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Northbrook, Illinois Weather Forecast
Northbrook, Illinois Weather
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Weather Forecast for Northbrook, Illinois : Adams County
Issued: 4:26 am CST Jan 21, 2026 Latitude: 39.9586572 Longitude: -91.3757047 View on Google Maps

MouseOver for Detail Forecast
Overnight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
20% chance of snow on Overnight Sunny on Wednesday Increasing Clouds on Thursday Mostly Cloudy on Friday 30% chance of snow on Saturday Partly Sunny on Sunday Sunny on Monday Mostly Sunny on Tuesday
Low: 34°F High: 40°F High: 35°F High: 6°F High: 9°F High: 18°F High: 21°F High: 33°F
Low: 19°F Low: 0 °F Low: -3°F Low: 3°F Low: 2°F Low: 11°F  
Snow Sunny Increasing Clouds Mostly Cloudy Snow Partly Sunny Sunny Mostly Sunny
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Current Conditions at
QUINCY - (KUIN)
36°
Feels like 28°F
Cloudy
as of 4:54 AM CST
Rel. Humidity: 43%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
9 MPH
230° Southwest
Cloud Level(s): Solid Overcast at 9000ft
Current Conditions at
KEOKUK MUNICIPAL - (KEOK)
32°
Feels like 24°F
Cloudy
as of 5:15 AM CST
Rel. Humidity: 46%
Dew Point: 14°F
Visibility: 10 Miles
Pressure: 29.98 in.
Flight Rule: VFR
Wind Data
9 MPH
300° Northwest
Cloud Level(s): Few at 2500ft, Broken at 4700ft, Solid Overcast at 6500ft
Current Conditions at
FORT MADISON - (KFSW)
30°
Feels like 20°F
Mostly Clear
as of 5:15 AM CST
Rel. Humidity: 54%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 29.98 in.
Flight Rule: VFR
Wind Data
12 MPH
280° West
Cloud Level(s): Few at 11000ft
20% chance of snow Overnight Overnight... A chance of flurries. Mostly cloudy, with a steady temperature around 34. Southwest wind around 9 mph.
Sunny on Wednesday Wednesday... Sunny, with a high near 40. West wind 9 to 16 mph, with gusts as high as 28 mph.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 19. Blustery, with a northwest wind 15 to 20 mph becoming west 5 to 10 mph after midnight. Winds could gust as high as 31 mph.
Increasing Clouds on Thursday Thursday... Increasing clouds, with a high near 35. West wind around 6 mph.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 0. West wind 5 to 14 mph becoming north after midnight. Winds could gust as high as 25 mph.
Mostly Cloudy on Friday Friday... Mostly cloudy and cold, with a high near 6.
Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around -3.
30% chance of snow Saturday Saturday... A 30 percent chance of snow after noon. Mostly cloudy and cold, with a high near 9.
40% chance of snow Saturday Night Saturday Night... A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 3.
Partly Sunny on Sunday Sunday... Partly sunny and cold, with a high near 18.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 2.
Sunny on Monday Monday... Sunny, with a high near 21.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 11.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 33.
Current Radar Image


Sun Almanac for Northbrook, Illinois
Sunrise: 07:22 AM
Sunset: 5:12 PM
Civil Sunrise:06:53 AM
Civil Sunset: 5:41 PM
Nautical Sunrise: 06:20 AM
Nautical Sunset: 6:14 PM
Astro Sunrise: 05:48 AM
Astro Sunset: 6:46 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.