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

39°F

4°C

Humidity 60%
Wind Speed SW 10 mph
Barometer 29.99 in (1016.4 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 18 Mar 1:52 pm CDT
Extended Forecast for

Mount Prospect IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 42. Southwest wind 10 to 15 mph.

    High: 42 °F

    Mostly Sunny

  • Tonight

    Tonight: A 20 percent chance of showers after 3am. Increasing clouds, with a low around 33. West southwest wind around 5 mph becoming calm in the evening.

    Low: 33 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A 30 percent chance of showers, mainly before 9am. Partly sunny, with a high near 47. North northwest wind around 5 mph becoming southeast in the afternoon.

    High: 47 °F

    Chance
    Showers then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 38. East northeast wind around 5 mph becoming southwest after midnight. Winds could gust as high as 10 mph.

    Low: 38 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 62. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 62 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 52.

    High: 52 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 42. Southwest wind 10 to 15 mph.
Tonight
A 20 percent chance of showers after 3am. Increasing clouds, with a low around 33. West southwest wind around 5 mph becoming calm in the evening.
Thursday
A 30 percent chance of showers, mainly before 9am. Partly sunny, with a high near 47. North northwest wind around 5 mph becoming southeast in the afternoon.
Thursday Night
Mostly cloudy, with a low around 38. East northeast wind around 5 mph becoming southwest after midnight. Winds could gust as high as 10 mph.
Friday
Mostly cloudy, with a high near 62. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Friday Night
Mostly cloudy, with a low around 39.
Saturday
Mostly sunny, with a high near 65.
Saturday Night
Partly cloudy, with a low around 43.
Sunday
Mostly cloudy, with a high near 52.
Sunday Night
Mostly cloudy, with a low around 30.
Monday
Mostly sunny, with a high near 42.
Monday Night
Mostly cloudy, with a low around 30.
Tuesday
Mostly cloudy, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mount Prospect IL
 42.06°N 87.93°W
Last Update:
1:31 pm CDT Mar 18, 2026
Forecast Valid:
2pm CDT Mar 18, 2026-6pm CDT Mar 24, 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