September Weather in Charlotte, United States

Last updated: June 24, 2025

In September, the average temperature in Charlotte, United States is a warm 28°C (83°F). Temperatures can vary significantly, with lows of 14°C (57°F) and highs reaching 40°C (105°F). Expect around 99 mm (3.9 in) of precipitation over approximately 9 days, accompanied by an average humidity level of 65%. 🌤️💧

September Temperature in Charlotte

In September in Charlotte, the average temperature is 28°C (83°F). The maximum can reach 40°C (105°F), and the minimum can be as low as 14°C (57°F). This variability makes Charlotte an ideal destination for travelers seeking both warm afternoons and cooler evenings.

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

The chart illustrates September temperature patterns in Charlotte, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Charlotte, September typically has an average temperature of 28°C (83°F), with highs reaching up to 40°C (105°F) and lows dropping to around 14°C (57°F).

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

September Precipitation in Charlotte

In Charlotte in September, the precipitation amount is 99 mm (3.9 in) during a span of 9 days.

September Precipitation Trends in Charlotte

The chart displays monthly precipitation patterns in Charlotte, 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 Charlotte, September typically receives around 99 mm (3.9 inches) of precipitation spread over approximately 9 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 Charlotte

In Charlotte in September, humidity is 65%. With an average temperature of 28°C (83°F), this humidity feels like a warm, tropical embrace that can make outdoor activities feel quite sticky and draining, so it's best to stay hydrated and take regular breaks in the shade.

September Average Humidity in Charlotte

This chart illustrates the average monthly humidity levels in Charlotte, 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 Charlotte is approximately 65%, 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 Charlotte

In Charlotte in September, 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 Charlotte.

Maximum UV Index Levels in Charlotte for September

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

Data source: Charlotte 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 Charlotte Compares to Other Months

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

This table compares monthly weather conditions in Charlotte, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (56°F)	30 mm (1.2 inches)	79%	moderate
February Weather	15°C (59°F)	40 mm (1.6 inches)	79%	very high
March Weather	20°C (68°F)	50 mm (2.0 inches)	74%	very high
April Weather	23°C (74°F)	48 mm (1.9 inches)	76%	extreme
May Weather	27°C (81°F)	101 mm (4.0 inches)	81%	extreme
June Weather	30°C (85°F)	54 mm (2.1 inches)	76%	extreme
July Weather	31°C (87°F)	64 mm (2.5 inches)	66%	extreme
August Weather	31°C (88°F)	39 mm (1.5 inches)	58%	extreme
September Weather	28°C (83°F)	99 mm (3.9 inches)	65%	extreme
October Weather	24°C (75°F)	68 mm (2.7 inches)	74%	very high
November Weather	18°C (64°F)	37 mm (1.5 inches)	81%	high
December Weather	15°C (59°F)	37 mm (1.4 inches)	86%	moderate