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Northbrook, Illinois Weather Forecast
Northbrook, Illinois Weather
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Weather Forecast for Northbrook, Illinois : Adams County
Issued: 12:21 am CST Dec 17, 2025 Latitude: 39.9586572 Longitude: -91.3757047 View on Google Maps

MouseOver for Detail Forecast
Overnight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
Partly Cloudy on Overnight Mostly Sunny on Wednesday 70% chance of rain on Thursday Sunny on Friday Partly Sunny on Saturday Mostly Sunny on Sunday Partly Sunny on Monday Partly Sunny on Tuesday
Low: 29°F High: 44°F High: 37 °F High: 38°F High: 51°F High: 40°F High: 43°F High: 52°F
Low: 50 °F Low: 19°F Low: 32°F Low: 25°F Low: 26°F Low: 34°F  
Partly Cloudy Mostly Sunny Rain Sunny Partly Sunny Mostly Sunny Partly Sunny Partly Sunny
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Current Conditions at
QUINCY - (KUIN)
43°
Feels like 36°F
Clear
as of 11:54 PM CST
Rel. Humidity: 75%
Dew Point: 36°F
Visibility: 10 Miles
Pressure: 29.90 in.
Flight Rule: VFR
Wind Data
12 MPH
240° Southwest
Cloud Level(s): Clear
Current Conditions at
KEOKUK MUNICIPAL - (KEOK)
39°
Mostly Cloudy
as of 12:15 AM CST
Rel. Humidity: 75%
Dew Point: 32°F
Visibility: 10 Miles
Pressure: 29.90 in.
Flight Rule: VFR
Wind Data
8 MPH
260° West
Cloud Level(s): Broken at 12000ft
Current Conditions at
FORT MADISON - (KFSW)
43°
Feels like 36°F
Clear
as of 12:15 AM CST
Rel. Humidity: 65%
Dew Point: 32°F
Visibility: 10 Miles
Pressure: 29.88 in.
Flight Rule: VFR
Wind Data
10 MPH
250° West
Cloud Level(s): Clear
Partly Cloudy on Overnight Overnight... Cloudy, then gradually becoming partly cloudy, with a low around 29. West wind 5 to 7 mph.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 44. Calm wind becoming southeast 5 to 8 mph in the afternoon.
50% chance of rain Wednesday Night Wednesday Night... A 50 percent chance of showers after midnight. Increasing clouds, with a temperature rising to around 50 by 4am. South wind 8 to 14 mph, with gusts as high as 25 mph.
70% chance of rain Thursday Thursday... Showers likely before noon. Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 37 by 5pm. South wind 14 to 17 mph becoming northwest in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 70%.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 19. Northwest wind 9 to 17 mph, with gusts as high as 31 mph.
Sunny on Friday Friday... Sunny, with a high near 38.
Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 32.
Partly Sunny on Saturday Saturday... Partly sunny, with a high near 51.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 25.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 40.
Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 26.
Partly Sunny on Monday Monday... Partly sunny, with a high near 43.
Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 34.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 52.
Current Radar Image


Sun Almanac for Northbrook, Illinois
Sunrise: 07:22 AM
Sunset: 4:42 PM
Civil Sunrise:06:51 AM
Civil Sunset: 5:13 PM
Nautical Sunrise: 06:17 AM
Nautical Sunset: 5:47 PM
Astro Sunrise: 05:44 AM
Astro Sunset: 6:20 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.