July weather forecast
Marietta, GA

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

July, with its average high-temperature of 90.5°F (32.5°C) and an average low-temperature of 71.4°F (21.9°C), holds the record as the warmest month.

Heat index

During July, the heat index is computed to be a blistering 107.6°F (42°C). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

In Marietta, the average relative humidity in July 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 in Marietta.

Daylight

The average length of the day in July in Marietta 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, in Marietta, 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 in Marietta. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: A daily high UV index of 6 in July leads to these guidelines:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.