Oak Forest

Platte County, Illinois, United States

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Current Weather

31°

Clear

Feels Like: 21°

Min: 19°

Max: 31°

The next few hours will be overcast, with today reaching 31°C and dropping to 18°C. The coming days will be mostly cloudy

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Compare today's weather with yesterday's data and track temperature trends over time.

Hourly Forecast

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Today
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Daylight Hours

06:37

Sunrise

18:53

Sunset

12 hours 15 minutes of sunlight today

Moon

Waxing Crescent

11:31

Moonrise

20:24

Moonset

Daily Forecast

Today

19°
31°

Wednesday

10°
23°

Thursday

12°
19°

Friday

11°
19°

Saturday

17°

Sunday

19°

Monday

19°

Tuesday

19°

Wednesday

21°

Thursday

14°
20°

Air Quality Data Available

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UV Index

Wear sunscreen
4 Moderate
Low Extreme

Humidity

47% Dry
Low High

Weather in Oak Forest today, September 15, 2026

Oak Forest 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.

Temperatures climb from an overnight low near 19°C toward a daytime high of about 31°C. Relative humidity sits between 47% and 89%, reaching its peak around 23:00. Expect gentle winds, highest near 15:00 at 5.2 km/h.

Afternoon skies stay clogged, peaking close to 100% near 18:00. The grey theme continues rather than clearing out. Visibility holds near 16.0 km, though it can fall to 15.6 km. The sun rises at 06:37 and sets at 18:53, for a total of 12 hours 15 minutes of sunlight today.

In short, cloud leads the story in Oak Forest on September 15, 2026; expect limited sun and a peak around 31°C.

Frequently asked questions about weather in Oak Forest

How warm does it get in Oak Forest?

The warmest month in Oak Forest is July, with average high temperatures of 29°C. The average temperature during this period is around 24°C.

How cold does it get in Oak Forest?

The coldest month in Oak Forest 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 Oak Forest?

The wettest month in Oak Forest is May, with an average of 129mm of precipitation.

What is the driest time of year in Oak Forest?

The driest month in Oak Forest is December, with an average of 60mm of precipitation.

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Metric (°C, km/h)