July weather forecast
Hillside, IL

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Weather in July

July, like June, in Hillside, Illinois, is another warm summer month, with an average temperature ranging between min 66.6°F (19.2°C) and max 81.9°F (27.7°C).

Temperature

July is the month when Hillside experiences its warmest temperatures, averaging a high of 81.9°F (27.7°C) and a low of 66.6°F (19.2°C).

Heat index

In July, the average heat index is computed to be a tropical 87.8°F (31°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Be aware that heat index ratings are designed for shaded locations and minor breezes. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.

Humidity

In Hillside, the average relative humidity in July is 76%.

Rainfall

In Hillside, during July, the rain falls for 17.3 days and regularly aggregates up to 2.87" (73mm) of precipitation. Throughout the year, there are 149.4 rainfall days, and 25.08" (637mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall in Hillside, Illinois.

Daylight

In Hillside, the average length of the day in July is 14h and 52min.
On the first day of July, sunrise is at 5:20 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 8:10 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 Hillside are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.
Note: An average maximum UV index of 6 in July leads to these recommendations:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the hottest in Hillside?

During the warmest month in Hillside, July, temperatures average a high of 81.9°F (27.7°C) and a low of 66.6°F (19.2°C).

What is the usual temperature for Hillside in July?

In July, the average high-temperature and low-temperature in Hillside are 81.9°F (27.7°C) and 66.6°F (19.2°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in July is computed to be 87.8°F (31°C).

What is the average humidity in July in Hillside?

In July, the average relative humidity in Hillside, Illinois, is 76%.

How many days does it rain in July in Hillside?

In Hillside, Illinois, in July, it is raining for 17.3 days, with typically 2.87" (73mm) of accumulated precipitation.

When it does not snow in Hillside?

June through September are months without snowfall.

What is the average length of the day in July in Hillside?

In July, the average day length is 14h and 52min.

When is the sunrise / sunset in July in Hillside?

In July, on the first day of the month, sunrise is at 5:20 am and sunset at 8:30 pm. On the last day of the month, in Hillside, sunrise is at 5:45 am and sunset at 8:10 pm CDT.

What is the month with the most sunshine in Hillside?

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

How long on average sun shines in July in Hillside?

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

When is the highest UV index in Hillside?

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

How high is the UV index in July in Hillside?

In July, the average daily maximum UV index in Hillside, Illinois, is 6. A UV Index value of 6 to 7 symbolizes 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
Hillside, IL

Average temperature in July - Hillside, IL
  • Average high temperature in July: 81.9°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 July: 66.6°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 July
Hillside, IL

Average pressure in July - Hillside, 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
Hillside, IL

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

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 July
Hillside, IL

Average humidity in July - Hillside, IL
  • Average humidity in July: 76%

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 July
Hillside, IL

Average rainfall in July - Hillside, IL
  • Average rainfall in July: 2.87"

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 July
Hillside, IL

Average rainfall days in July - Hillside, IL
  • Average rainfall days in July: 17.3 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 July
Hillside, IL

Average snowfall in July - Hillside, IL
  • Average snowfall in July: 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 July
Hillside, IL

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

Average daylight in July / Average sunshine in July - Hillside, 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
Hillside, IL

Average sunshine days in July - Hillside, IL
  • Average sunshine days in July: 9.5 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 July
Hillside, IL

Average UV index in July - Hillside, IL
  • Average UV index in July: 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 July
Hillside, IL

Average cloud cover in July - Hillside, IL
  • Average cloud cover in July: 31

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 July
Hillside, IL

Average visibility in July - Hillside, IL
  • Average visibility in July: 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).

Hillside, Illinois, USA

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