Fayetteville
Arkansas, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Fayetteville, AR

Green trees and parked cars on the roadsides of College Avenue leading to the iconic Washington County Courthouse in Fayetteville, Arkansas
Green trees and parked cars on the roadsides of College Avenue leading to the iconic Washington County Courthouse in Fayetteville, Arkansas
September, the first month of the autumn, in Fayetteville, is still a warm month, with temperature in the range of an average low of 59.2°F (15.1°C) and an average high of 81.1°F (27.3°C).

Temperature

In Fayetteville, the average high-temperature marginally drops, from a tropical 89.2°F (31.8°C) in August, to a moderately hot 81.1°F (27.3°C). In September, the average low-temperature is 59.2°F (15.1°C).

Rainfall

In September, in Fayetteville, Arkansas, the rain falls for 8.5 days. Throughout September, 4.6" (115.8mm) of precipitation is accumulated. Throughout the year, there are 100.7 rainfall days, and 45.5" (1156.5mm) of precipitation is accumulated.

Snowfall

In Fayetteville, Arkansas, snow does not fall in May through October.

Daylight

In September, the average length of the day in Fayetteville is 12.4h.

Sunshine

In September, the average sunshine in Fayetteville is 8h.

UV index

In September, the average daily maximum UV index is 7. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 7 in September interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in September in Fayetteville?

The average high-temperature, in September, in Fayetteville, Arkansas, is 81.1°F (27.3°C), while the average low-temperature is 59.2°F (15.1°C).

How much does it rain in Fayetteville in September?

In September, in Fayetteville, the rain falls for 8.5 days. Throughout September, 4.6" (115.8mm) of precipitation is accumulated.

When it does not snow in Fayetteville?

In Fayetteville snow does not fall in May through October.

What is the average length of the day in September in Fayetteville?

In Fayetteville, the average length of the day in September is 12.4h.

How long on average sun shines in September in Fayetteville?

In Fayetteville, the average sunshine in September is 8h.

How high is the UV index in September in Fayetteville?

In September, the average daily maximum UV index in Fayetteville, Arkansas, is 7. A UV Index value of 6 to 7 symbolizes a high health threat from unprotected exposure to the UV radiation.
Average temperature in September - Fayetteville, AR
  • Average high temperature in September: 81.2°F

The warmest month (with the highest average high temperature) is August (89.2°F).
The month with the lowest average high temperature is January (46.4°F).

  • Average low temperature in September: 59.2°F

The month with the highest average low temperature is July (69.2°F).
The coldest month (with the lowest average low temperature) is January (26.3°F).

Average rainfall in September - Fayetteville, AR
  • Average rainfall in September: 4.6"

The wettest month (with the highest rainfall) is May (5.2").
The driest month (with the lowest rainfall) is February (2.4").

Average rainfall days in September - Fayetteville, AR
  • Average rainfall days in September: 8.5 days

The month with the highest number of rainy days is May (12.4 days).
The month with the lowest number of rainy days is January (6.5 days).

Average snowfall in September - Fayetteville, AR
  • Average snowfall in September: 0"

The month with the highest snowfall is January (2.8").
Months with the lowest snowfall are May, June, July, August, September and October (0").

Average snowfall days in September - Fayetteville, AR
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (1.1 days).
Months with the lowest number of snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in September / Average sunshine in September - Fayetteville, AR
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.6h).
The month with shortest days is December (Average daylight: 9.7h).

  • Average sunshine in September: 8h

The month with most sunshine is July (Average sunshine: 11h).
Months with least sunshine are November and December (Average sunshine: 5).

Average UV index in September - Fayetteville, AR
  • Average UV index in September: 7

Months with the highest UV index are June and July (UV index 10).
Months with the lowest UV index are January and December (UV index 2).