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September Weather in Fayetteville, United States

Last updated: June 24, 2025

The average temperature in Fayetteville, United States during September hovers around 17°C (63°F), with highs reaching up to 33°C (91°F) and lows dipping to 1°C (34°F). Expect a total precipitation of 93 mm (3.7 in) over approximately 9 days, accompanied by an average humidity of 78%. Perfect for those who enjoy a blend of mild temperatures and occasional showers!

September Temperature in Fayetteville

In September in Fayetteville, the average temperature is 17°C (63°F). Maximums can reach 33°C (91°F) and minimums can be as low as 1°C (34°F). Be sure to pack layers to accommodate the wide temperature range while exploring.

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 17°C (63°F), with highs reaching up to 33°C (91°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec252834455867727063533830
Data source: Temperature data for Fayetteville 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 Fayetteville

In Fayetteville in September, the precipitation amount is 93 mm (3.7 in) over the course 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 93 mm (3.7 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec95999512412911518413893167110105
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Fayetteville

In Fayetteville in September, humidity is 78%. With an average temperature of 17°C (63°F), this humidity feels like a warm, enveloping blanket, making traveling slightly uncomfortable as you navigate the sticky air, prompting the need for frequent breaks in cooler, shaded areas.

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 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%87%88%82%79%78%76%78%84%89%86%
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 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more 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 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3468910997632
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.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)95 mm (3.7 inches)90%moderate
February Weather-2°C (28°F)99 mm (3.9 inches)90%moderate
March Weather1°C (34°F)95 mm (3.8 inches)87%high
April Weather7°C (46°F)124 mm (4.9 inches)88%very high
May Weather14°C (58°F)129 mm (5.1 inches)82%very high
June Weather19°C (67°F)115 mm (4.5 inches)79%very high
July Weather22°C (72°F)184 mm (7.2 inches)78%very high
August Weather21°C (70°F)138 mm (5.4 inches)76%very high
September Weather17°C (63°F)93 mm (3.7 inches)78%high
October Weather12°C (53°F)167 mm (6.6 inches)84%high
November Weather4°C (39°F)110 mm (4.3 inches)89%moderate
December Weather-1°C (31°F)105 mm (4.1 inches)86%low

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