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20°
Clear
Feels Like: 13°
Min: 15°
Max: 34°
The next few hours will be clear, with today reaching 34°C and dropping to 14°C. The coming days will be mostly clear starting in the afternoon.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
07:25
Sunrise
19:40
Sunset
Moon
Waxing Crescent
12:11
Moonrise
21:17
Moonset
Daily Forecast
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Wednesday
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Thursday
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Weather in Northbrook today, September 15, 2026
Northbrook starts September 15, 2026 under largely sunny skies, with bright spells setting the tone from the outset. Outdoor plans should enjoy long stretches of open sky as the day unfolds. The morning looks comparatively open, with cloud near 3% around 09:00. Early outdoor plans have a better chance of staying dry and bright.
The day peaks near 34°C and cools toward 15°C. Relative humidity sits between 36% and 75%, reaching its peak around 09:00. Winds stay light, near 4.5 km/h by 09:00, so the day feels still more than breezy.
Afternoon conditions open up, holding cloud close to 7% near 18:00. The day finishes on a milder, brighter note. Horizontal visibility holds close to 16.1 km. Sunrise is at 07:25 and sunset at 19:40, giving 12 hours 14 minutes of sunlight today.
In short, September 15, 2026 looks like a fine day in Northbrook for being outside, peaking around 34°C.
Frequently asked questions about weather in Northbrook
How warm does it get in Northbrook?
The warmest month in Northbrook is July, with average high temperatures of 30°C. The average temperature during this period is around 25°C.
How cold does it get in Northbrook?
The coldest month in Northbrook is January, with average low temperatures of -3°C. The average temperature during this period is around 0°C.
What is the wettest time of year in Northbrook?
The wettest month in Northbrook is March, with an average of 121mm of precipitation.
What is the driest time of year in Northbrook?
The driest month in Northbrook is September, with an average of 70mm of precipitation.
