Vernon Hills

Sweet Grass County, Illinois, United States

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Current Weather

19°

Mostly Cloudy

Feels Like:

Min: 15°

Max: 25°

The next few hours will be overcast, with today reaching 25°C and dropping to 8°C. The coming days will be mostly clear throughout the day.

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Hourly Forecast

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Today
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Daylight Hours

06:38

Sunrise

18:54

Sunset

12 hours 16 minutes of sunlight today

Moon

Waxing Crescent

11:35

Moonrise

20:23

Moonset

Daily Forecast

Today

15°
25°

Wednesday

23°

Thursday

23°

Friday

21°

Saturday

20°

Sunday

21°

Monday

22°

Tuesday

21°

Wednesday

14°
18°

Thursday

13°
18°

Air Quality Data Available

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UV Index

No protection needed
0 Low
Low Extreme

Humidity

61% Comfortable
Low High

Weather in Vernon Hills today, September 15, 2026

Vernon Hills looks cloudy on September 15, 2026, with grey skies for much of the day. Sunshine stays limited, so the overall tone is muted from the morning onward. Cloud leads the morning, peaking close to 100% near 01:00. Sunshine has little room until later in the day.

Temperatures climb from an overnight low near 15°C toward a daytime high of about 25°C. Moisture in the air spans 22%-95%, with the highest values around 07:00. Airflow remains manageable, reaching about 6.9 km/h around 04:00.

Through the afternoon cloud remains the main feature, with cover near 100% around 12:00. Bright spells should stay limited even as the day wears on. Horizontal visibility sits around 14.9 km, briefly nearer 8.4 km. Sunrise is at 06:38 and sunset at 18:54, giving 12 hours 16 minutes of sunlight today.

The practical takeaway for Vernon Hills on September 15, 2026 is a cloudy day that stays usable, just not particularly bright, around 25°C.

Frequently asked questions about weather in Vernon Hills

How warm does it get in Vernon Hills?

The warmest month in Vernon Hills is July, with average high temperatures of 27°C. The average temperature during this period is around 23°C.

How cold does it get in Vernon Hills?

The coldest month in Vernon Hills is January, with average low temperatures of -6°C. The average temperature during this period is around -3°C.

What is the wettest time of year in Vernon Hills?

The wettest month in Vernon Hills is May, with an average of 122mm of precipitation.

What is the driest time of year in Vernon Hills?

The driest month in Vernon Hills is February, with an average of 55mm of precipitation.

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