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Northbrook, Illinois Weather Forecast
Northbrook, Illinois Weather
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Weather Forecast for Northbrook, Illinois : Adams County
Issued: 10:51 am CST Jan 20, 2026 Latitude: 39.9586572 Longitude: -91.3757047 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Wednesday Thursday Friday Saturday Sunday Monday
Mostly Sunny on Today Mostly Cloudy on Tonight Partly Sunny on Wednesday Mostly Sunny on Thursday Mostly Cloudy on Friday 30% chance of snow on Saturday Sunny on Sunday Sunny on Monday
High: 34°F Low: 31°F High: 40°F High: 33°F High: 8°F High: 11°F High: 22°F High: 27°F
Low: 20°F Low: 4°F Low: -1°F Low: 2°F Low: 5°F  
Mostly Sunny Mostly Cloudy Partly Sunny Mostly Sunny Mostly Cloudy Snow Sunny Sunny
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Current Conditions at
QUINCY - (KUIN)
21°
Feels like 9°F
Clear
as of 9:54 AM CST
Rel. Humidity: 53%
Dew Point: 7°F
Visibility: 10 Miles
Pressure: 30.36 in.
Flight Rule: VFR
Wind Data
12 MPH
200° South
Cloud Level(s): Clear
Current Conditions at
KEOKUK MUNICIPAL - (KEOK)
23°
Clear
as of 10:35 AM CST
Rel. Humidity: 38%
Dew Point: 1°F
Visibility: 10 Miles
Pressure: 30.35 in.
Flight Rule: VFR
Wind Data
5 MPH
Cloud Level(s): Clear
Current Conditions at
FORT MADISON - (KFSW)
21°
Clear
as of 10:35 AM CST
Rel. Humidity: 48%
Dew Point: 5°F
Visibility: 10 Miles
Pressure: 30.35 in.
Flight Rule: VFR
Wind Data
6 MPH
120° Southeast
Cloud Level(s): Clear
Mostly Sunny on Today Today... Mostly sunny, with a high near 34. South wind 7 to 10 mph.

Mostly Cloudy on Tonight Tonight... Mostly cloudy, with a steady temperature around 31. Southeast wind 7 to 11 mph becoming west after midnight. Winds could gust as high as 24 mph.

Partly Sunny on Wednesday Wednesday... Partly sunny, then gradually becoming sunny, with a high near 40. West wind 9 to 13 mph, with gusts as high as 24 mph.

Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 20. Southwest wind 6 to 14 mph becoming northwest after midnight. Winds could gust as high as 25 mph.

Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 33. West wind 3 to 7 mph.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 4.

Mostly Cloudy on Friday Friday... Mostly cloudy and cold, with a high near 8.

20% chance of snow Friday Night Friday Night... A 20 percent chance of snow. Mostly cloudy, with a low around -1.

30% chance of snow Saturday Saturday... A 30 percent chance of snow, mainly after noon. Mostly cloudy and cold, with a high near 11.

20% chance of snow Saturday Night Saturday Night... A 20 percent chance of snow. Mostly cloudy, with a low around 2.

Sunny on Sunday Sunday... Sunny, with a high near 22.

Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 5.

Sunny on Monday Monday... Sunny, with a high near 27.

Current Radar Image


Sun Almanac for Northbrook, Illinois
Sunrise: 07:23 AM
Sunset: 5:10 PM
Civil Sunrise:06:53 AM
Civil Sunset: 5:40 PM
Nautical Sunrise: 06:20 AM
Nautical Sunset: 6:13 PM
Astro Sunrise: 05:48 AM
Astro Sunset: 6:45 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.