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

Chicago / Wheeling, Pal-Waukee Airport (KPWK)

Lat: 42.12°NLon: 87.9°WElev: 646ft.

Fair

80°F

27°C

Humidity 58%
Wind Speed E 6 mph
Barometer 29.99 in (1015.3 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 3 Aug 3:52 pm CDT
Extended Forecast for

Deer Park IL

  • Tonight

    Tonight: Mostly clear, with a low around 64. East southeast wind around 5 mph becoming calm in the evening.

    Low: 64 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 83 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 69. South southwest wind around 5 mph.

    Low: 69 °F

    Partly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 75. Southwest wind around 5 mph. Chance of precipitation is 70%.

    High: 75 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 4am, then showers likely. Low around 65. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.

    Low: 65 °F

    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 76. Chance of precipitation is 50%.

    High: 76 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 64. East southeast wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 83. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday Night
A 30 percent chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 69. South southwest wind around 5 mph.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 75. Southwest wind around 5 mph. Chance of precipitation is 70%.
Wednesday Night
Showers and possibly a thunderstorm before 4am, then showers likely. Low around 65. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 76. Chance of precipitation is 50%.
Thursday Night
Partly cloudy, with a low around 60.
Friday
Mostly sunny, with a high near 81.
Friday Night
Mostly clear, with a low around 63.
Saturday
Mostly sunny, with a high near 83.
Saturday Night
Mostly clear, with a low around 67.
Sunday
Mostly sunny, with a high near 85.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 84.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Deer Park IL
 42.16°N 88.1°W
Last Update:
1:21 pm CDT Aug 3, 2026
Forecast Valid:
4pm CDT Aug 3, 2026-6pm CDT Aug 10, 2026
 
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