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

42°F

6°C

Humidity 49%
Wind Speed W 7 mph
Barometer 30.07 in (1018.9 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 18 Apr 11:53 pm CDT
Extended Forecast for

Oak Brook IL

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

    NOW until 9:00am Sun

    Frost Advisory

  • Overnight

    Low: 36 °F

    Patchy Frost

  • Sunday

    Sunday: A slight chance of rain and snow showers before 9am, then a chance of rain showers. Areas of frost before 7am. Otherwise, increasing clouds, with a high near 50. West southwest wind 5 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 40%.

    High: 50 °F

    Slight Chance
    Rain/Snow
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Widespread frost, mainly after 5am. Otherwise, mostly clear, with a low around 32. North wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 32 °F

    Partly Cloudy
    then Frost

  • Monday

    Monday: Widespread frost before 8am. Otherwise, sunny, with a high near 54. Northeast wind around 5 mph becoming south in the afternoon. Winds could gust as high as 10 mph.

    High: 54 °F

    Frost then
    Sunny

  • Monday Night

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

    Low: 44 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 51.

    Low: 51 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

Detailed Forecast

Overnight
Patchy frost after 3am. Otherwise, mostly clear, with a low around 36. West southwest wind 5 to 10 mph.
Sunday
A slight chance of rain and snow showers before 9am, then a chance of rain showers. Areas of frost before 7am. Otherwise, increasing clouds, with a high near 50. West southwest wind 5 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 40%.
Sunday Night
Widespread frost, mainly after 5am. Otherwise, mostly 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 54. Northeast wind around 5 mph becoming south in the afternoon. Winds could gust as high as 10 mph.
Monday Night
Mostly cloudy, with a low around 44. South wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 72.
Tuesday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 51.
Wednesday
Mostly sunny, with a high near 73.
Wednesday Night
Mostly clear, with a low around 55.
Thursday
Mostly sunny, with a high near 81.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 62.
Friday
Showers likely. Mostly cloudy, with a high near 72.
Friday Night
A chance of showers. Mostly cloudy, with a low around 46.
Saturday
Partly sunny, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Oak Brook IL
 41.82°N 87.94°W
Last Update:
9:30 pm CDT Apr 18, 2026
Forecast Valid:
12am CDT Apr 19, 2026-6pm CDT Apr 25, 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