Summit, Illinois Weather
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Weather Forecast for Summit, Illinois : Cook County
Issued: 3:41 am CDT Jun 4, 2025 Latitude: 41.7880876 Longitude: -87.810334 View on Google Maps

MouseOver for Detail Forecast
Overnight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
70% chance of rain on Overnight 90% chance of rain on Wednesday Mostly Sunny on Thursday 20% chance of  on Friday Mostly Sunny on Saturday Rain on Sunday Mostly Sunny on Monday Mostly Sunny on Tuesday
Low: 69°F High: 59 °F High: 71°F High: 74°F High: 73°F High: 79°F High: 75°F High: 72°F
Low: 56°F Low: 57°F Low: 58°F Low: 57°F Low: 59°F Low: 56°F  
Rain Rain Mostly Sunny Partly Sunny Mostly Sunny Rain Mostly Sunny Mostly Sunny
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Current Conditions at
CHICAGO-MIDWAY - (KMDW)
70°
Cloudy
Light Rain Mist
as of 4:25 AM CDST
Rel. Humidity: 88%
Dew Point: 66°F
Visibility: 5 Miles
Pressure: 29.87 in.
Flight Rule: MVFR
Wind Data
9 MPH
220° Southwest
Cloud Level(s): Scattered at 1600ft, Broken at 4300ft, Solid Overcast at 10000ft
Current Conditions at
CHICAGO-OHARE - (KORD)
68°
Cloudy
Light Rain Mist
as of 4:38 AM CDST
Rel. Humidity: 93%
Dew Point: 66°F
Visibility: 4 Miles
Pressure: 29.87 in.
Flight Rule: MVFR
Wind Data
8 MPH
210° Southwest
Cloud Level(s): Broken at 1100ft, Broken at 1700ft, Solid Overcast at 12000ft
Current Conditions at
ROMEOVILLE WFO - (KLOT)
68°
Cloudy
Rain Mist
as of 4:35 AM CDST
Rel. Humidity: 100%
Dew Point: 68°F
Visibility: 3 Miles
Pressure: 29.89 in.
Flight Rule: IFR
Wind Data
12 MPH
200° South
Cloud Level(s): Broken at 600ft, Solid Overcast at 1000ft
70% chance of rain Overnight Overnight... Rain likely. Cloudy, with a steady temperature around 69. Southwest wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

90% chance of rain Wednesday Wednesday... Rain, mainly before 1pm, then a chance of showers after 1pm. Temperature falling to around 59 by 1pm. West southwest wind around 10 mph becoming north northeast in the morning. Winds could gust as high as 15 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

30% chance of rain Wednesday Night Wednesday Night... A 30 percent chance of showers, mainly before 8pm. Mostly cloudy, with a low around 56. North wind 5 to 10 mph.

Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 71. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 57. Northeast wind 5 to 10 mph.

20% chance of  Friday Friday... A 20 percent chance of showers. Partly sunny, with a high near 74.

20% chance of thunderstorms Friday Night Friday Night... A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 58.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 73.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 57.

Rain on Sunday Sunday... Showers likely after 1pm. Mostly sunny, with a high near 79.

20% chance of rain Sunday Night Sunday Night... A chance of showers. Partly cloudy, with a low around 59.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 75.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 56.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 72.

Current Radar Image


Sun Almanac for Summit, Illinois
Sunrise: 05:17 AM
Sunset: 8:22 PM
Civil Sunrise:04:44 AM
Civil Sunset: 8:56 PM
Nautical Sunrise: 04:01 AM
Nautical Sunset: 9:39 PM
Astro Sunrise: 03:10 AM
Astro Sunset: 10:30 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.