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.

Fair

72°F

22°C

Humidity 91%
Wind Speed Calm
Barometer 29.83 in (1009.5 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 12 Aug 4:52 am CDT
Extended Forecast for

South Barrington IL

  • Overnight

    Overnight: A 20 percent chance of showers and thunderstorms. Areas of fog. Otherwise, mostly cloudy, with a low around 69. Calm wind.

    Low: 69 °F

    Slight Chance
    T-storms and
    Areas Fog

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms, mainly before 3pm. Some of the storms could produce heavy rainfall. Areas of fog before 9am. Otherwise, mostly cloudy, with a high near 82. Light and variable wind becoming west southwest 5 to 10 mph in the afternoon.

    High: 82 °F

    Heavy Rain
    and Areas Fog

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 67. North northwest wind around 5 mph becoming calm in the evening.

    Low: 67 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 79. East wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 50%.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Northeast wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 50%.

    Low: 66 °F

    Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 79.

    High: 79 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 66.

    Low: 66 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm. Mostly cloudy, with a high near 82.

    High: 82 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 70.

    Low: 70 °F

    Chance
    T-storms

Detailed Forecast

Overnight
A 20 percent chance of showers and thunderstorms. Areas of fog. Otherwise, mostly cloudy, with a low around 69. Calm wind.
Wednesday
A 50 percent chance of showers and thunderstorms, mainly before 3pm. Some of the storms could produce heavy rainfall. Areas of fog before 9am. Otherwise, mostly cloudy, with a high near 82. Light and variable wind becoming west southwest 5 to 10 mph in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 67. North northwest wind around 5 mph becoming calm in the evening.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 79. East wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Northeast wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 50%.
Friday
Partly sunny, with a high near 79.
Friday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 66.
Saturday
Showers likely and possibly a thunderstorm before 1pm. Mostly cloudy, with a high near 82.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Sunday
A chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 81.
Sunday Night
Mostly cloudy, with a low around 64.
Monday
Mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 61.
Tuesday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Barrington IL
 42.09°N 88.16°W
Last Update:
3:26 am CDT Aug 12, 2026
Forecast Valid:
5am CDT Aug 12, 2026-6pm CDT Aug 18, 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