Contents
Weather in September
Temperature
September's advent in Great Smoky Mountains National Park presents an average high-temperature of an enjoyable 64.9°F (18.3°C), indicating a slight variation from the conditions of the previous month. The average low-temperature of 50°F (10°C) is witnessed in Great Smoky Mountains National Park during September.Rainfall
In Great Smoky Mountains National Park, during September, the rain falls for 8 days and regularly aggregates up to 5.87" (149mm) of precipitation. Throughout the year, in Great Smoky Mountains National Park, Tennessee, there are 123 rainfall days, and 72.13" (1832mm) of precipitation is accumulated.Snowfall
In Great Smoky Mountains National Park, Tennessee, snow does not fall in June through September.Daylight
In Great Smoky Mountains National Park, the average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 7:06 am and sunset at 8:00 pm. On the last day of September, in Great Smoky Mountains National Park, sunrise is at 7:28 am and sunset at 7:18 pm EDT.
Sunshine
In September, the average sunshine is 7h.UV index
In September, the average daily maximum UV index in Great Smoky Mountains National Park is 8. A UV Index value of 8 to 10 symbolizes a very high health risk from exposure to the Sun's UV rays for the ordinary person.Note: A maximum high UV index of 8 in September translates into the following recommendations:
Always remain cautious. Unprotected skin and eyes are prone to swift harm. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Frequently asked questions
What is the average September temperature in Great Smoky Mountains National Park?
How much does it rain in Great Smoky Mountains National Park in September?
When it does not snow in Great Smoky Mountains National Park?
Does it snow in Great Smoky Mountains National Park in September?
What is the average length of the day in September in Great Smoky Mountains National Park?
What time are sunrise and sunset in September in Great Smoky Mountains National Park?
How long on average sun shines in September in Great Smoky Mountains National Park?
What is the UV index intensity in September in Great Smoky Mountains National Park?
Average temperature in September
Great Smoky Mountains National Park, TN
- Average high temperature in September: 65°F
The warmest month (with the highest average high temperature) is July (71°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in September: 50°F
The months with the highest average low temperature are July and August (55°F).
The coldest month (with the lowest average low temperature) is January (20°F).
Average rainfall in September
Great Smoky Mountains National Park, TN
- Average rainfall in September: 5.8"
The wettest month (with the highest rainfall) is July (7.6").
The driest month (with the least rainfall) is October (4.3").
Average rainfall days in September
Great Smoky Mountains National Park, TN
- Average rainfall days in September: 8 days
The month with the highest number of rainy days is July (14 days).
The months with the least rainy days are September, October and November (8 days).
Average snowfall in September
Great Smoky Mountains National Park, TN
- Average snowfall in September: 0"
The month with the highest snowfall is February (18.1").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Great Smoky Mountains National Park, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Great Smoky Mountains National Park, TN
- 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: 7h
The months with the most sunshine are May, June and July (Average sunshine: 9h).
The month with the least sunshine is December (Average sunshine: 4h).
Average UV index in September
Great Smoky Mountains National Park, TN
- Average UV index in September: 8
The 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).
Great Smoky Mountains National Park, Tennessee, USA
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