July weather forecast
Westmont, IL

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Weather in July

July, like June, in Westmont, Illinois, is another warm summer month, with an average temperature fluctuating between 82.4°F (28°C) and 66.4°F (19.1°C).

Temperature

The warmest period tends to be July, when average temperatures fluctuate between a high of 82.4°F (28°C) and a low of 66.4°F (19.1°C).

Heat index

During July, the heat index is appraised at a hot 89.6°F (32°C). If one remains active during constant exposure, it might cause exhaustion and heat cramps.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.

Humidity

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

Rainfall

In Westmont, during July, the rain falls for 14.6 days and regularly aggregates up to 1.61" (41mm) of precipitation. In Westmont, during the entire year, the rain falls for 118.5 days and collects up to 13.74" (349mm) of precipitation.

Snowfall

May through September are months without snowfall in Westmont, Illinois.

Daylight

The average length of the day in July is 14h and 52min.
On the first day of the month, sunrise is at 5:21 am and sunset at 8:30 pm. On the last day of July, sunrise is at 5:45 am and sunset at 8:10 pm CDT.

Sunshine

The average sunshine in July in Westmont is 9.9h.

UV index

The months with the highest UV index in Westmont are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: An average maximum UV index of 6 in July leads to these recommendations:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
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Frequently asked questions

What are the warmest months in Westmont?

In Westmont, July is identified by the average highest temperatures, reaching a peak of 82.4°F (28°C) and a low of 66.4°F (19.1°C).

How hot does it get in Westmont in July?

The average high-temperature, in July, in Westmont, is 82.4°F (28°C), while the average low-temperature is 66.4°F (19.1°C). In July, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which represents the influence of relative humidity on air temperature, is appraised at 89.6°F (32°C).

What is the average humidity in July in Westmont?

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

How many days does it rain in July in Westmont?

In Westmont, in July, it is raining for 14.6 days, with typically 1.61" (41mm) of accumulated precipitation.

When it does not snow in Westmont?

In Westmont, snow does not fall in May through September.

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

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

When are sunrise and sunset in July in Westmont?

In July, on the first day of the month, sunrise is at 5:21 am and sunset at 8:30 pm. On the last day of the month, in Westmont, Illinois, sunrise is at 5:45 am and sunset at 8:10 pm CDT.

How many hours of sunshine does Westmont have in July?

In Westmont, the average sunshine duration in July is 9.9h.

When is the highest UV index in Westmont?

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

What is the UV index intensity in July in Westmont?

In July, the average daily maximum UV index in Westmont, Illinois, is 6. A UV Index of 6 to 7 symbolizes a high health threat from 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
Westmont, IL

Average temperature in July - Westmont, IL
  • Average high temperature in July: 82.4°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in July: 66.4°F

The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).

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Average pressure in July
Westmont, IL

Average pressure in July - Westmont, 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).

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Average wind speed in July
Westmont, IL

Average wind speed in July - Westmont, IL
  • Average wind speed in July: 6.3mph

The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).

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Average humidity in July
Westmont, IL

Average humidity in July - Westmont, 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%).

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Average rainfall in July
Westmont, IL

Average rainfall in July - Westmont, IL
  • Average rainfall in July: 1.61"

The wettest month (with the highest rainfall) is May (1.97").
The driest month (with the least rainfall) is December (0.63").

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Average rainfall days in July
Westmont, IL

Average rainfall days in July - Westmont, IL
  • Average rainfall days in July: 14.6 days

The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is February (4.2 days).

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Average snowfall in July
Westmont, IL

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

The month with the highest snowfall is February (2.28").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in July
Westmont, IL

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

The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in July / Average sunshine in July - Westmont, 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: 9h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days in July
Westmont, IL

Average sunshine days in July - Westmont, IL
  • Average sunshine days in July: 11.8 days

The month with the most sunshine days is December (20.7 days).
The month with the least sunshine days is July (11.8 days).

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Average UV index in July
Westmont, IL

Average UV index in July - Westmont, IL
  • Average UV index in July: 6

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

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Average cloud cover in July
Westmont, IL

Average cloud cover in July - Westmont, IL
  • Average cloud cover in July: 32

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 31).

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Average visibility in July
Westmont, IL

Average visibility in July - Westmont, 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).

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Westmont, Illinois, USA

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