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Brentwood, Illinois Weather Forecast
Brentwood, Illinois Weather
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Weather Forecast for Brentwood, Illinois : Cook County
Issued: 3:11 am CST Nov 5, 2025 Latitude: 42.1528032 Longitude: -88.0481305 View on Google Maps

MouseOver for Detail Forecast
Overnight Wednesday Thursday Friday Saturday Sunday Monday Veterans Day
Cloudy on Overnight Partly Sunny on Wednesday Increasing Clouds on Thursday 30% chance of rain on Friday 20% chance of rain on Saturday 20% chance of rain & snow on Sunday Mostly Sunny on Monday Partly Sunny on Veterans Day
Low: 50°F High: 58°F High: 56°F High: 63°F High: 48°F High: 37°F High: 36°F High: 43°F
Low: 32°F Low: 47°F Low: 36°F Low: 31°F Low: 22°F Low: 23°F  
Cloudy Partly Sunny Increasing Clouds Rain Rain Rain & Snow Mostly Sunny Partly Sunny
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Current Conditions at
CHICAGO/WHEELING - (KPWK)
54°
Clear
as of 2:52 AM CST
Rel. Humidity: 76%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 29.81 in.
Flight Rule: VFR
Wind Data
7 MPH
240° Southwest
Cloud Level(s): Clear
Current Conditions at
CHICAGO-OHARE - (KORD)
54°
Mostly Clear
as of 2:51 AM CST
Rel. Humidity: 76%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 29.79 in.
Flight Rule: VFR
Wind Data
10 MPH
Gust: 23 MPH
220° Southwest
Cloud Level(s): Few at 25000ft
Current Conditions at
WEST CHICAGO - (KDPA)
52°
Clear
as of 2:52 AM CST
Rel. Humidity: 81%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 29.81 in.
Flight Rule: VFR
Wind Data
10 MPH
220° Southwest
Cloud Level(s): Clear
Current Conditions at
WAUKEGAN - (KUGN)
52°
Clear
as of 2:51 AM CST
Rel. Humidity: 81%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 29.78 in.
Flight Rule: VFR
Wind Data
12 MPH
240° Southwest
Cloud Level(s): Clear
Cloudy on Overnight Overnight... Partly cloudy, with a low around 50. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

Partly Sunny on Wednesday Wednesday... Partly sunny, then gradually becoming sunny, with a high near 58. Breezy, with a west southwest wind 10 to 20 mph becoming north northwest in the morning. Winds could gust as high as 35 mph.

Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 32. West northwest wind 5 to 10 mph becoming light after midnight.

Increasing Clouds on Thursday Thursday... Increasing clouds, with a high near 56. Light and variable wind becoming south 10 to 15 mph in the morning. Winds could gust as high as 20 mph.

80% chance of rain Thursday Night Thursday Night... Showers, mainly after midnight. Low around 47. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.

30% chance of rain Friday Friday... A 30 percent chance of showers before noon. Mostly sunny, with a high near 63.

Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 36.

20% chance of rain Saturday Saturday... A chance of rain after noon. Partly sunny, with a high near 48.

20% chance of rain & snow Saturday Night Saturday Night... Rain likely before midnight, then a chance of rain and snow. Mostly cloudy, with a low around 31.

20% chance of rain & snow Sunday Sunday... A chance of rain and snow before noon. Mostly sunny, with a high near 37.

Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 22.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 36.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 23.

Partly Sunny on Veterans Day Veterans Day... Partly sunny, with a high near 43.

Current Radar Image


Sun Almanac for Brentwood, Illinois
Sunrise: 06:31 AM
Sunset: 4:41 PM
Civil Sunrise:06:01 AM
Civil Sunset: 5:10 PM
Nautical Sunrise: 05:28 AM
Nautical Sunset: 5:43 PM
Astro Sunrise: 04:55 AM
Astro Sunset: 6:16 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.