September Weather in Greenville, United States

Last updated: June 24, 2025

In September, the average temperature in Greenville, United States is a comfortable 22°C (72°F), with a minimum reaching 7°C (44°F) and a maximum soaring to 34°C (93°F). Expect some moisture, with 61 mm (2.4 in) of precipitation spread across 6 days. Stay refreshed with an average humidity of 79%!

September Temperature in Greenville

In September in Greenville, the average temperature is 22°C (72°F), with maximums reaching up to 34°C (93°F) and minimums dropping as low as 7°C (44°F). This pleasant range in temperatures makes Greenville an ideal destination for travelers seeking a comfortable climate.

September Weather in Greenville: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Greenville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Greenville, September typically has an average temperature of 22°C (72°F), with highs reaching up to 34°C (93°F) and lows dropping to around 7°C (44°F).

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

September Precipitation in Greenville

In Greenville in September, the total precipitation amount is 61 mm (2.4 in) spread over a period of 6 days.

September Precipitation Trends in Greenville

The chart displays monthly precipitation patterns in Greenville, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Greenville, September typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 6 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Greenville

In Greenville in September humidity is 79%. With an average temperature of 22°C (72°F), this humidity feels like you are enveloped in a warm, heavy blanket, making it feel considerably hotter and adding a layer of stickiness to your skin as you navigate through the streets.

September Average Humidity in Greenville

This chart illustrates the average monthly humidity levels in Greenville, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Greenville is approximately 79%, offering insight into how humid the weather typically is during this month.

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

September UV Index in Greenville

In Greenville in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Greenville.

Maximum UV Index Levels in Greenville for September

The chart shows the monthly maximum UV Index (UVI) for Greenville in September, 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 September, the maximum UV index in Greenville typically reaches 9, which falls under the very high exposure category.

Data source: Greenville September 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 September Weather in Greenville Compares to Other Months

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

This table compares monthly weather conditions in Greenville, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	79 mm (3.1 inches)	84%	moderate
February Weather	1°C (35°F)	81 mm (3.2 inches)	82%	moderate
March Weather	8°C (46°F)	133 mm (5.2 inches)	84%	high
April Weather	12°C (55°F)	143 mm (5.6 inches)	83%	very high
May Weather	19°C (67°F)	161 mm (6.3 inches)	80%	very high
June Weather	25°C (77°F)	110 mm (4.3 inches)	83%	extreme
July Weather	26°C (79°F)	98 mm (3.9 inches)	82%	extreme
August Weather	24°C (76°F)	113 mm (4.4 inches)	82%	very high
September Weather	22°C (72°F)	61 mm (2.4 inches)	79%	very high
October Weather	15°C (59°F)	107 mm (4.2 inches)	79%	high
November Weather	6°C (43°F)	79 mm (3.1 inches)	88%	moderate
December Weather	3°C (38°F)	63 mm (2.5 inches)	87%	moderate