August weather forecast
Deer Park, IL

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Weather in August

August, the last month of the summer in Deer Park, is also a moderately hot month, with an average temperature fluctuating between 63.5°F (17.5°C) and 79.3°F (26.3°C).

Temperature

August brings a marginal elevation to a still moderately hot 79.3°F (26.3°C) from July's 80.6°F (27°C) in Deer Park's average high-temperatures. An average low-temperature of 63.5°F (17.5°C) is recorded during the nights in August.

Humidity

In Deer Park, the average relative humidity in August is 78%.

Rainfall

In Deer Park, Illinois, in August, during 16.9 rainfall days, 3.11" (79mm) of precipitation is typically accumulated. Throughout the year, there are 163.1 rainfall days, and 32.24" (819mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Deer Park, the average length of the day in August is 13h and 50min.
On the first day of the month, sunrise is at 5:46 am and sunset at 8:11 pm. On the last day of August, in Deer Park, sunrise is at 6:17 am and sunset at 7:27 pm CDT.

Sunshine

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

UV index

The months with the highest UV index are July and August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 6 in August converts into the following recommendations:
Guard oneself from overexposure. Defence against sun injury is vital. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Updated: Jul 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average August temperature in Deer Park?

In Deer Park, 79.3°F (26.3°C) is the average high-temperature and 63.5°F (17.5°C) is the average low-temperature during August. In July, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is calculated to be 86°F (30°C).

What is the average humidity in August?

The average relative humidity in August is 78%.

How many days does it rain in August in Deer Park?

In Deer Park, in August, it is raining for 16.9 days, with typically 3.11" (79mm) of accumulated precipitation.

When it does not snow?

June through September are months without snowfall in Deer Park.

How many hours of daylight does Deer Park have in August?

In August, the average day length is 13h and 50min.

When are sunrise and sunset in August?

On the first day of August, sunrise is at 5:46 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 7:27 pm CDT.

What are the months with the most sunshine?

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

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

In August, the average sunshine duration is 10.1h.

What are the months with the highest UV index?

The months with the highest UV index in Deer Park are July and August, with an average maximum UV index of 6.

What is the UV index intensity in August in Deer Park?

In Deer Park, the average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from unprotected exposure to UV radiation.
Average humidity
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
Deer Park, IL

Average temperature in August - Deer Park, IL
  • Average high temperature in August: 79.3°F

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (27.7°F).

  • Average low temperature in August: 63.5°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.3°F).

Average pressure in August
Deer Park, IL

Average pressure in August - Deer 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
Deer Park, IL

Average wind speed in August - Deer Park, IL
  • Average wind speed in August: 6.2mph

The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

Average humidity in August
Deer Park, IL

Average humidity in August - Deer Park, IL
  • Average humidity in August: 78%

The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).

Average rainfall in August
Deer Park, IL

Average rainfall in August - Deer Park, IL
  • Average rainfall in August: 3.11"

The wettest month (with the highest rainfall) is June (4.13").
The driest month (with the least rainfall) is November (1.61").

Average rainfall days in August
Deer Park, IL

Average rainfall days in August - Deer Park, IL
  • Average rainfall days in August: 16.9 days

The month with the highest number of rainy days is May (20 days).
The month with the least rainy days is February (5.7 days).

Average snowfall in August
Deer Park, IL

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

The month with the highest snowfall is February (6.22").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Deer Park, IL

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

The month with the highest number of snowfall days is January (15.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Deer 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
Deer Park, IL

Average sunshine days in August - Deer Park, IL
  • Average sunshine days in August: 11.2 days

The month with the most sunshine days is November (15.5 days).
The month with the least sunshine days is June (8.4 days).

Average UV index in August
Deer Park, IL

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

The months with the highest UV index are 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
Deer Park, IL

Average cloud cover in August - Deer Park, IL
  • Average cloud cover in August: 31

The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July, August and September (Cloud cover 31).

Average visibility in August
Deer Park, IL

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

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).

Deer Park, Illinois, USA

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