Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The transition into September reveals an average high-temperature of a still moderately hot 80.2°F (26.8°C), mirroring a close resemblance to August. September presents a sharp fall from Hiara Heights's daytime highs to an average low-temperature of 56.3°F (13.5°C).Humidity
July through September and November, with an average relative humidity of 74%, are the least humid months in Hiara Heights.Rainfall
The month with the least rainfall is September, when the rain falls for 11.3 days and typically collects 0.98" (25mm) of precipitation.Snowfall
In Hiara Heights, snow does not fall in May through October.Daylight
The average length of the day in September is 12h and 24min.On the first day of September, sunrise is at 7:02 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 7:14 pm EDT.
Sunshine
In September, the average sunshine in Hiara Heights is 8.7h.UV index
In September, the average daily maximum UV index in Hiara Heights is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: The UV index of 5 during September leads to these advisories:
Exercise prevention - Precautions against solar damage are endorsed. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Hiara Heights in September?
What are the least humid months in Hiara Heights?
What is the average humidity in September in Hiara Heights?
What is the driest month in Hiara Heights?
How many days does it rain in September in Hiara Heights?
When it does not snow in Hiara Heights?
How many hours of daylight does Hiara Heights have in September?
When is the sunrise / sunset in September in Hiara Heights?
How many hours of sunshine does Hiara Heights have in September?
What is the UV index reading in September in Hiara Heights?
Average temperature in September
Hiara Heights, TN
- Average high temperature in September: 80.2°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (42.4°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (27.1°F).
Average pressure in September
Hiara Heights, TN
- Average pressure in September: 30.06"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).
Average wind speed in September
Hiara Heights, TN
- Average wind speed in September: 4.1mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in September
Hiara Heights, TN
- Average humidity in September: 74%
The month with the highest relative humidity is February (79%).
The months with the lowest relative humidity are July, August, September and November (74%).
Average rainfall in September
Hiara Heights, TN
- Average rainfall in September: 0.98"
The wettest month (with the highest rainfall) is February (3.03").
The driest month (with the least rainfall) is September (0.98").
Average rainfall days in September
Hiara Heights, TN
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is November (8 days).
Average snowfall in September
Hiara Heights, TN
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.57").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Hiara Heights, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.2 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
Hiara Heights, TN
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in September
Hiara Heights, TN
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is July (11.9 days).
Average UV index in September
Hiara Heights, TN
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Hiara Heights, TN
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Hiara Heights, TN
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Hiara Heights, Tennessee, USA
Weather forecast for your location
2. Allow the app to use your location