July weather forecast
Mount Prospect, IL

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Weather in July

July is the peak of summer in Mount Prospect with temperature reaching a high of 81.1°F (27.3°C). The city also experiences the longest sunshine duration of 10.2 hours. The hot weather makes it a perfect time for swimming or water activities, promising a refreshing respite from the heat. Despite the high temperature, July weather can be quite comfortable thanks to prevalent wind speeds of 6.7mph (10.8km/h), offering relief on sweltering days. Overall, July in Mount Prospect is a time of hot weather, outdoor activities, and fun in the sun.

Temperature

July temperatures tend to peak at an average high of 81.1°F (27.3°C) and dip to a low of 66.4°F (19.1°C).

Heat index

For July, the heat index is computed to be a hot 86°F (30°C). Unrelenting activity during exposure could cause fatigue and potentially lead to heat cramps.
For clarity, heat index numbers account for light winds and areas under shade. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

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

Rainfall

In July, the rain falls for 17.7 days. Throughout July, 3.15" (80mm) of precipitation is accumulated. In Mount Prospect, during the entire year, the rain falls for 153.3 days and collects up to 30.12" (765mm) of precipitation.

Snowfall

June through September are months without snowfall in Mount Prospect.

Daylight

In Mount Prospect, the average length of the day in July is 14h and 53min.
On the first day of July in Mount Prospect, sunrise is at 5:20 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 8:11 pm CDT.

Sunshine

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

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index, 6 in July, converts into the following recommendations:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
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Frequently asked questions

What is the warmest month in Mount Prospect?

July is the month when Mount Prospect's temperatures reach their peak, with averages of 81.1°F (27.3°C) and lows of 66.4°F (19.1°C).

What is the usual temperature for Mount Prospect in July?

In Mount Prospect, in July, the average high-temperature is 81.1°F (27.3°C), and the average low-temperature is 66.4°F (19.1°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in July is computed to be 86°F (30°C).

What is the average humidity in July in Mount Prospect?

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

How much does it rain in Mount Prospect in July?

In Mount Prospect, in July, during 17.7 rainfall days, 3.15" (80mm) of precipitation is typically accumulated.

When it does not snow in Mount Prospect?

June through September are months without snowfall in Mount Prospect, Illinois.

What is the average length of the day in July in Mount Prospect?

In Mount Prospect, the average day length in July is 14h and 53min.

When are sunrise and sunset in July in Mount Prospect?

In July, on the first day of the month, sunrise is at 5:20 am and sunset at 8:31 pm. On the last day of the month, in Mount Prospect, sunrise is at 5:44 am and sunset at 8:11 pm CDT.

What month has the most sunshine in Mount Prospect?

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

How long on average sun shines in July in Mount Prospect?

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

What are the months with the highest UV index in Mount Prospect?

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

What is the UV index reading in July in Mount Prospect?

The average daily maximum UV index in July in Mount Prospect is 6. A UV Index estimate 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
Mount Prospect, IL

Average temperature in July - Mount Prospect, IL
  • Average high temperature in July: 81.1°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (28.2°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 (18°F).

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Average pressure in July
Mount Prospect, IL

Average pressure in July - Mount Prospect, 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
Mount Prospect, IL

Average wind speed in July - Mount Prospect, IL
  • Average wind speed in July: 6.7mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

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Average humidity in July
Mount Prospect, IL

Average humidity in July - Mount Prospect, 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
Mount Prospect, IL

Average rainfall in July - Mount Prospect, IL
  • Average rainfall in July: 3.15"

The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is December (1.46").

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Average rainfall days in July
Mount Prospect, IL

Average rainfall days in July - Mount Prospect, IL
  • Average rainfall days in July: 17.7 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (5.6 days).

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Average snowfall in July
Mount Prospect, IL

Average snowfall in July - Mount Prospect, IL
  • Average snowfall in July: 0"

The month with the highest snowfall is January (4.96").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in July
Mount Prospect, IL

Average snowfall days in July - Mount Prospect, IL
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (11.8 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
Mount Prospect, IL

Average daylight in July / Average sunshine in July - Mount Prospect, 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).

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Average sunshine days in July
Mount Prospect, IL

Average sunshine days in July - Mount Prospect, IL
  • Average sunshine days in July: 11.2 days

The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is June (10.7 days).

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Average UV index in July
Mount Prospect, IL

Average UV index in July - Mount Prospect, 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 December (UV index 1).

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Average cloud cover in July
Mount Prospect, IL

Average cloud cover in July - Mount Prospect, IL
  • Average cloud cover in July: 30

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 29).

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Average visibility in July
Mount Prospect, IL

Average visibility in July - Mount Prospect, 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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Mount Prospect, Illinois, USA

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