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.

Fog

49°F

9°C

Humidity 100%
Wind Speed SE 3 mph
Barometer 29.95 in (1013.9 mb)
Dewpoint 49°F (9°C)
Visibility 0.50 mi
Last update 17 Apr 1:53 am CDT
Extended Forecast for

Chicago IL

Dense Fog Advisory April 17, 02:00am until April 17, 10:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory April 17, 02:00am until April 17, 10:00am

    NOW until 10:00am Fri

    Dense Fog Advisory

  • Overnight

    Low: 44 °F

    Dense Fog

  • Friday

    Friday: Widespread dense fog, mainly before 8am. Otherwise, partly sunny, with a high near 81. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 81 °F

    Dense Fog
    then Mostly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Showers and thunderstorms before 3am, then showers likely. Some of the storms could produce heavy rainfall. Low around 46. Breezy, with a south wind 15 to 20 mph becoming west after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    Low: 46 °F

    Heavy Rain
    and Breezy
    then Heavy
    Rain

  • Saturday

    Saturday: A 30 percent chance of showers, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 51. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 25 mph.

    High: 51 °F

    Chance
    Showers then
    Mostly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 38. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

  • Monday

    Monday: Areas of frost before 7am. Otherwise, sunny, with a high near 55.

    High: 55 °F

    Areas Frost
    then Sunny

Detailed Forecast

Overnight
Widespread dense fog. Otherwise, mostly cloudy, with a low around 44. East southeast wind around 5 mph.
Friday
Widespread dense fog, mainly before 8am. Otherwise, partly sunny, with a high near 81. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Friday Night
Showers and thunderstorms before 3am, then showers likely. Some of the storms could produce heavy rainfall. Low around 46. Breezy, with a south wind 15 to 20 mph becoming west after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Saturday
A 30 percent chance of showers, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 51. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 38. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday
Mostly sunny, with a high near 51.
Sunday Night
Mostly clear, with a low around 37.
Monday
Areas of frost before 7am. Otherwise, sunny, with a high near 55.
Monday Night
Partly cloudy, with a low around 47.
Tuesday
Partly sunny, with a high near 73.
Tuesday Night
Partly cloudy, with a low around 52.
Wednesday
Mostly sunny, with a high near 62.
Wednesday Night
Partly cloudy, with a low around 52.
Thursday
Mostly sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chicago IL
 41.84°N 87.68°W
Last Update:
1:21 am CDT Apr 17, 2026
Forecast Valid:
2am CDT Apr 17, 2026-6pm CDT Apr 23, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation