July Weather in Sumter, United States

Last updated: June 24, 2025

In Sumter, United States, the average temperature for July hovers around 28°C (82°F). Expect a minimum of 17°C (63°F) and a maximum soaring up to 38°C (100°F). During this month, the region experiences approximately 144 mm (5.7 in) of precipitation spread over 17 days, contributing to an average humidity of 80%.

July Temperature in Sumter

In July in Sumter, the average temperature is 28°C (82°F). Maximums can reach 38°C (100°F) and minimums can be as low as 17°C (63°F). This weather makes it an excellent time for travelers to enjoy outdoor activities and explore the area comfortably.

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

The chart illustrates July temperature patterns in Sumter, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sumter, July typically has an average temperature of 28°C (82°F), with highs reaching up to 38°C (100°F) and lows dropping to around 17°C (63°F).

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

July Precipitation in Sumter

In Sumter in July, the precipitation amount is 144 mm (5.7 in) over the course of 17 days.

July Precipitation Trends in Sumter

The chart displays monthly precipitation patterns in Sumter, 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 Sumter, July typically receives around 144 mm (5.7 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 Sumter

In Sumter in July, humidity is 80%. With an average temperature of 28°C (82°F), this humidity feels like a warm, thick blanket enveloping you, making outdoor activities sweaty and demanding frequent breaks in the shade while traveling.

July Average Humidity in Sumter

This chart illustrates the average monthly humidity levels in Sumter, 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 Sumter is approximately 80%, 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 Sumter

In Sumter 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 Sumter.

Maximum UV Index Levels in Sumter for July

The chart shows the monthly maximum UV Index (UVI) for Sumter 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 Sumter typically reaches 11, which falls under the extreme exposure category.

Data source: Sumter 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 Sumter Compares to Other Months

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

This table compares monthly weather conditions in Sumter, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (48°F)	78 mm (3.1 inches)	86%	moderate
February Weather	12°C (54°F)	95 mm (3.7 inches)	81%	high
March Weather	14°C (58°F)	70 mm (2.8 inches)	81%	very high
April Weather	18°C (65°F)	102 mm (4.0 inches)	79%	very high
May Weather	23°C (74°F)	97 mm (3.8 inches)	75%	extreme
June Weather	26°C (79°F)	122 mm (4.8 inches)	75%	extreme
July Weather	28°C (82°F)	144 mm (5.7 inches)	80%	extreme
August Weather	27°C (81°F)	128 mm (5.0 inches)	81%	very high
September Weather	25°C (78°F)	136 mm (5.4 inches)	83%	very high
October Weather	21°C (69°F)	56 mm (2.2 inches)	78%	very high
November Weather	13°C (55°F)	67 mm (2.6 inches)	85%	high
December Weather	10°C (51°F)	141 mm (5.5 inches)	87%	moderate