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United StatesThe weather in September in Great Smoky Mountains National Park
It's warm in September in Great Smoky Mountains National Park with an average temperature of 28°C. Temperatures this month range from a low of 26°C to a high of 30°C. At night, you can expect temperatures between 14°C and 19°C.
Looking for great weather? September is a good time to be in Great Smoky Mountains National Park. The temperatures are nice, and there’s not too much rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Great Smoky Mountains National Park, Tennessee. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 34°C in 2016, Great Smoky Mountains National Park reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 16°C in 2017. The extreme nighttime temperatures ranged from a lowest recorded value of 2°C to a highest value of 23°C.
Rainfall amount
In September, there is an average of 51 mm of precipitation, spread over 9 days. The wind speed is around 3 Bft, mostly coming from the Southwest.
Daily weather in September for Great Smoky Mountains National Park
Click on any day in September to get detailed info about the usual weather on that day in Great Smoky Mountains National Park. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Great Smoky Mountains National Park | New York | |
|---|---|---|
| Average temperature | 28°C | 27°C |
| Max. temperature | 30°C | 31°C |
| Min. temperature | 14°C | -5°C |
| Total precipitation | 51 mm | 57 mm |
| Rainy days | 9 days | 9 days |
Start of September
The month of September starts in Great Smoky Mountains National Park with hot temps, averaging around 30°C during the day and nights around 18°C.
Mid September
By mid-September, daytime temps drop to around 28°C, with nights around 17°C. Not much precipitation expected during this period. It’s mostly dry and sunny.
End of September
By the end of September, the average daytime temperature in Great Smoky Mountains National Park is around 27°C, while nighttime temps are about 15°C. A shower might pop up, but overall, the weather will be dry and sunny.
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UV index
The UV index is a maximum of 6 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Temperature charts
These charts show the average temperatures in September in Great Smoky Mountains National Park, Tennessee. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Great Smoky Mountains National Park
Temperature in September in Great Smoky Mountains National Park over the years
Precipitation charts
These charts show the average amount of precipitation in September in Great Smoky Mountains National Park, Tennessee. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Great Smoky Mountains National Park
Total precipitation in September in Great Smoky Mountains National Park over the years
Daily UV index in September in Great Smoky Mountains National Park
This chart shows the average daily UV index in September in Great Smoky Mountains National Park, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in September in Great Smoky Mountains National Park
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Average weather in Great Smoky Mountains National Park by month
Click on a month below to see detailed weather info for Great Smoky Mountains National Park. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.