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Northbrook, Illinois Weather Forecast
Northbrook, Illinois Weather
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Weather Forecast for Northbrook, Illinois : Adams County
Issued: 4:51 pm CST Jan 9, 2026 Latitude: 39.9586572 Longitude: -91.3757047 View on Google Maps

MouseOver for Detail Forecast
Tonight Saturday Sunday Monday Tuesday Wednesday Thursday Friday
80% chance of rain & snow on Tonight 30% chance of rain & snow on Saturday Sunny on Sunday Sunny on Monday Partly Sunny on Tuesday Mostly Cloudy on Wednesday Mostly Sunny on Thursday Mostly Cloudy on Friday
Low: 34°F High: 43°F High: 36°F High: 48°F High: 52°F High: 39°F High: 34°F High: 40°F
Low: 22°F Low: 27°F Low: 37°F Low: 35°F Low: 21°F Low: 26°F  
Rain & Snow Rain & Snow Sunny Sunny Partly Sunny Mostly Cloudy Mostly Sunny Mostly Cloudy
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Current Conditions at
QUINCY - (KUIN)
43°
Clear
as of 5:54 PM CST
Rel. Humidity: 75%
Dew Point: 36°F
Visibility: 10 Miles
Pressure: 30.14 in.
Flight Rule: VFR
Wind Data
3 MPH
020° North
Cloud Level(s): Clear
Current Conditions at
KEOKUK MUNICIPAL - (KEOK)
41°
Partly Cloudy
as of 5:55 PM CST
Rel. Humidity: 75%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 30.14 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Few at 3000ft, Scattered at 3500ft, Scattered at 4100ft
Current Conditions at
FORT MADISON - (KFSW)
39°
Clear
as of 5:55 PM CST
Rel. Humidity: 80%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 30.14 in.
Flight Rule: VFR
Wind Data
3 MPH
300° Northwest
Cloud Level(s): Clear
80% chance of rain & snow Tonight Tonight... Rain likely before 3am, then rain, possibly mixed with snow. Patchy fog between 3am and 5am. Low around 34. Light northeast wind becoming northwest 5 to 10 mph after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

30% chance of rain & snow Saturday Saturday... A chance of rain and snow showers before 7am, then a chance of sprinkles after 3pm. Cloudy, then gradually becoming mostly sunny, with a high near 43. Northwest wind 10 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.

20% chance of snow Saturday Night Saturday Night... A chance of sprinkles and flurries before 7pm, then a chance of flurries between 7pm and 9pm. Mostly clear, with a low around 22. Northwest wind 13 to 16 mph, with gusts as high as 28 mph.

Sunny on Sunday Sunday... Sunny, with a high near 36. Northwest wind 5 to 11 mph, with gusts as high as 23 mph.

Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 27. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

Sunny on Monday Monday... Sunny, with a high near 48.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 37.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 52.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 35.

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 21.

Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 34.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 26.

Mostly Cloudy on Friday Friday... Mostly cloudy, with a high near 40.

Current Radar Image


Sun Almanac for Northbrook, Illinois
Sunrise: 07:27 AM
Sunset: 4:58 PM
Civil Sunrise:06:57 AM
Civil Sunset: 5:29 PM
Nautical Sunrise: 06:23 AM
Nautical Sunset: 6:02 PM
Astro Sunrise: 05:51 AM
Astro Sunset: 6:35 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.