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Northbrook, Illinois Weather Forecast
Northbrook, Illinois Weather
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Click for Hazardous Weather Outlook for Northbrook, Illinois
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Weather Forecast for Northbrook, Illinois : Adams County
Issued: 3:57 pm CST Jan 8, 2026 Latitude: 39.9586572 Longitude: -91.3757047 View on Google Maps

MouseOver for Detail Forecast
Tonight Friday Saturday Sunday Monday Tuesday Wednesday Thursday
40% chance of rain on Tonight Mostly Cloudy on Friday 20% chance of rain & snow on Saturday Sunny on Sunday Sunny on Monday Mostly Cloudy on Tuesday Mostly Cloudy on Wednesday Mostly Sunny on Thursday
Low: 41°F High: 48°F High: 42°F High: 33°F High: 48°F High: 51°F High: 39°F High: 35°F
Low: 34°F Low: 21°F Low: 26°F Low: 36°F Low: 33°F Low: 24°F  
Rain Mostly Cloudy Rain & Snow Sunny Sunny Mostly Cloudy Mostly Cloudy Mostly Sunny
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Current Conditions at
QUINCY - (KUIN)
61°
Clear
as of 8:54 PM CST
Rel. Humidity: 77%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 29.41 in.
Flight Rule: VFR
Wind Data
31 MPH
Gust: 39 MPH
200° South
Cloud Level(s): Clear
Current Conditions at
KEOKUK MUNICIPAL - (KEOK)
61°
Cloudy
as of 8:55 PM CST
Rel. Humidity: 77%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 29.38 in.
Flight Rule: VFR
Wind Data
24 MPH
Gust: 39 MPH
220° Southwest
Cloud Level(s): Scattered at 3200ft, Broken at 4700ft, Solid Overcast at 5500ft
Current Conditions at
FORT MADISON - (KFSW)
57°
Cloudy
Light Rain
as of 8:55 PM CST
Rel. Humidity: 93%
Dew Point: 55°F
Visibility: 10 Miles
Pressure: 29.36 in.
Flight Rule: VFR
Wind Data
15 MPH
180° South
Cloud Level(s): Broken at 3200ft, Broken at 4100ft, Solid Overcast at 6000ft
40% chance of rain Tonight Tonight... A 40 percent chance of rain before midnight. Increasing clouds, with a low around 41. Southwest wind around 16 mph becoming west after midnight. Winds could gust as high as 30 mph.
Mostly Cloudy on Friday Friday... Mostly cloudy, with a high near 48. Northwest wind 10 to 15 mph becoming light north in the afternoon. Winds could gust as high as 25 mph.
30% chance of rain Friday Night Friday Night... A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 34. North wind 3 to 7 mph.
20% chance of rain & snow Saturday Saturday... A slight chance of rain, mixing with snow after 9am, then gradually ending. Mostly cloudy, then gradually becoming sunny, with a high near 42. West wind 7 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 21. Northwest wind 10 to 13 mph, with gusts as high as 23 mph.
Sunny on Sunday Sunday... Sunny, with a high near 33.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 26.
Sunny on Monday Monday... Sunny, with a high near 48.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 36.
Mostly Cloudy on Tuesday Tuesday... Mostly cloudy, with a high near 51.
20% chance of rain Tuesday Night Tuesday Night... A 20 percent chance of rain. Mostly cloudy, with a low around 33.
Mostly Cloudy on Wednesday Wednesday... Mostly cloudy, with a high near 39.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 24.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 35.
Current Radar Image


Sun Almanac for Northbrook, Illinois
Sunrise: 07:27 AM
Sunset: 4:57 PM
Civil Sunrise:06:57 AM
Civil Sunset: 5:28 PM
Nautical Sunrise: 06:23 AM
Nautical Sunset: 6:01 PM
Astro Sunrise: 05:51 AM
Astro Sunset: 6:34 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.