August weather forecast
Stone Park, IL

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Weather in August

The last month of the summer, August, is also a moderately hot month in Stone Park, Illinois, with an average temperature fluctuating between 80.2°F (26.8°C) and 65.7°F (18.7°C).

Temperature

Stone Park registers an average high-temperature of a still moderately hot 80.2°F (26.8°C) with the arrival of August, showing minor deviation from the preceding month. In Stone Park, the average temperature during the nights of August drops to a refreshing 65.7°F (18.7°C).

Humidity

In Stone Park, the average relative humidity in August is 74%.

Rainfall

In August, the rain falls for 16.6 days. Throughout August, 2.83" (72mm) of precipitation is accumulated. In Stone Park, Illinois, during the entire year, the rain falls for 149.4 days and collects up to 25.08" (637mm) of precipitation.

Snowfall

In Stone Park, snow does not fall in June through September.

Daylight

In August, the average length of the day is 13h and 49min.
On the first day of August, sunrise is at 5:46 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 7:26 pm CDT.

Sunshine

July and August, with an average of 10.1h of sunshine, are months with the most sunshine.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average maximum UV index of 6 in August leads to these recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Updated: Jun 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in August?

In Stone Park, in August, the average high-temperature is 80.2°F (26.8°C), and the average low-temperature is 65.7°F (18.7°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in July is evaluated at 87.8°F (31°C).

What is the average humidity in August?

In August, the average relative humidity is 74%.

How many days does it rain in August?

In Stone Park, in August, during 16.6 rainfall days, 2.83" (72mm) of precipitation is typically accumulated.

When it does not snow?

In Stone Park, snow does not fall in June through September.

What is the average length of the day in August?

The average day length in August is 13h and 49min.

When is the sunrise / sunset in August?

In August, on the first day of the month, sunrise is at 5:46 am and sunset at 8:09 pm. On the last day of the month, in Stone Park, sunrise is at 6:17 am and sunset at 7:26 pm CDT.

What are the months with the most sunshine?

July and August, with an average of 10.1h of sunshine, are months with the most sunshine.

How many hours of sunshine does Stone Park have in August?

In August, the average sunshine duration is 10.1h.

What is the month with the highest UV index?

June through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index intensity in August?

In August, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Stone Park, IL

Average temperature in August - Stone Park, IL
  • Average high temperature in August: 80.2°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in August: 65.7°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (18°F).

Average pressure in August
Stone Park, IL

Average pressure in August - Stone Park, IL
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in August
Stone Park, IL

Average wind speed in August - Stone Park, IL
  • Average wind speed in August: 6.3mph

The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

Average humidity in August
Stone Park, IL

Average humidity in August - Stone Park, IL
  • Average humidity in August: 74%

The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (72%).

Average rainfall in August
Stone Park, IL

Average rainfall in August - Stone Park, IL
  • Average rainfall in August: 2.83"

The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is December (1.14").

Average rainfall days in August
Stone Park, IL

Average rainfall days in August - Stone Park, IL
  • Average rainfall days in August: 16.6 days

The months with the highest number of rainy days are May and July (17.3 days).
The month with the least rainy days is February (5.1 days).

Average snowfall in August
Stone Park, IL

Average snowfall in August - Stone Park, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is February (3.86").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Stone Park, IL

Average snowfall days in August - Stone Park, IL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Stone Park, IL

Average daylight in August / Average sunshine in August - Stone Park, IL
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in August: 10h and 1min

The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in August
Stone Park, IL

Average sunshine days in August - Stone Park, IL
  • Average sunshine days in August: 11.3 days

The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is July (9.5 days).

Average UV index in August
Stone Park, IL

Average UV index in August - Stone Park, IL
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in August
Stone Park, IL

Average cloud cover in August - Stone Park, IL
  • Average cloud cover in August: 30

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in August
Stone Park, IL

Average visibility in August - Stone Park, IL
  • Average visibility in August: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Stone Park, Illinois, USA

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