July Weather in Marietta, United States

Last updated: June 24, 2025

In Marietta, United States, the average temperature in July hovers around 29°C (84°F), with a minimum of 18°C (64°F) and a sweltering maximum of 41°C (107°F). Expect 48 mm (1.9 in) of precipitation spread over 6 days, while the average humidity remains high at 73%. Plan your activities accordingly to enjoy the warmth!

July Temperature in Marietta

In July in Marietta, the average temperature is 29°C (84°F). Maximums can reach 41°C (107°F), and minimums can be as low as 18°C (64°F). Travelers should be prepared for hot days and mild evenings.

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 29°C (84°F), with highs reaching up to 41°C (107°F) and lows dropping to around 18°C (64°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 48 mm (1.9 in) distributed over 6 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 48 mm (1.9 inches) of precipitation spread over approximately 6 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 73%. With an average temperature of 29°C (84°F), this humidity feels like a warm blanket wrapped around you, making travel slightly uncomfortable as you sweat and seek shade, yet still inviting you to explore the vibrant local culture and activities.

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 73%, 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	6°C (44°F)	61 mm (2.4 inches)	80%	moderate
February Weather	8°C (46°F)	84 mm (3.3 inches)	79%	high
March Weather	14°C (58°F)	95 mm (3.7 inches)	78%	very high
April Weather	17°C (63°F)	96 mm (3.8 inches)	78%	very high
May Weather	22°C (73°F)	122 mm (4.8 inches)	81%	extreme
June Weather	27°C (80°F)	103 mm (4.1 inches)	78%	extreme
July Weather	29°C (84°F)	48 mm (1.9 inches)	73%	extreme
August Weather	28°C (83°F)	94 mm (3.7 inches)	66%	extreme
September Weather	25°C (77°F)	102 mm (4.0 inches)	65%	very high
October Weather	18°C (65°F)	138 mm (5.4 inches)	72%	very high
November Weather	12°C (54°F)	50 mm (2.0 inches)	82%	high
December Weather	9°C (49°F)	57 mm (2.2 inches)	87%	moderate