July weather forecast
West Chicago, IL

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Weather in July

July, the same as June, is another warm summer month in West Chicago, Illinois, with an average temperature varying between 64.2°F (17.9°C) and 81°F (27.2°C).

Temperature

In West Chicago, July is the warmest month, with temperatures averaging a high of 81°F (27.2°C) and a low of 64.2°F (17.9°C).

Heat index

In July, the heat index is evaluated at a tropical 86°F (30°C). Enduring exposure and continuous activity might cause a feeling of tiredness and induce heat cramps.
The standards for the heat index are set for locations in shade and under light breezes. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.

Humidity

In West Chicago, Illinois, the average relative humidity in July is 81%.

Rainfall

In West Chicago, in July, it is raining for 12.3 days, with typically 0.98" (25mm) of accumulated precipitation. In West Chicago, during the entire year, the rain falls for 101.9 days and collects up to 8.58" (218mm) of precipitation.

Snowfall

May through September are months without snowfall in West Chicago.

Daylight

In West Chicago, Illinois, 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 8:31 pm. On the last day of July, sunrise is at 5:46 am and sunset at 8:11 pm CDT.

Sunshine

July has the most sunshine of the year, with an average of 9.9h of sunshine.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in West Chicago. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.
Note: A maximum high UV index of 6 in July translates into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
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Frequently asked questions

What is the warmest month in West Chicago?

July, with average temperatures reaching a high of 81°F (27.2°C) and a low of 64.2°F (17.9°C), is the warmest month in West Chicago, Illinois.

What is the usual temperature for West Chicago in July?

In West Chicago, in July, the average high-temperature is 81°F (27.2°C), and the average low-temperature is 64.2°F (17.9°C). The average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, in July is evaluated at 86°F (30°C).

What is the average humidity in July in West Chicago?

In West Chicago, the average relative humidity in July is 81%.

How much does it rain in West Chicago in July?

In West Chicago, Illinois, in July, during 12.3 rainfall days, 0.98" (25mm) of precipitation is typically accumulated.

When it does not snow in West Chicago?

May through September are months without snowfall in West Chicago, Illinois.

What is the average length of the day in July in West Chicago?

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

When is the sunrise / sunset in July in West Chicago?

On the first day of July in West Chicago, Illinois, sunrise is at 5:21 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 8:11 pm CDT.

What month has the most sunshine in West Chicago?

The month with the most sunshine in West Chicago is July, with an average of 9.9h of sunshine.

How long on average sun shines in July in West Chicago?

The average sunshine duration in July in West Chicago, Illinois, is 9.9h.

What is the month with the highest UV index in West Chicago?

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

How high is the UV index in July in West Chicago?

The average daily maximum UV index in July is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability 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
West Chicago, IL

Average temperature in July - West Chicago, 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 (27.9°F).

  • Average low temperature in July: 64.2°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).

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Average pressure in July
West Chicago, IL

Average pressure in July - West Chicago, 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
West Chicago, IL

Average wind speed in July - West Chicago, IL
  • Average wind speed in July: 6.4mph

The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).

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Average humidity in July
West Chicago, IL

Average humidity in July - West Chicago, IL
  • Average humidity in July: 81%

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

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Average rainfall in July
West Chicago, IL

Average rainfall in July - West Chicago, IL
  • Average rainfall in July: 0.98"

The wettest month (with the highest rainfall) is May (1.26").
The driest months (with the least rainfall) are November and December (0.39").

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Average rainfall days in July
West Chicago, IL

Average rainfall days in July - West Chicago, IL
  • Average rainfall days in July: 12.3 days

The month with the highest number of rainy days is May (12.4 days).
The month with the least rainy days is January (3.4 days).

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Average snowfall in July
West Chicago, IL

Average snowfall in July - West Chicago, IL
  • Average snowfall in July: 0"

The month with the highest snowfall is January (1.14").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in July
West Chicago, IL

Average snowfall days in July - West Chicago, IL
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (7.6 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
West Chicago, IL

Average daylight in July / Average sunshine in July - West Chicago, 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 July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days in July
West Chicago, IL

Average sunshine days in July - West Chicago, IL
  • Average sunshine days in July: 14.3 days

The month with the most sunshine days is December (22.4 days).
The month with the least sunshine days is June (13.3 days).

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Average UV index in July
West Chicago, IL

Average UV index in July - West Chicago, 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).

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Average cloud cover in July
West Chicago, IL

Average cloud cover in July - West Chicago, IL
  • Average cloud cover in July: 33

The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is September (Cloud cover 32).

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Average visibility in July
West Chicago, IL

Average visibility in July - West Chicago, IL
  • Average visibility in July: 5mi

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

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West Chicago, Illinois, USA

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