a low around 73.

    Low: 73 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms.  Mostly sunny, with a high near 90.

    High: 90 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
A 30 percent chance of showers, mainly before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 84. South southwest wind around 15 mph, with gusts as high as 30 mph.
Tonight
Partly cloudy, with a low around 73. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday
Sunny, with a high near 93. Heat index values as high as 105. Breezy, with a south southwest wind 15 to 25 mph, with gusts as high as 40 mph.
Saturday Night
Mostly clear, with a low around 77. Breezy, with a southwest wind 15 to 25 mph, with gusts as high as 40 mph.
Sunday
Sunny and hot, with a high near 95. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly clear, with a low around 76.
Monday
Sunny and hot, with a high near 96.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Wednesday
Showers and thunderstorms likely. Partly sunny, with a high near 86.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
Crystal Lake IL
 42.23°N 88.33°W
11:56 am CDT Jun 20, 2025
12pm CDT Jun 20, 2025-6pm CDT Jun 26, 2025
 
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Additional Resources

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