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.

Overcast

57°F

14°C

Humidity 67%
Wind Speed N 13 mph
Barometer 30.15 in (1020.8 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 20 May 1:52 am CDT
Extended Forecast for

Deer Park IL

  • Overnight

    Overnight: Partly cloudy, with a low around 50. North northwest wind around 10 mph, with gusts as high as 15 mph.

    Low: 50 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 58. Northeast wind 10 to 15 mph.

    High: 58 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 43. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 43 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 60. East northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 60 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 47. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 47 °F

    Mostly Cloudy

  • Friday

    Friday: A 50 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 63.

    High: 63 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Friday Night

    Friday Night: Showers likely before 10pm, then showers likely and possibly a thunderstorm between 10pm and 1am, then a chance of showers after 1am. Cloudy, with a low around 52. Chance of precipitation is 70%.

    Low: 52 °F

    Showers
    Likely

  • Saturday

    Saturday: Mostly cloudy, with a high near 71.

    High: 71 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 50. North northwest wind around 10 mph, with gusts as high as 15 mph.
Wednesday
Mostly sunny, with a high near 58. Northeast wind 10 to 15 mph.
Wednesday Night
Partly cloudy, with a low around 43. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday
Partly sunny, with a high near 60. East northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 47. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
A 50 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 63.
Friday Night
Showers likely before 10pm, then showers likely and possibly a thunderstorm between 10pm and 1am, then a chance of showers after 1am. Cloudy, with a low around 52. Chance of precipitation is 70%.
Saturday
Mostly cloudy, with a high near 71.
Saturday Night
Mostly cloudy, with a low around 54.
Sunday
Partly sunny, with a high near 76.
Sunday Night
Mostly cloudy, with a low around 55.
Memorial Day
Partly sunny, with a high near 78.
Monday Night
Mostly cloudy, with a low around 58.
Tuesday
Partly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Deer Park IL
 42.16°N 88.07°W
Last Update:
1:30 am CDT May 20, 2026
Forecast Valid:
2am CDT May 20, 2026-6pm CDT May 26, 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