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

74°F

23°C

Humidity 71%
Wind Speed NE 10 mph
Barometer 30.06 in (1017.6 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 17 Aug 10:52 am CDT
Extended Forecast for

Arlington Heights IL

  • Today

    Today: Isolated showers before 4pm. Mostly sunny, with a high near 79. North wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.

    High: 79 °F

    Isolated
    Showers

  • Tonight

    Tonight: Mostly clear, with a low around 63. Calm wind becoming west southwest around 5 mph after midnight.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers before 10am, then a chance of showers and thunderstorms after 3pm. Increasing clouds, with a high near 81. West southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    High: 81 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 1am, then a chance of showers after 1am. Mostly cloudy, with a low around 65. West southwest wind 5 to 10 mph. Chance of precipitation is 70%.

    Low: 65 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Mostly sunny, with a high near 78. North northeast wind around 5 mph.

    High: 78 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

Detailed Forecast

Today
Isolated showers before 4pm. Mostly sunny, with a high near 79. North wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.
Tonight
Mostly clear, with a low around 63. Calm wind becoming west southwest around 5 mph after midnight.
Tuesday
A chance of showers before 10am, then a chance of showers and thunderstorms after 3pm. Increasing clouds, with a high near 81. West southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 1am, then a chance of showers after 1am. Mostly cloudy, with a low around 65. West southwest wind 5 to 10 mph. Chance of precipitation is 70%.
Wednesday
Mostly sunny, with a high near 78. North northeast wind around 5 mph.
Wednesday Night
Partly cloudy, with a low around 62.
Thursday
Sunny, with a high near 79.
Thursday Night
Partly cloudy, with a low around 61.
Friday
Mostly sunny, with a high near 79.
Friday Night
A chance of showers after 1am. Partly cloudy, with a low around 63.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 78.
Saturday Night
Partly cloudy, with a low around 62.
Sunday
Mostly sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Arlington Heights IL
 42.09°N 87.98°W
Last Update:
10:42 am CDT Aug 17, 2026
Forecast Valid:
11am CDT Aug 17, 2026-6pm CDT Aug 23, 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