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

Hazardous Weather Conditions

Current conditions at

Chicago / Wheeling, Pal-Waukee Airport (KPWK)

Lat: 42.12°NLon: 87.9°WElev: 646ft.

Mostly Cloudy

82°F

28°C

Humidity 74%
Wind Speed SW 8 mph
Barometer 29.95 in (1013.6 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 1 Jul 1:52 am CDT
Extended Forecast for

Deerfield IL

Extreme Heat Warning July 1, 02:26am until July 3, 12:00am
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 1, 02:26am until July 3, 12:00am

    NOW until 12:00am Fri

    Extreme Heat Warning

  • Overnight

    Low: 79 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 96. Heat index values as high as 103. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 96 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 79. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 79 °F

    Mostly Clear

  • Thursday

    Thursday: A 10 percent chance of showers and thunderstorms after 5pm. Sunny and hot, with a high near 95. Heat index values as high as 101. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 95 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 78. Southwest wind 5 to 10 mph.

    Low: 78 °F

    Chance
    T-storms

  • Friday

    Friday: Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 92. Chance of precipitation is 70%.

    High: 92 °F

    T-storms
    Likely

  • Friday Night

    Friday Night: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.

    Low: 70 °F

    T-storms
    Likely

  • Independence Day

    Independence Day: Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 83.

    High: 83 °F

    T-storms
    Likely

Detailed Forecast

Overnight
Clear, with a low around 79. Southwest wind around 10 mph, with gusts as high as 15 mph.
Wednesday
Sunny and hot, with a high near 96. Heat index values as high as 103. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly clear, with a low around 79. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday
A 10 percent chance of showers and thunderstorms after 5pm. Sunny and hot, with a high near 95. Heat index values as high as 101. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
A 50 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 78. Southwest wind 5 to 10 mph.
Friday
Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 92. Chance of precipitation is 70%.
Friday Night
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
Independence Day
Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 83.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 69.
Sunday
A chance of showers. Partly sunny, with a high near 84.
Sunday Night
Mostly cloudy, with a low around 67.
Monday
Mostly sunny, with a high near 84.
Monday Night
Partly cloudy, with a low around 67.
Tuesday
Mostly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Deerfield IL
 42.17°N 87.86°W
Last Update:
1:21 am CDT Jul 1, 2026
Forecast Valid:
2am CDT Jul 1, 2026-6pm CDT Jul 7, 2026
 
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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