July weather forecast
Rosemont, IL

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Weather in July

July, the same as June, is another warm summer month in Rosemont, Illinois, with an average temperature fluctuating between 81°F (27.2°C) and 66.7°F (19.3°C).

Temperature

The warmest period tends to be July, when average temperatures fluctuate between a high of 81°F (27.2°C) and a low of 66.7°F (19.3°C).

Heat index

In July, the average heat index is evaluated at a tropical 86°F (30°C). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.
In reference to the heat index, it's for places in shade and with a slight wind. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.

Humidity

In July, the average relative humidity is 75%.

Rainfall

In Rosemont, Illinois, during July, the rain falls for 17.5 days and regularly aggregates up to 2.68" (68mm) of precipitation. In Rosemont, Illinois, during the entire year, the rain falls for 146.5 days and collects up to 24.13" (613mm) of precipitation.

Snowfall

June through September are months without snowfall in Rosemont.

Daylight

In Rosemont, the average length of the day in July is 14h and 53min.
On the first day of July in Rosemont, sunrise is at 5:20 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 8:10 pm CDT.

Sunshine

With an average of 10.2h of sunshine, July has the most sunshine of the year.

UV index

The months with the highest UV index in Rosemont, Illinois, are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: An average UV index of 6 in July transforms into this advice:
Dodge overexposure. Fair-skinned people can get singed 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. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the warmest months in Rosemont?

July proves to be the warmest month in Rosemont, Illinois, recording an average peak temperature of 81°F (27.2°C) and a minimum temperature of 66.7°F (19.3°C).

What is the temperature in July in Rosemont?

During July, Rosemont experiences an average high-temperature of 81°F (27.2°C) and a low-temperature of 66.7°F (19.3°C). In July, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 86°F (30°C).

What is the average humidity in July in Rosemont?

In July, the average relative humidity in Rosemont, Illinois, is 75%.

How many days does it rain in July in Rosemont?

In Rosemont, in July, it is raining for 17.5 days, with typically 2.68" (68mm) of accumulated precipitation.

When it does not snow in Rosemont?

June through September are months without snowfall in Rosemont.

How many hours of daylight does Rosemont have in July?

The average day length in July in Rosemont is 14h and 53min.

When is the sunrise / sunset in July in Rosemont?

On the first day of July in Rosemont, Illinois, sunrise is at 5:20 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 8:10 pm CDT.

What month has the most sunshine in Rosemont?

With an average of 10.2h of sunshine, July has the most sunshine of the year in Rosemont.

How long on average sun shines in July in Rosemont?

In Rosemont, the average sunshine duration in July is 10.2h.

What is the month with the highest UV index in Rosemont?

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

What is the UV index reading in July in Rosemont?

In July, the average daily maximum UV index in Rosemont, Illinois, is 6. A UV Index reading of 6 to 7 represents a high health risk 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
Rosemont, IL

Average temperature in July - Rosemont, IL
  • Average high temperature in July: 81°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in July: 66.7°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).

Average pressure in July
Rosemont, IL

Average pressure in July - Rosemont, 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
Rosemont, IL

Average wind speed in July - Rosemont, IL
  • Average wind speed in July: 6.8mph

The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

Average humidity in July
Rosemont, IL

Average humidity in July - Rosemont, IL
  • Average humidity in July: 75%

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
Rosemont, IL

Average rainfall in July - Rosemont, IL
  • Average rainfall in July: 2.68"

The wettest month (with the highest rainfall) is May (3.15").
The driest month (with the least rainfall) is December (0.91").

Average rainfall days in July
Rosemont, IL

Average rainfall days in July - Rosemont, IL
  • Average rainfall days in July: 17.5 days

The month with the highest number of rainy days is July (17.5 days).
The month with the least rainy days is February (5.3 days).

Average snowfall in July
Rosemont, IL

Average snowfall in July - Rosemont, IL
  • Average snowfall in July: 0"

The month with the highest snowfall is February (3.39").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in July
Rosemont, IL

Average snowfall days in July - Rosemont, IL
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in July /
Average sunshine in July
Rosemont, IL

Average daylight in July / Average sunshine in July - Rosemont, 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 month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in July
Rosemont, IL

Average sunshine days in July - Rosemont, IL
  • Average sunshine days in July: 10.3 days

The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is July (10.3 days).

Average UV index in July
Rosemont, IL

Average UV index in July - Rosemont, 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
Rosemont, IL

Average cloud cover in July - Rosemont, IL
  • Average cloud cover in July: 30

The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 30).

Average visibility in July
Rosemont, IL

Average visibility in July - Rosemont, 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).

Rosemont, Illinois, USA

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