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

Hazardous Weather Conditions

Current conditions at

Chicago, Chicago Midway Airport (KMDW)

Lat: 41.78°NLon: 87.76°WElev: 617ft.

Fair

39°F

4°C

Humidity 60%
Wind Speed SW 6 mph
Barometer 30.08 in (1019.1 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 19 Apr 1:53 am CDT
Extended Forecast for

Westmont IL

Frost Advisory April 19, 02:18am until April 19, 09:00am
Freeze Warning April 20, 12:00am until April 20, 09:00am
Click here for hazard details and duration
Frost Advisory
Freeze Warning
  •  
    Frost Advisory April 19, 02:18am until April 19, 09:00am

    NOW until 9:00am Sun

    Frost Advisory

  • Overnight

    Low: 36 °F

    Patchy Frost

  • Sunday

    Sunday: A 40 percent chance of showers, mainly after noon. Areas of frost before 8am. Otherwise, increasing clouds, with a high near 49. Breezy, with a west southwest wind 5 to 10 mph becoming west northwest 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 49 °F

    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: A 20 percent chance of showers before 8pm. Widespread frost, mainly after 5am. Otherwise, mostly cloudy, then gradually becoming clear, with a low around 32. North wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 32 °F

    Slight Chance
    Showers then
    Frost

  • Monday

    Monday: Widespread frost before 8am. Otherwise, sunny, with a high near 52. North wind around 5 mph becoming south in the afternoon. Winds could gust as high as 10 mph.

    High: 52 °F

    Frost then
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 44. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 44 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

Detailed Forecast

Overnight
Patchy frost after 3am. Otherwise, mostly clear, with a low around 36. West southwest wind around 5 mph.
Sunday
A 40 percent chance of showers, mainly after noon. Areas of frost before 8am. Otherwise, increasing clouds, with a high near 49. Breezy, with a west southwest wind 5 to 10 mph becoming west northwest 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Sunday Night
A 20 percent chance of showers before 8pm. Widespread frost, mainly after 5am. Otherwise, mostly cloudy, then gradually becoming clear, with a low around 32. North wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
Widespread frost before 8am. Otherwise, sunny, with a high near 52. North wind around 5 mph becoming south in the afternoon. Winds could gust as high as 10 mph.
Monday Night
Partly cloudy, with a low around 44. South wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 73.
Tuesday Night
Mostly clear, with a low around 51.
Wednesday
Sunny, with a high near 75.
Wednesday Night
Mostly clear, with a low around 56.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
Showers likely. Mostly cloudy, with a low around 62.
Friday
Showers likely. Mostly cloudy, with a high near 73.
Friday Night
A chance of showers. Mostly cloudy, with a low around 48.
Saturday
Mostly sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Westmont IL
 41.8°N 87.97°W
Last Update:
1:21 am CDT Apr 19, 2026
Forecast Valid:
2am CDT Apr 19, 2026-6pm CDT Apr 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

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Chance of Precipitation