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September Weather in Piedmont, United States

Last updated: June 24, 2025

In September, the average temperature in Piedmont, United States hovers around 24°C (75°F). As you enjoy the weather, be prepared for a range that dips to a cool 11°C (51°F) and can soar to a warm 36°C (97°F). Expect 96 mm (3.8 in) of precipitation spread over 9 days, contributing to the average humidity level of 73%.

September Temperature in Piedmont

In September in Piedmont, the average temperature is 24°C (75°F). Maximums can reach 36°C (97°F) and minimums can be as low as 11°C (51°F). This makes Piedmont a great destination for travelers seeking a warm climate with comfortable evenings.

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 24°C (75°F), with highs reaching up to 36°C (97°F) and lows dropping to around 11°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec455156627177807975665248
Data source: Temperature data for Piedmont generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Piedmont

In Piedmont in September, the total precipitation amount is 96 mm (3.8 in) spread over a period of 9 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 96 mm (3.8 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec1121681371421051211121449612785142
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Piedmont

In Piedmont in September humidity is 73%. With an average temperature of 24°C (75°F), this humidity feels like a warm embrace, making it somewhat uncomfortable for traveling if you're not acclimated, as sweat clings to your skin and limits your energy for exploration.

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 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%82%82%81%77%77%72%73%73%85%88%
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.
JanFebMarAprMayJunJulAugSepOctNovDec47810111111119864
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.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)112 mm (4.4 inches)85%moderate
February Weather10°C (51°F)168 mm (6.6 inches)84%high
March Weather14°C (57°F)137 mm (5.4 inches)82%very high
April Weather17°C (62°F)142 mm (5.6 inches)82%very high
May Weather22°C (72°F)105 mm (4.1 inches)81%extreme
June Weather25°C (77°F)121 mm (4.8 inches)77%extreme
July Weather27°C (80°F)112 mm (4.4 inches)77%extreme
August Weather26°C (79°F)144 mm (5.7 inches)72%extreme
September Weather24°C (75°F)96 mm (3.8 inches)73%very high
October Weather19°C (66°F)127 mm (5.0 inches)73%very high
November Weather11°C (52°F)85 mm (3.3 inches)85%high
December Weather9°C (48°F)142 mm (5.6 inches)88%moderate

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