July weather forecast
Northlake, IL

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Weather in July

July, the same as June, is another warm summer month in Northlake, Illinois, with an average temperature varying between 81.9°F (27.7°C) and 66.6°F (19.2°C).

Temperature

July, characterized by an average high temperature of 81.9°F (27.7°C) and a low temperature of 66.6°F (19.2°C), is generally the warmest month.

Heat index

The average heat index in July is estimated at a tropical 87.8°F (31°C). Long-lasting exposure and activity potentially induce a sense of weariness, with the risk of heat cramps.
Note that heat index values are valued for light wind and location in the shade. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', reflects the feeling of heat when considering both air temperature and humidity. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.

Humidity

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

Rainfall

In Northlake, in July, during 17.3 rainfall days, 2.87" (73mm) of precipitation is typically accumulated. Throughout the year, there are 149.4 rainfall days, and 25.08" (637mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In Northlake, the average length of the day in July is 14h and 52min.
On the first day of the month, sunrise is at 5:20 am and sunset at 8:30 pm. On the last day of July, in Northlake, sunrise is at 5:45 am and sunset at 8:10 pm CDT.

Sunshine

July and August, with an average of 10.1h of sunshine, are months with the most sunshine.

UV index

The months with the highest UV index in Northlake 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 unsafe exposure to UV radiation for the ordinary person.
Note: An average UV index of 6 in July transforms into this advice:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
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Frequently asked questions

What are the warmest months in Northlake?

Northlake, Illinois, notes the warmest temperatures in July, with a average high of 81.9°F (27.7°C) and a low of 66.6°F (19.2°C).

What are July temperatures in Northlake?

In Northlake, in July, the average high-temperature is 81.9°F (27.7°C), and the average low-temperature is 66.6°F (19.2°C). In July, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is estimated at 87.8°F (31°C).

What is the average humidity in July in Northlake?

The average relative humidity in July in Northlake is 76%.

How much does it rain in Northlake in July?

In Northlake, in July, during 17.3 rainfall days, 2.87" (73mm) of precipitation is typically accumulated.

When it does not snow in Northlake?

June through September are months without snowfall in Northlake.

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

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

When is the sunrise / sunset in July in Northlake?

In July, on the first day of the month, sunrise is at 5:20 am and sunset at 8:30 pm. On the last day of the month, in Northlake, sunrise is at 5:45 am and sunset at 8:10 pm CDT.

What are the months with the most sunshine in Northlake?

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

How many hours of sunshine does Northlake have in July?

In Northlake, Illinois, the average sunshine duration in July is 10.1h.

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

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

How high is the UV index in July in Northlake?

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

Average temperature in July - Northlake, IL
  • Average high temperature in July: 81.9°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in July: 66.6°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (18°F).

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Average pressure in July
Northlake, IL

Average pressure in July - Northlake, 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
Northlake, IL

Average wind speed in July - Northlake, IL
  • Average wind speed in July: 6.5mph

The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

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Average humidity in July
Northlake, IL

Average humidity in July - Northlake, 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
Northlake, IL

Average rainfall in July - Northlake, IL
  • Average rainfall in July: 2.87"

The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is December (1.14").

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Average rainfall days in July
Northlake, IL

Average rainfall days in July - Northlake, IL
  • Average rainfall days in July: 17.3 days

The months with the highest number of rainy days are May and July (17.3 days).
The month with the least rainy days is February (5.1 days).

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Average snowfall in July
Northlake, IL

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

The month with the highest snowfall is February (3.86").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in July
Northlake, IL

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

The month with the highest number of snowfall days is January (12.4 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
Northlake, IL

Average daylight in July / Average sunshine in July - Northlake, 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
Northlake, IL

Average sunshine days in July - Northlake, IL
  • Average sunshine days in July: 9.5 days

The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is July (9.5 days).

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Average UV index in July
Northlake, IL

Average UV index in July - Northlake, 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
Northlake, IL

Average cloud cover in July - Northlake, IL
  • Average cloud cover in July: 31

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

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Average visibility in July
Northlake, IL

Average visibility in July - Northlake, 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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Northlake, Illinois, USA

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