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Northbrook, Illinois Weather Forecast
Northbrook, Illinois Weather
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Click for Cold Weather Advisory for Northbrook, Illinois
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Weather Forecast for Northbrook, Illinois : Adams County
Issued: 2:06 am CST Jan 18, 2026 Latitude: 39.9586572 Longitude: -91.3757047 View on Google Maps

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Overnight Sunday M.L.King Day Tuesday Wednesday Thursday Friday Saturday
Cloudy on Overnight 30% chance of snow on Sunday Sunny on M.L.King Day Mostly Sunny on Tuesday Mostly Sunny on Wednesday Sunny on Thursday Partly Sunny on Friday 30% chance of snow on Saturday
Low: 11°F High: 31°F High: 17°F High: 36°F High: 38°F High: 35°F High: 37°F High: 22°F
Low: 6 °F Low: 9 °F Low: 26°F Low: 18°F Low: 22°F Low: 14°F  
Cloudy Snow Sunny Mostly Sunny Mostly Sunny Sunny Partly Sunny Snow
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Current Conditions at
QUINCY - (KUIN)
10°
Feels like -4°F
Cloudy
as of 2:54 AM CST
Rel. Humidity: 66%
Dew Point: 1°F
Visibility: 10 Miles
Pressure: 30.19 in.
Flight Rule: MVFR
Wind Data
12 MPH
260° West
Cloud Level(s): Solid Overcast at 2400ft
Current Conditions at
KEOKUK MUNICIPAL - (KEOK)
9°
Mostly Cloudy
as of 2:55 AM CST
Rel. Humidity: 65%
Dew Point: -0°F
Visibility: 10 Miles
Pressure: 30.16 in.
Flight Rule: VFR
Wind Data
8 MPH
230° Southwest
Cloud Level(s): Few at 1500ft, Scattered at 3200ft, Broken at 3700ft
Current Conditions at
FORT MADISON - (KFSW)
9°
Mostly Clear
as of 2:55 AM CST
Rel. Humidity: 71%
Dew Point: 1°F
Visibility: 10 Miles
Pressure: 30.15 in.
Flight Rule: VFR
Wind Data
7 MPH
220° Southwest
Cloud Level(s): Few at 2000ft
Cloudy on Overnight Overnight... Cloudy, with a low around 11. West wind around 8 mph.
30% chance of snow Sunday Sunday... A chance of flurries before 9am, then a chance of snow, mainly between 9am and 5pm. Mostly cloudy, with a high near 31. Southwest wind 8 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
20% chance of snow Sunday Night Sunday Night... A chance of flurries before 9pm. Partly cloudy, with a low around 6. Wind chill values as low as -10. Blustery, with a northwest wind 17 to 23 mph, with gusts as high as 32 mph.
Sunny on M.L.King Day M.L.King Day... Sunny and cold, with a high near 17. Wind chill values as low as -10. Northwest wind 7 to 15 mph, with gusts as high as 26 mph.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 9. West wind around 6 mph becoming south after midnight.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 36.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 26.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 38.
Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 18.
Sunny on Thursday Thursday... Sunny, with a high near 35.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 22.
Partly Sunny on Friday Friday... Partly sunny, with a high near 37.
20% chance of snow Friday Night Friday Night... A 20 percent chance of snow. Mostly cloudy, with a low around 14.
30% chance of snow Saturday Saturday... A 30 percent chance of snow. Mostly cloudy, with a high near 22.
Current Radar Image


Sun Almanac for Northbrook, Illinois
Sunrise: 07:24 AM
Sunset: 5:08 PM
Civil Sunrise:06:54 AM
Civil Sunset: 5:38 PM
Nautical Sunrise: 06:21 AM
Nautical Sunset: 6:11 PM
Astro Sunrise: 05:49 AM
Astro Sunset: 6:43 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.