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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago, Chicago Midway Airport (KMDW)

Lat: 41.78°NLon: 87.76°WElev: 617ft.

Overcast

70°F

21°C

Humidity 64%
Wind Speed E 14 mph
Barometer 30.18 in (1021.2 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 18 Sep 2:53 pm CDT
Extended Forecast for

4 Miles NE Chicago IL

Flood Watch September 19, 04:00am until September 19, 01:00pm
Click here for hazard details and duration
Flood Watch

  • This Afternoon

    This Afternoon: A 40 percent chance of showers, mainly before 5pm. Mostly cloudy, with a high near 71. East northeast wind around 15 mph, with gusts as high as 20 mph.

    High: 71 °F

    Chance
    Showers

  • Tonight

    Tonight: A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 63. East southeast wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    Low: 63 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms, mainly before 1pm. High near 74. South southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    High: 74 °F

    T-storms then
    T-storms
    Likely

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 10pm. Low around 65. East southeast wind around 10 mph becoming northwest in the evening. Chance of precipitation is 80%.

    Low: 65 °F

    T-storms

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 68. Breezy, with a northeast wind 15 to 25 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.

    High: 68 °F

    Showers
    Likely and
    Breezy

  • Sunday Night

    Sunday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 58. Breezy.

    Low: 58 °F

    Chance
    Showers and
    Breezy

  • Monday

    Monday: A 50 percent chance of showers. Cloudy, with a high near 67. Breezy.

    High: 67 °F

    Chance
    Showers and
    Breezy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 56. Breezy.

    Low: 56 °F

    Cloudy and
    Breezy then
    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 64.

    High: 64 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
A 40 percent chance of showers, mainly before 5pm. Mostly cloudy, with a high near 71. East northeast wind around 15 mph, with gusts as high as 20 mph.
Tonight
A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 63. East southeast wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Saturday
Showers and thunderstorms, mainly before 1pm. High near 74. South southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Saturday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 10pm. Low around 65. East southeast wind around 10 mph becoming northwest in the evening. Chance of precipitation is 80%.
Sunday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 68. Breezy, with a northeast wind 15 to 25 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 58. Breezy.
Monday
A 50 percent chance of showers. Cloudy, with a high near 67. Breezy.
Monday Night
Mostly cloudy, with a low around 56. Breezy.
Tuesday
Mostly cloudy, with a high near 64.
Tuesday Night
Mostly cloudy, with a low around 57.
Wednesday
Mostly cloudy, with a high near 64.
Wednesday Night
Mostly cloudy, with a low around 58.
Thursday
Partly sunny, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NE Chicago IL
 41.88°N 87.62°W
Last Update:
2:51 pm CDT Sep 18, 2026
Forecast Valid:
3pm CDT Sep 18, 2026-6pm CDT Sep 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