September weather forecast and climate
Gatlinburg, TN

What is the temperature in September in Gatlinburg?

In September, the average high-temperature is 79.7°F (26.5°C), and the average low-temperature is 54.9°F (12.7°C).

How many days does it rain in September in Gatlinburg?

In Gatlinburg, in September, during 10 rainfall days, typically, 4.4" (110.5mm) of precipitation is accumulated.
Average temperature in September - Gatlinburg, TN
  • Average high temperature in September: 79.7°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (48.4°F).

  • Average low temperature in September: 54.9°F

The month with the highest average low temperature is July (62.3°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

Average rainfall in September - Gatlinburg, TN
  • Average rainfall in September: 4.4"

The wettest month (with the highest rainfall) is May (5.9").
The driest month (with the lowest rainfall) is October (2.7").

Average rainfall days in September - Gatlinburg, TN
  • Average rainfall days in September: 10 days

The month with the highest number of rainy days is May (15 days).
Months with the lowest number of rainy days are September and October (10 days).

Average snowfall in September - Gatlinburg, TN
  • Average snowfall in September: 0"

The month with the highest snowfall is January (3.6").
Months with the lowest snowfall are May, June, July, August, September and October (0").

Average daylight in September / Average sunshine in September - Gatlinburg, TN
  • 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: 9.8h).

  • Average sunshine in September: 7h

Months with most sunshine are May, June and July (Average sunshine: 9h).
The month with least sunshine is December (Average sunshine: 4h).

Average UV index in September - Gatlinburg, TN
  • Average UV index in September: 8

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

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