September weather forecast
Asheville, NC

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A colorful townscape of the scenic Asheville City in North Carolina
A colorful townscape of the scenic Asheville City in North Carolina

Weather in September

September signals the arrival of fall in Asheville with dropping temperatures and decreasing daylight hours. While the daylight duration dips to 12.4 hours, the fall season provides scenic beauty as the leaves start transforming into vibrant shades of orange and red. In a gradual transition from the heat of summer, the pleasing weather conditions in September make it an ideal month for hiking or apple picking. As the mountainsides start showing off their fall colours, Asheville takes on a distinct golden hue. September’s blend of warm days and cool nights primes the city for yet another spectacular season change.

Temperature

Asheville commences September with an average high-temperature of a still moderately hot 77.7°F (25.4°C), maintaining a close resemblance to the previous month. September nights in Asheville present a sharp contrast to daytime highs, with average temperatures of 55.9°F (13.3°C).

Humidity

The average relative humidity in September in Asheville is 77%.

Rainfall

June and September are months with the least rain when the rain falls for 12.5 days and typically aggregates up to 1.73" (44mm) of rain.

Snowfall

May through October are months without snowfall in Asheville.

Daylight

The average length of the day in September is 12h and 23min.
On the first day of September, sunrise is at 7:02 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 7:14 pm EDT.

Sunshine

The average sunshine in September in Asheville is 8.2h.

UV index

In Asheville, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 4 in September translates into these instructions:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
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Frequently asked questions

What are September temperatures in Asheville?

In September, in Asheville, the average high-temperature is 77.7°F (25.4°C), and the average low-temperature is 55.9°F (13.3°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in August is appraised at 89.6°F (32°C).

What is the average humidity in September in Asheville?

The average relative humidity in September in Asheville is 77%.

What is the driest month in Asheville?

June and September are months with the least rain in Asheville when the rain falls for 12.5 days and typically aggregates up to 1.73" (44mm) of rain.

How many days does it rain in September in Asheville?

In Asheville, North Carolina, during September, the rain falls for 12.5 days and regularly aggregates up to 1.73" (44mm) of precipitation.

When it does not snow in Asheville?

May through October are months without snowfall in Asheville.

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

In Asheville, North Carolina, the average day length in September is 12h and 23min.

What time are sunrise and sunset in September in Asheville?

In September, on the first day of the month, sunrise is at 7:02 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 7:14 pm EDT.

How many hours of sunshine does Asheville have in September?

The average sunshine duration in September in Asheville is 8.2h.

What is the UV index intensity in September in Asheville?

In September, the average daily maximum UV index in Asheville is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Asheville, NC

Average temperature in September - Asheville, NC
  • Average high temperature in September: 77.7°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (44.1°F).

  • Average low temperature in September: 55.9°F

The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).

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Average pressure in September
Asheville, NC

Average pressure in September - Asheville, NC
  • Average pressure in September: 30.05"Hg

The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).

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Average wind speed in September
Asheville, NC

Average wind speed in September - Asheville, NC
  • Average wind speed in September: 4mph

The windiest months (with the highest average wind speed) are January and April (6.4mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).

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Average humidity in September
Asheville, NC

Average humidity in September - Asheville, NC
  • Average humidity in September: 77%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is November (73%).

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Average rainfall in September
Asheville, NC

Average rainfall in September - Asheville, NC
  • Average rainfall in September: 1.73"

The wettest month (with the highest rainfall) is December (3.54").
The driest months (with the least rainfall) are June and September (1.73").

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Average rainfall days in September
Asheville, NC

Average rainfall days in September - Asheville, NC
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is November (9.1 days).

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Average snowfall in September
Asheville, NC

Average snowfall in September - Asheville, NC
  • Average snowfall in September: 0"

The month with the highest snowfall is December (4.21").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Asheville, NC

Average snowfall days in September - Asheville, NC
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (4.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Asheville, NC

Average daylight in September / Average sunshine in September - Asheville, NC
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in September: 8h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

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Average sunshine days in September
Asheville, NC

Average sunshine days in September - Asheville, NC
  • Average sunshine days in September: 16.2 days

The month with the most sunshine days is October (20.2 days).
The month with the least sunshine days is May (11.6 days).

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Average UV index in September
Asheville, NC

Average UV index in September - Asheville, NC
  • Average UV index in September: 4

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).

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Average cloud cover in September
Asheville, NC

Average cloud cover in September - Asheville, NC
  • Average cloud cover in September: 37

The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is June (Cloud cover 31).

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Average visibility in September
Asheville, NC

Average visibility in September - Asheville, NC
  • Average visibility in September: 5mi

The months with the highest visibility are February, June, July and November (6mi).
The months with the lowest visibility are January, March, April, May, August, September, October and December (5mi).

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Asheville, North Carolina, USA

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