July weather forecast
Deer Park, IL

Share

Weather in July

July, the same as June, is a moderately hot summer month in Deer Park, Illinois, with temperature in the range of an average low of 64.9°F (18.3°C) and an average high of 80.6°F (27°C).

Temperature

In Deer Park, the peak average temperatures are observed in July, with a high of 80.6°F (27°C) and a low of 64.9°F (18.3°C).

Heat index

The heat index value for July is calculated to be a tropical 86°F (30°C). Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.
For clarity, heat index numbers account for light winds and areas under shade. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is achieved by amalgamating air temperature with the relative humidity readings. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.

Humidity

In Deer Park, the average relative humidity in July is 79%.

Rainfall

In Deer Park, in July, it is raining for 18.6 days, with typically 3.27" (83mm) of accumulated precipitation. In Deer Park, during the entire year, the rain falls for 163.1 days and collects up to 32.24" (819mm) of precipitation.

Snowfall

June through September are months without snowfall in Deer Park.

Daylight

In July, the average length of the day is 14h and 54min.
On the first day of July, sunrise is at 5:20 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 8:12 pm CDT.

Sunshine

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

UV index

The months with the highest UV index in Deer Park are July and August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: In July, an average UV index of 6 transforms into the following instructions:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Updated: Jul 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the hottest?

July brings the highest temperatures, with an average high of 80.6°F (27°C) and an average low of 64.9°F (18.3°C).

What is the usual temperature for Deer Park in July?

In Deer Park, in July, the average high-temperature is 80.6°F (27°C), and the average low-temperature is 64.9°F (18.3°C). 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 July?

In Deer Park, the average relative humidity in July is 79%.

How many days does it rain in July?

In Deer Park, in July, during 18.6 rainfall days, 3.27" (83mm) of precipitation is typically accumulated.

When it does not snow?

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

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

In Deer Park, the average day length in July is 14h and 54min.

When is the sunrise / sunset in July?

On the first day of July, sunrise is at 5:20 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 8:12 pm CDT.

What are the months with the most sunshine in Deer Park?

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 July?

In Deer Park, the average sunshine duration in July is 10.1h.

What is the month with the highest UV index?

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

What is the UV index reading in July?

The average daily maximum UV index in July is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to Sun's UV rays.
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 July
Deer Park, IL

Average temperature in July - Deer Park, IL
  • Average high temperature in July: 80.6°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 July: 64.9°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 July
Deer Park, IL

Average pressure in July - Deer Park, IL
  • Average pressure in July: 29.97"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 July
Deer Park, IL

Average wind speed in July - Deer Park, IL
  • Average wind speed in July: 6.5mph

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 July
Deer Park, IL

Average humidity in July - Deer Park, IL
  • Average humidity in July: 79%

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 July
Deer Park, IL

Average rainfall in July - Deer Park, IL
  • Average rainfall in July: 3.27"

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 July
Deer Park, IL

Average rainfall days in July - Deer Park, IL
  • Average rainfall days in July: 18.6 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 July
Deer Park, IL

Average snowfall in July - Deer Park, IL
  • Average snowfall in July: 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 July
Deer Park, IL

Average snowfall days in July - Deer Park, IL
  • Average snowfall days in July: 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 July /
Average sunshine in July
Deer Park, IL

Average daylight in July / Average sunshine in July - Deer Park, IL
  • Average daylight in July: 14h 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 July: 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 July
Deer Park, IL

Average sunshine days in July - Deer Park, IL
  • Average sunshine days in July: 9.3 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 July
Deer Park, IL

Average UV index in July - Deer Park, IL
  • Average UV index in July: 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 July
Deer Park, IL

Average cloud cover in July - Deer Park, IL
  • Average cloud cover in July: 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 July
Deer Park, IL

Average visibility in July - Deer Park, IL
  • Average visibility in July: 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

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location