September Weather in Fayetteville, United States

Last updated: February 24, 2025

Experience the dynamic September weather in Fayetteville, United States, where temperatures range from a brisk 4°C (40°F) to a warm 32°C (90°F). The month averages a comfortable 19°C (67°F), making it an ideal time for outdoor activities. However, expect occasional rain, as 10 days see 108 mm (4.2 in) of precipitation, contributing to an overall humidity level of 68%. This blend of warmth and moisture sets the stage for a vivid transition into fall, painting the landscape in rich hues and inviting exploration of the natural beauty Fayetteville has to offer.

September Temperature in Fayetteville

In September, Fayetteville experiences a delightful transition as summer gives way to fall. The temperatures provide a comfortable backdrop for outdoor activities, with minimums around 4°C (40°F) and averages reaching 19°C (67°F). Daytime highs can still flirt with summer warmth, peaking at 32°C (90°F), echoing the high notes of the preceding months. As the month progresses, there's a subtle yet noticeable shift towards cooler days, setting the stage for the crisp autumn weather to come. This blend of lingering warmth and the beginnings of seasonal change makes September a particularly inviting time to explore Fayetteville's scenic landscapes.

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.
JanFebMarAprMayJunJulAugSepOctNovDec333944526268727066574338
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 September, Fayetteville experiences a notable shift in precipitation patterns as summer transitions into fall. With 108 mm (4.2 inches) of rainfall over 10 days, the month reflects a similar wetness to August but with fewer rainy days. This trend of decreased precipitation days continues into the autumn months, hinting at a drier atmosphere ahead. Both September and August showcase a steady rainfall amount, but the drop in rainy days emphasizes the gradual shift towards a more stable, crisp fall climate. Overall, this suggests a pattern where the region begins to dry out, paving the way for the cooler months ahead.

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.
JanFebMarAprMayJunJulAugSepOctNovDec10216412715017213712210810813383123
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, United States, September marks a noticeable shift in humidity levels as the summer heat begins to wane. With an average humidity of 68%, this month is a transitional period, dipping below the more oppressive summer averages and hinting at the upcoming fall. It follows the notable decrease seen from July's 79%, all the way down to August's 66%, indicating a refreshing trend towards drier conditions. This gradual reduction in humidity reflects a broader yearly pattern, with the highest levels recorded during the winter months, particularly in November at 89%. As Fayetteville moves closer to autumn, residents can enjoy the crisp air that September brings, ushering in a more comfortable climate.

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, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%86%84%83%83%79%66%68%78%89%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Fayetteville

As summer transitions into fall, Fayetteville experiences a gradual decline in UV Index levels, but September remains a month of caution. With a UV Index of 9, categorized as very high, residents and visitors should be mindful of their sun exposure, as the burn time shortens to just 15 minutes. This trend showcases how late summer maintains its intensity, even as October's cooler climate begins to approach with its UV Index dropping to 7. Whether enjoying the last warm days outdoors or preparing for the autumn chill, always check the local Fayetteville UV Index for the latest updates and protect your skin accordingly!

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.
JanFebMarAprMayJunJulAugSepOctNovDec36810101111109753
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.

September Sunshine in Fayetteville

As September rolls into Fayetteville, residents can bask in a delightful 284 hours of sunshine, marking a subtle dip from the vibrant summer months. Following the peak sunshine of July with an impressive 346 hours and August holding strong at 314 hours, September offers a comfortable transition into fall. While it shines less brightly than its predecessors, this month still boasts plentiful sunshine, significantly more than January's meager 120 hours. The gradual decline from summer's height signals an inviting shift, with cooler temperatures and the promise of colorful autumn landscapes just around the corner. As daylight begins to wane, September provides a golden opportunity to savor the lingering warmth of late summer while preparing for the cozy embrace of fall.

Monthly Sunshine Duration in Fayetteville: September Highlighted

The September sunshine duration represents the total number of hours Fayetteville experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec120h148h231h240h290h306h346h314h284h245h208h158h
Data source: Fayetteville September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Fayetteville During September

As September rolls into Fayetteville, the likelihood of sunny weather reaches its peak, with a notable 53% chance of sunshine. This marks a significant increase compared to the earlier months of the year, where the chances often lingered below 50%. After a summer filled with variability, September's trends suggest a welcoming embrace of clearer skies, making it an ideal time for outdoor activities. Following this sunny month, the chances tend to fluctuate, with October dropping to 37%, showcasing the transitional nature of the seasons. Overall, September stands out as a month where residents and visitors can relish more sun-soaked days before autumn takes full hold.

Percentage of Sunny Days in September in Fayetteville

The chart illustrates the percentage of sunny days in Fayetteville throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Fayetteville experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec31%22%46%49%34%38%50%42%53%37%48%38%
Data source: Fayetteville September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Fayetteville in September

As September rolls in, Fayetteville experiences a delightful shift in daylight duration, basking in about 12 hours of sunlight. This marks a subtle decline from the peak brightness of 14 hours seen in the height of summer. Following the vibrant month of August, the days begin to transition, hinting at the approaching fall, yet still offering ample time to enjoy outdoor activities. The trend from earlier months illustrates a gradual increase in daylight from winter’s constraints to summer’s abundance, followed by a natural tapering as autumn approaches. This annual rhythm invites residents to embrace the warm hues of early fall while savoring the lingering sunshine before the days shorten further in October.

Average Daylight Hours in Fayetteville for September

The chart illustrates the variation in daylight duration in Fayetteville throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 50m10h 47m11h 58m13h 12m14h 14m14h 45m14h 28m13h 33m12h 22m11h 9m10h 5m9h 33m
Data source: Fayetteville daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Fayetteville

As summer fades and September arrives in Fayetteville, the wind begins to pick up with an average speed of 2.5 m/s (6 mph), providing a refreshing transition into autumn. This change marks a rise from the quieter breezes of July and August, which recorded their lowest averages at 2.1 m/s and 1.9 m/s respectively. The moderately increased wind during September hints at the invigorating shifts of the season, leading into October and November where speeds stabilize around 3.0 m/s (7 mph). This subtle uptick in wind serves as a gentle reminder that fall is just around the corner, inviting residents to embrace the seasonal changes that characterize Fayetteville's delightful climate.

Average September Wind Speed in Fayetteville

The chart displays monthly wind speed patterns in Fayetteville, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.23.43.53.32.72.32.11.92.5 m/s3.03.03.3
Data source: Fayetteville September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Fayetteville Compares to Other Months

The weather in Fayetteville changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Fayetteville and find detailed weather information for every month.

September generally offers a much warmer experience compared to January, with average temperatures ranging from a comfortable 19°C (67°F) to a peak of 32°C (90°F), while January's temperatures hover around a chilly 1°C (33°F) with lows plunging to -20°C (-4°F). Despite September's lower precipitation levels (108 mm over 10 days) compared to January's 101 mm over 14 days, the latter exhibits higher humidity at 87%, leading to a stark contrast in how the two months feel. For a more detailed look at January's weather, you can check out the specifics here: Fayetteville weather in January.

September and February offer contrasting weather experiences. In September, temperatures range from a cool 4°C (40°F) at night to a warm 32°C (90°F) during the day, with an average of 19°C (67°F). This month sees a moderate amount of rainfall, totaling 108 mm (4.2 in) over about 10 days, accompanied by a humidity level of 68%. In stark contrast, February brings much colder temperatures, with nighttime lows plunging to -18°C (0°F) and daytime highs peaking at 25°C (77°F), resulting in an average of just 4°C (39°F). Additionally, February is wetter, with 164 mm (6.4 in) of precipitation occurring over 17 days, and a higher humidity level of 87%. For more detailed information, you can visit Fayetteville weather in February.

September and March present contrasting weather patterns that reflect the transition between summer and spring. In September, temperatures range from a mild 4°C (40°F) at night to a warm average of 19°C (67°F) during the day, peaking at a high of 32°C (90°F). The month sees an average precipitation of 108 mm (4.2 in) over about 10 days, with a humidity level of 68%. In contrast, March experiences colder conditions, with nighttime lows dropping to -15°C (4°F) and an average temperature of only 7°C (44°F), while the daytime high reaches 28°C (82°F). March also tends to be wetter, with 127 mm (5.0 in) of precipitation spread over 15 days and higher humidity at 86%. For a more detailed look at March weather, you can visit Fayetteville weather in March.

September and April present distinct weather patterns in Fayetteville. In September, temperatures range from a cool 4°C (40°F) at night to a warm 32°C (90°F) during the day, averaging around 19°C (67°F). The month typically experiences about 108 mm (4.2 in) of rainfall over 10 days, with a humidity level of 68%. In contrast, April begins with colder nights, with minimum temperatures dropping to -6°C (22°F), but can reach up to 30°C (86°F) in the daytime, averaging around 11°C (53°F). Additionally, April is wetter, recording roughly 150 mm (5.9 in) of precipitation spread across 15 days and higher humidity at 84%. For a closer look at the specific conditions, visit Fayetteville weather in April.

September and May present contrasting weather patterns, showcasing the transition between seasons. In September, temperatures range from a comfortable minimum of 4°C (40°F) to a warm maximum of 32°C (90°F), with an average of 19°C (67°F). In comparison, May experiences cooler nights with temperatures dropping as low as -1°C (30°F) and mild daytime highs around 29°C (85°F), averaging 17°C (62°F). Rainfall also differs significantly; September receives 108 mm (4.2 in) over approximately 10 days, while May sees higher precipitation at 172 mm (6.8 in) across 18 days. Additionally, the humidity is higher in May at 83% compared to September's 68%, contributing to a more muggy atmosphere during that time. For more detailed insights, check out Fayetteville weather in May.

When comparing the weather in September and June, we find distinct differences. September features a wider temperature range with a minimum of 4°C (40°F) and an average of 19°C (67°F), allowing for warmer days that can reach up to 32°C (90°F). In contrast, June starts off warmer with a minimum of 7°C (45°F) and an average temperature of 20°C (68°F), while also peaking at 32°C (89°F). Precipitation is more frequent in June, with 137 mm (5.4 in) over 16 days compared to September's 108 mm (4.2 in) across 10 days. Additionally, June tends to be more humid, with levels at 83%, compared to September’s 68%. For a more detailed look at the weather in June, you can visit Fayetteville weather in June.

When comparing the weather in September to that of July, several notable differences emerge. September experiences a broader range of temperatures, with minimums dropping to 4°C (40°F) and maximums reaching up to 32°C (90°F), while the average temperature is around 19°C (67°F). In contrast, July maintains a milder temperature range, with minimums at 11°C (52°F) and maxima around 31°C (88°F), resulting in an average of 22°C (72°F). Additionally, July tends to be wetter, with 122 mm (4.8 in) of precipitation over 14 days, compared to September's 108 mm (4.2 in) over 10 days. This results in higher humidity levels in July at 79%, while September is slightly lower at 68%. For more detailed information, you can check out Fayetteville weather in July.

In comparing the weather of September and August, September exhibits a wider range in temperature, with minima dropping to 4°C (40°F) compared to August's milder 11°C (51°F). While both months share a maximum temperature peak of 32°C (90°F), September has a slightly lower average temperature of 19°C (67°F) versus August's 21°C (71°F). Precipitation levels are similar, both reaching around 108 mm (4.2-4.3 in), but September experiences rainfall over 10 days, while August sees it over 16 days, indicating a wetter and more humid environment in late summer. For more detailed insights, check out Fayetteville weather in August.

September and October exhibit notable differences in weather conditions. September boasts a minimum temperature of 4°C (40°F) and an average of 19°C (67°F), with highs reaching up to 32°C (90°F). In contrast, October experiences cooler temperatures, with a minimum of -3°C (27°F) and an average of 14°C (57°F), though it can still peak at 31°C (89°F). Precipitation also increases slightly from 108 mm (4.2 in) in September to 132 mm (5.2 in) in October, occurring over 10 and 11 days respectively. Furthermore, October's humidity rises to 78%, compared to September's 68%. For more details on the weather patterns, you can check Fayetteville weather in October.

September and November present a striking contrast in weather conditions. In September, temperatures range from a mild 4°C (40°F) at night, peaking at a warm 32°C (90°F) during the day, creating an overall average of 19°C (67°F). The month experiences a total precipitation of 108 mm (4.2 in) spread over 10 days, with humidity hovering around 68%. In contrast, November sees significantly cooler temperatures, with lows plummeting to -13°C (8°F) and an average of just 6°C (43°F), while reaching a maximum of 24°C (76°F). Total precipitation is lower at 83 mm (3.3 in), but the humidity rises to a notable 89%. This shift from the warmer, drier days of September to the colder, wetter conditions of November can be substantial. For more insights on November weather, you can check Fayetteville weather in November.

September and December present strikingly different weather patterns. In September, temperatures range from a mild 4°C (40°F) at night to a warm average of 19°C (67°F) during the day, with highs reaching up to 32°C (90°F). The month experiences about 108 mm (4.2 in) of precipitation over 10 days, while humidity sits at a comfortable 68%. In contrast, December brings a significant drop in temperature, with lows plummeting to -15°C (4°F) and a much cooler average of 3°C (38°F). The maximum temperature in December can reach only up to 20°C (67°F). This month also sees increased precipitation at 123 mm (4.8 in) over 14 days, along with higher humidity levels at 86%. For more details on winter conditions, check out Fayetteville weather in December.

Compare Fayetteville's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Fayetteville

September in Fayetteville ushers in a notable transition, as the temperatures begin to cool from the sweltering summer heat, creating a refreshing ambiance. With an average temperature hovering around a comfortable 19°C (67°F), it provides a delightful balance, while still allowing for warm days, reaching up to 32°C (90°F). This month also sees a rise in humidity, which can add to the subtropical feel, but the increase in precipitation—approximately 108 mm over 10 days—indicates a shift towards wetter conditions, unlike the drier summer months. Overall, September lays the groundwork for the upcoming autumn, making it a unique blend of warmth and refreshing rain. Learn more about the changing seasons by visiting Fayetteville Climate.