July Weather in Marietta, United States

Last updated: June 24, 2025

In July, the average temperature in Marietta, United States hovers around 26°C (79°F). Temperatures can range from a comfortable 16°C (62°F) to a sizzling 34°C (94°F). Expect about 117 mm (4.6 in) of precipitation over approximately 17 days, contributing to an average humidity of 83%. Stay prepared for the warm and humid days ahead!

July Temperature in Marietta

In July in Marietta, the average temperature is 26°C (79°F). Maximums can reach 34°C (94°F), and minimums can be as low as 16°C (62°F). This pleasant climate makes Marietta an ideal destination for travelers seeking warm weather and comfortable conditions.

July Weather in Marietta: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Marietta, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Marietta, July typically has an average temperature of 26°C (79°F), with highs reaching up to 34°C (94°F) and lows dropping to around 16°C (62°F).

Data source: Temperature data for Marietta generated using information from the Copernicus Climate Change Service.

July Precipitation in Marietta

In Marietta in July, the precipitation amount is 117 mm (4.6 in) over the course of 17 days.

July Precipitation Trends in Marietta

The chart displays monthly precipitation patterns in Marietta, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Marietta, July typically receives around 117 mm (4.6 inches) of precipitation spread over approximately 17 days.

Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

July Humidity in Marietta

In Marietta in July, humidity is 83%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket enveloping you, making travel an exercise in endurance as the air clings to your skin and saps your energy.

July Average Humidity in Marietta

This chart illustrates the average monthly humidity levels in Marietta, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Marietta is approximately 83%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Marietta

In Marietta in July, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Marietta.

Maximum UV Index Levels in Marietta for July

The chart shows the monthly maximum UV Index (UVI) for Marietta in July, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In July, the maximum UV index in Marietta typically reaches 11, which falls under the extreme exposure category.

Data source: Marietta July UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How July Weather in Marietta Compares to Other Months

Weather in Marietta varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Marietta, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Marietta, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (45°F)	113 mm (4.5 inches)	86%	moderate
February Weather	10°C (50°F)	158 mm (6.2 inches)	84%	high
March Weather	13°C (56°F)	142 mm (5.6 inches)	83%	very high
April Weather	16°C (62°F)	132 mm (5.2 inches)	81%	very high
May Weather	21°C (71°F)	111 mm (4.4 inches)	81%	extreme
June Weather	24°C (76°F)	127 mm (5.0 inches)	81%	extreme
July Weather	26°C (79°F)	117 mm (4.6 inches)	83%	extreme
August Weather	26°C (78°F)	150 mm (5.9 inches)	81%	very high
September Weather	23°C (74°F)	114 mm (4.5 inches)	82%	very high
October Weather	18°C (65°F)	137 mm (5.4 inches)	78%	very high
November Weather	11°C (52°F)	85 mm (3.4 inches)	86%	high
December Weather	9°C (48°F)	142 mm (5.6 inches)	89%	moderate