September Weather in Fayetteville, United States

Last updated: June 24, 2025

In Fayetteville, United States during September, the average temperature hovers around 23°C (74°F), with a minimum of 10°C (50°F) and a peak of 36°C (97°F). Expect 112 mm (4.4 in) of precipitation spread over 9 days, contributing to an average humidity of 64%. Prepare for a mix of warmth and moisture as you enjoy this vibrant month!

September Temperature in Fayetteville

In September in Fayetteville, the average temperature is 23°C (74°F). Maximum can reach 36°C (97°F), and the minimum can be as low as 10°C (50°F). This makes Fayetteville an ideal destination for travelers seeking warm weather while still having the option for cooler evenings.

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

The chart illustrates September temperature patterns in Fayetteville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fayetteville, September typically has an average temperature of 23°C (74°F), with highs reaching up to 36°C (97°F) and lows dropping to around 10°C (50°F).

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

September Precipitation in Fayetteville

In Fayetteville in September, the total precipitation amount is 112 mm (4.4 in), occurring over a span of 9 days.

September Precipitation Trends in Fayetteville

The chart displays monthly precipitation patterns in Fayetteville, 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 Fayetteville, September typically receives around 112 mm (4.4 inches) of precipitation spread over approximately 9 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 Fayetteville

In Fayetteville in September, humidity is 64%. With an average temperature of 23°C (74°F), this humidity feels like a warm blanket wrapping around you, making outdoor exploration enjoyable yet slightly sticky, so it's best to stay hydrated and take breaks in the shade while traveling.

September Average Humidity in Fayetteville

This chart illustrates the average monthly humidity levels in Fayetteville, 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 Fayetteville is approximately 64%, 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 Fayetteville

In Fayetteville 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 Fayetteville.

Maximum UV Index Levels in Fayetteville for September

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

Data source: Fayetteville 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 Fayetteville Compares to Other Months

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

This table compares monthly weather conditions in Fayetteville, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (42°F)	111 mm (4.4 inches)	87%	moderate
February Weather	8°C (47°F)	180 mm (7.1 inches)	87%	high
March Weather	12°C (54°F)	193 mm (7.6 inches)	85%	very high
April Weather	16°C (60°F)	151 mm (5.9 inches)	82%	very high
May Weather	21°C (70°F)	110 mm (4.3 inches)	83%	extreme
June Weather	25°C (77°F)	141 mm (5.6 inches)	82%	extreme
July Weather	26°C (80°F)	147 mm (5.8 inches)	78%	extreme
August Weather	26°C (78°F)	124 mm (4.9 inches)	67%	very high
September Weather	23°C (74°F)	112 mm (4.4 inches)	64%	very high
October Weather	18°C (64°F)	115 mm (4.5 inches)	74%	high
November Weather	10°C (50°F)	73 mm (2.9 inches)	87%	moderate
December Weather	8°C (47°F)	145 mm (5.7 inches)	88%	moderate