July weather forecast
Marietta, GA

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Weather in July

July is predominantly hot in Marietta, marking the height of the summer season. With recorded highest temperature hovering around 90.5°F (32.5°C), it's the warmest month in the city. The sweltering heat of July moderately cools off as August arrives. Despite the considerable warmth, evenings are characterized by a refreshing coolness, providing much-needed relief. The city, under a mostly clear sky, presents an ideal landscape for summer adventures.

Temperature

The warmest temperatures occur during July, when averages reach a peak of 90.5°F (32.5°C) and a low of 71.4°F (21.9°C).

Heat index

July's heat index is calculated to be a blisteringly hot 107.6°F (42°C). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Heat index details are generally centered around shaded locations and a mild breeze. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

In July, the average relative humidity is 69%.

Rainfall

In Marietta, in July, it is raining for 19.6 days, with typically 4.17" (106mm) of accumulated precipitation. In Marietta, during the entire year, the rain falls for 177.1 days and collects up to 41.93" (1065mm) of precipitation.

Snowfall

April through November are months without snowfall.

Daylight

In July, the average length of the day is 14h and 9min.
On the first day of the month, sunrise is at 6:31 am and sunset at 8:53 pm. On the last day of July, sunrise is at 6:49 am and sunset at 8:39 pm EDT.

Sunshine

July has the most sunshine of the year, with an average of 10.6h of sunshine.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: In July, a daily UV index of 6 turns into the following recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Updated: Aug 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the hottest?

With average high and low temperatures of 90.5°F (32.5°C) and 71.4°F (21.9°C) respectively, July is Marietta's warmest month.

How hot is it in July?

The average high-temperature, in July, in Marietta, is 90.5°F (32.5°C), while the average low-temperature is 71.4°F (21.9°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in July is calculated to be 107.6°F (42°C).

What is the average humidity in July in Marietta?

In Marietta, the average relative humidity in July is 69%.

How much does it rain in July?

In Marietta, Georgia, during July, the rain falls for 19.6 days and regularly aggregates up to 4.17" (106mm) of precipitation.

When it does not snow?

April through November are months without snowfall.

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

In Marietta, the average day length in July is 14h and 9min.

When are sunrise and sunset in July?

On the first day of July, sunrise is at 6:31 am and sunset at 8:53 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 8:39 pm EDT.

What month has the most sunshine?

July has the most sunshine of the year, with an average of 10.6h of sunshine.

How many hours of sunshine does Marietta have in July?

In July, the average sunshine duration is 10.6h.

What are the months with the highest UV index?

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

How high is the UV index in July?

In July, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes 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
Marietta, GA

Average temperature in July - Marietta, GA
  • Average high temperature in July: 90.5°F

The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (49.6°F).

  • Average low temperature in July: 71.4°F

The month with the highest average low temperature is July (71.4°F).
The coldest month (with the lowest average low temperature) is January (34.2°F).

Average pressure in July
Marietta, GA

Average pressure in July - Marietta, GA
  • Average pressure in July: 30.01"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).

Average wind speed in July
Marietta, GA

Average wind speed in July - Marietta, GA
  • Average wind speed in July: 4.7mph

The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).

Average humidity in July
Marietta, GA

Average humidity in July - Marietta, GA
  • Average humidity in July: 69%

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is August (68%).

Average rainfall in July
Marietta, GA

Average rainfall in July - Marietta, GA
  • Average rainfall in July: 4.17"

The wettest month (with the highest rainfall) is August (4.88").
The driest month (with the least rainfall) is October (2.24").

Average rainfall days in July
Marietta, GA

Average rainfall days in July - Marietta, GA
  • Average rainfall days in July: 19.6 days

The month with the highest number of rainy days is July (19.6 days).
The month with the least rainy days is November (9.5 days).

Average snowfall in July
Marietta, GA

Average snowfall in July - Marietta, GA
  • Average snowfall in July: 0"

The month with the highest snowfall is January (0.98").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in July
Marietta, GA

Average snowfall days in July - Marietta, GA
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (1.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in July /
Average sunshine in July
Marietta, GA

Average daylight in July / Average sunshine in July - Marietta, GA
  • Average daylight in July: 14h and 1min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in July: 10h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

Average sunshine days in July
Marietta, GA

Average sunshine days in July - Marietta, GA
  • Average sunshine days in July: 9.6 days

The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is July (9.6 days).

Average UV index in July
Marietta, GA

Average UV index in July - Marietta, GA
  • Average UV index in July: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).

Average cloud cover in July
Marietta, GA

Average cloud cover in July - Marietta, GA
  • Average cloud cover in July: 32

The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 31).

Average visibility in July
Marietta, GA

Average visibility in July - Marietta, GA
  • 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).

Marietta, Georgia, USA

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