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Northbrook, Illinois Weather Forecast
Northbrook, Illinois Weather
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Click for Winter Weather Advisory for Northbrook, Illinois
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Weather Forecast for Northbrook, Illinois : Adams County
Issued: 8:06 pm CST Nov 30, 2025 Latitude: 39.9586572 Longitude: -91.3757047 View on Google Maps

MouseOver for Detail Forecast
Tonight Monday Tuesday Wednesday Thursday Friday Saturday Sunday
Cloudy on Tonight 100% chance of snow on Monday Partly Sunny on Tuesday Mostly Cloudy on Wednesday Mostly Sunny on Thursday 30% chance of snow on Friday Mostly Cloudy on Saturday Mostly Cloudy on Sunday
Low: 18°F High: 26°F High: 29°F High: 35°F High: 16°F High: 30°F High: 33°F High: 30°F
Low: 14°F Low: 22°F Low: 5°F Low: 6°F Low: 22°F Low: 22°F  
Cloudy Snow Partly Sunny Mostly Cloudy Mostly Sunny Snow Mostly Cloudy Mostly Cloudy
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Current Conditions at
QUINCY - (KUIN)
21°
Cloudy
as of 7:54 PM CST
Rel. Humidity: 85%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.48 in.
Flight Rule: MVFR
Wind Data
7 MPH
330° Northwest
Cloud Level(s): Solid Overcast at 1600ft
Current Conditions at
KEOKUK MUNICIPAL - (KEOK)
Mostly Cloudy
as of 8:15 PM CST
Wind Data
Calm
Current Conditions at
FORT MADISON - (KFSW)
23°
Feels like 13°F
Cloudy
as of 8:15 PM CST
Rel. Humidity: 79%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.48 in.
Flight Rule: MVFR
Wind Data
9 MPH
320° Northwest
Cloud Level(s): Solid Overcast at 1400ft
Cloudy on Tonight Tonight... Cloudy, with a low around 18. Northwest wind around 5 mph becoming calm in the evening.
100% chance of snow Monday Monday... Snow, mainly after noon. High near 26. Southeast wind around 6 mph becoming calm in the afternoon. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
90% chance of snow Monday Night Monday Night... Snow, mainly before 9pm. Low around 14. Calm wind becoming west 5 to 7 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 29. Light and variable wind becoming southwest around 6 mph in the morning.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 22. South wind 5 to 8 mph.
Mostly Cloudy on Wednesday Wednesday... Mostly cloudy, with a high near 35.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 5.
Mostly Sunny on Thursday Thursday... Mostly sunny and cold, with a high near 16.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 6.
30% chance of snow Friday Friday... A 30 percent chance of snow. Mostly cloudy, with a high near 30.
20% chance of snow Friday Night Friday Night... A 20 percent chance of snow. Mostly cloudy, with a low around 22.
Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 33.
Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 22.
Mostly Cloudy on Sunday Sunday... Mostly cloudy, with a high near 30.
Current Radar Image


Sun Almanac for Northbrook, Illinois
Sunrise: 07:08 AM
Sunset: 4:41 PM
Civil Sunrise:06:38 AM
Civil Sunset: 5:11 PM
Nautical Sunrise: 06:04 AM
Nautical Sunset: 5:45 PM
Astro Sunrise: 05:31 AM
Astro Sunset: 6:17 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.