July weather forecast
Vernon Hills, IL

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Weather in July

July, the same as June, is another warm summer month in Vernon Hills, Illinois, with an average temperature fluctuating between 80.4°F (26.9°C) and 64.9°F (18.3°C).

Temperature

Vernon Hills's July weather reaches an average high of 80.4°F (26.9°C) and an average low of 64.9°F (18.3°C), making it the warmest month.

Humidity

The average relative humidity in July is 78%.

Rainfall

In Vernon Hills, during July, the rain falls for 17.2 days and regularly aggregates up to 2.91" (74mm) of precipitation. Throughout the year, there are 147.3 rainfall days, and 27.44" (697mm) of precipitation is accumulated.

Snowfall

In Vernon Hills, snow does not fall in June through September.

Daylight

In July, the average length of the day in Vernon Hills is 14h and 54min.
On the first day of July, sunrise is at 5:19 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 8:11 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 Vernon Hills, Illinois, are July and August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A daily high UV index of 6 in July leads to these guidelines:
Prevent overexposure. Protection from the sun's harmful effects is needed. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Opt for tightly woven and loose clothing to enhance protection from the Sun.
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Frequently asked questions

What are the warmest months in Vernon Hills?

In Vernon Hills, July is the month with the highest recorded average temperatures, measuring a high of 80.4°F (26.9°C) and a low of 64.9°F (18.3°C).

What is the usual temperature for Vernon Hills in July?

In July, the average high-temperature and low-temperature in Vernon Hills, Illinois, are 80.4°F (26.9°C) and 64.9°F (18.3°C) respectively.

What is the average humidity in July in Vernon Hills?

In Vernon Hills, the average relative humidity in July is 78%.

How many days does it rain in July in Vernon Hills?

In Vernon Hills, in July, during 17.2 rainfall days, 2.91" (74mm) of precipitation is typically accumulated.

When it does not snow in Vernon Hills?

In Vernon Hills, snow does not fall in June through September.

How many hours of daylight does Vernon Hills have in July?

In Vernon Hills, the average day length in July is 14h and 54min.

What time are sunrise and sunset in July in Vernon Hills?

On the first day of July in Vernon Hills, Illinois, sunrise is at 5:19 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 8:11 pm CDT.

What is the month with the most sunshine in Vernon Hills?

The months with the most sunshine in Vernon Hills, Illinois, are July and August, with an average of 10.1h of sunshine.

How long on average sun shines in July in Vernon Hills?

In July, the average sunshine duration is 10.1h.

What are the months with the highest UV index in Vernon Hills?

The months with the highest UV index in Vernon Hills, Illinois, are July and August, with an average maximum UV index of 6.

How high is the UV index in July in Vernon Hills?

The average daily maximum UV index in July in Vernon Hills, Illinois, is 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to UV radiation.
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
Vernon Hills, IL

Average temperature in July - Vernon Hills, IL
  • Average high temperature in July: 80.4°F

The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (27.9°F).

  • Average low temperature in July: 64.9°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).

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Average pressure in July
Vernon Hills, IL

Average pressure in July - Vernon Hills, IL
  • Average pressure in July: 29.97"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in July
Vernon Hills, IL

Average wind speed in July - Vernon Hills, IL
  • Average wind speed in July: 6.6mph

The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).

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Average humidity in July
Vernon Hills, IL

Average humidity in July - Vernon Hills, IL
  • Average humidity in July: 78%

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
Vernon Hills, IL

Average rainfall in July - Vernon Hills, IL
  • Average rainfall in July: 2.91"

The wettest month (with the highest rainfall) is June (3.54").
The driest months (with the least rainfall) are November and December (1.3").

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Average rainfall days in July
Vernon Hills, IL

Average rainfall days in July - Vernon Hills, IL
  • Average rainfall days in July: 17.2 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (4.3 days).

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Average snowfall in July
Vernon Hills, IL

Average snowfall in July - Vernon Hills, IL
  • Average snowfall in July: 0"

The month with the highest snowfall is February (5.55").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in July
Vernon Hills, IL

Average snowfall days in July - Vernon Hills, IL
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (12.9 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
Vernon Hills, IL

Average daylight in July / Average sunshine in July - Vernon Hills, 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).

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Average sunshine days in July
Vernon Hills, IL

Average sunshine days in July - Vernon Hills, IL
  • Average sunshine days in July: 10.9 days

The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is June (10 days).

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Average UV index in July
Vernon Hills, IL

Average UV index in July - Vernon Hills, IL
  • Average UV index in July: 6

The months with the highest UV index are 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
Vernon Hills, IL

Average cloud cover in July - Vernon Hills, IL
  • Average cloud cover in July: 30

The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 30).

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Average visibility in July
Vernon Hills, IL

Average visibility in July - Vernon Hills, IL
  • Average visibility in July: 6mi

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

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Vernon Hills, Illinois, USA

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