September Weather in Piedmont, United States

Last updated: June 24, 2025

In September, the average temperature in Piedmont, United States hovers around 22°C (73°F). Expect a range where the minimum can drop to 8°C (46°F) and the maximum can soar to 36°C (96°F). During this time, the area experiences an average precipitation amount of 68 mm (2.7 in) over about 7 days, accompanied by an average humidity level of 68%.

September Temperature in Piedmont

In September in Piedmont, the average temperature is 22°C (73°F), with maximums reaching 36°C (96°F) and minimums dropping as low as 8°C (46°F). This makes Piedmont an ideal destination for travelers seeking warm weather during the day and cooler evenings for a comfortable experience.

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

The chart illustrates September temperature patterns in Piedmont, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Piedmont, September typically has an average temperature of 22°C (73°F), with highs reaching up to 36°C (96°F) and lows dropping to around 8°C (46°F).

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

September Precipitation in Piedmont

In Piedmont in September, the precipitation amount is 68 mm (2.7 in) over the course of 7 days.

September Precipitation Trends in Piedmont

The chart displays monthly precipitation patterns in Piedmont, 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 Piedmont, September typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 7 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Piedmont

In Piedmont in September humidity is 68%. With an average temperature of 22°C (73°F), this humidity feels like a warm embrace that can make outdoor activities a bit sticky, so staying hydrated is essential while exploring the sights.

September Average Humidity in Piedmont

This chart illustrates the average monthly humidity levels in Piedmont, 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 Piedmont is approximately 68%, 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 Piedmont

In Piedmont 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 Piedmont.

Maximum UV Index Levels in Piedmont for September

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

Data source: Piedmont 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 Piedmont Compares to Other Months

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

This table compares monthly weather conditions in Piedmont, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (35°F)	87 mm (3.4 inches)	83%	moderate
February Weather	4°C (39°F)	110 mm (4.3 inches)	81%	high
March Weather	9°C (49°F)	151 mm (6.0 inches)	80%	high
April Weather	13°C (56°F)	158 mm (6.2 inches)	80%	very high
May Weather	19°C (67°F)	177 mm (7.0 inches)	83%	very high
June Weather	24°C (76°F)	87 mm (3.4 inches)	83%	extreme
July Weather	26°C (80°F)	100 mm (3.9 inches)	76%	extreme
August Weather	24°C (76°F)	106 mm (4.2 inches)	69%	very high
September Weather	22°C (73°F)	68 mm (2.7 inches)	68%	very high
October Weather	15°C (60°F)	127 mm (5.0 inches)	72%	high
November Weather	7°C (46°F)	76 mm (3.0 inches)	83%	moderate
December Weather	5°C (41°F)	77 mm (3.0 inches)	86%	moderate