July weather forecast
Addison, IL

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Weather in July

July, the same as June, is a moderately hot summer month in Addison, Illinois, with an average temperature ranging between max 81.9°F (27.7°C) and min 66.6°F (19.2°C).

Temperature

July is the month when Addison sees the highest average temperatures, with a high of 81.9°F (27.7°C) and a low of 66.6°F (19.2°C).

Heat index

Throughout July, the heat index is evaluated at a tropical 87.8°F (31°C). Enduring exposure and unrelenting activity might cause a state of weariness, potentially leading to heat cramps.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly important for children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.

Humidity

The average relative humidity in July is 76%.

Rainfall

In Addison, in July, during 17.3 rainfall days, 2.87" (73mm) of precipitation is typically accumulated. In Addison, during the entire year, the rain falls for 149.4 days and collects up to 25.08" (637mm) of precipitation.

Snowfall

In Addison, snow does not fall in June through September.

Daylight

In Addison, 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 8:31 pm. On the last day of July, sunrise is at 5:45 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 are June through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index of 6 in July converts into the following recommendations:
Ward off overexposure. Defence against solar harm is crucial. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Boost your sun resistance with garments that are densely woven yet spacious.
Updated: Jul 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the hottest?

In Addison, the peak temperatures are generally noted in July, averaging a high of 81.9°F (27.7°C) and a low of 66.6°F (19.2°C).

What is the usual temperature for Addison in July?

The average high-temperature, in July, in Addison, is 81.9°F (27.7°C), while 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 combines air temperature and relative humidity, is evaluated at 87.8°F (31°C).

What is the average humidity in July?

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

How much does it rain in Addison in July?

In Addison, in July, it is raining for 17.3 days, with typically 2.87" (73mm) of accumulated precipitation.

When it does not snow?

June through September are months without snowfall in Addison.

How many hours of daylight does Addison have in July?

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

When are sunrise and sunset in July?

On the first day of July, sunrise is at 5:20 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 8:11 pm CDT.

What are the months with the most sunshine?

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

How many hours of sunshine does Addison have in July?

The average sunshine duration in July is 10.1h.

When is the highest UV index?

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

What is the UV index intensity in July?

In Addison, the average daily maximum UV index in July is 6. A UV Index of 6 to 7 symbolizes 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
Addison, IL

Average temperature in July - Addison, 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).

Average pressure in July
Addison, IL

Average pressure in July - Addison, 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).

Average wind speed in July
Addison, IL

Average wind speed in July - Addison, 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).

Average humidity in July
Addison, IL

Average humidity in July - Addison, 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%).

Average rainfall in July
Addison, IL

Average rainfall in July - Addison, 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").

Average rainfall days in July
Addison, IL

Average rainfall days in July - Addison, 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).

Average snowfall in July
Addison, IL

Average snowfall in July - Addison, 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").

Average snowfall days in July
Addison, IL

Average snowfall days in July - Addison, 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).

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

Average daylight in July / Average sunshine in July - Addison, 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).

Average sunshine days in July
Addison, IL

Average sunshine days in July - Addison, 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).

Average UV index in July
Addison, IL

Average UV index in July - Addison, 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).

Average cloud cover in July
Addison, IL

Average cloud cover in July - Addison, 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).

Average visibility in July
Addison, IL

Average visibility in July - Addison, 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).

Addison, Illinois, USA

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