Northbrook

Platte County, Illinois, United States

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Current Weather

17°

Overcast

Feels Like: 10°

Min: 17°

Max: 23°

The next few hours will be overcast, with today reaching 23°C and dropping to 12°C. The coming days will be mostly clear until afternoon, returning in the evening.

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Hourly Forecast

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Today
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Daylight Hours

06:38

Sunrise

18:52

Sunset

12 hours 13 minutes of sunlight today

Moon

Waxing Crescent

12:39

Moonrise

20:52

Moonset

Daily Forecast

Today

17°
23°

Thursday

10°
20°

Friday

21°

Saturday

17°

Sunday

19°

Monday

21°

Tuesday

22°

Wednesday

21°

Thursday

11°
19°

Friday

17°
19°

Air Quality Data Available

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UV Index

No protection needed
0 Low
Low Extreme

Humidity

87% Humid
Low High

Weather in Northbrook today, September 16, 2026

Cloud cover dominates in Northbrook on September 16, 2026, keeping sunshine limited. Expect a grey, overcast feel rather than long bright spells. Cloud leads the morning, peaking close to 100% near 06:00. Sunshine has little room until later in the day.

The day peaks near 23°C and cools toward 17°C. The air stays humid, with relative humidity between 61% and 88% and the peak around 18:00. Airflow remains manageable, reaching about 4.4 km/h around 16:00.

Expect persistent cloud later on, with amounts around 100% by 12:00. Sunshine remains the exception, not the rule. Visibility stays generally good near 15.6 km on average, though it can drop toward 13.9 km in thicker cloud or showers. Expect sunrise at 06:38, sunset at 18:52, and 12 hours 13 minutes of sunlight today overall.

The practical takeaway for Northbrook on September 16, 2026 is a cloudy day that stays usable, just not particularly bright, around 23°C.

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Metric (°C, km/h)