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 average high-temperature slightly decreases in September, shifting from a moderately hot 85.5°F (29.7°C) in August to a still warm 79.7°F (26.5°C). During September, the average low-temperature is a mild 59.2°F (15.1°C).Humidity
The average relative humidity in September is 77%.Rainfall
September is the month with the least rainfall in Highland Forest. Rain falls for 13.2 days and accumulates 2.32" (59mm) of precipitation.Snowfall
In Highland Forest, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 23min.On the first day of the month, sunrise is at 7:11 am and sunset at 8:05 pm. On the last day of September, in Highland Forest, sunrise is at 7:33 am and sunset at 7:23 pm EDT.
Sunshine
In Highland Forest, Tennessee, the average sunshine in September is 8.5h.UV index
The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: A daily maximum UV index of 5 in September translates into the following instructions:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Frequently asked questions
What are September temperatures in Highland Forest?
What is the average humidity in September in Highland Forest?
What is the driest month in Highland Forest?
How much does it rain in Highland Forest in September?
When it does not snow in Highland Forest?
What is the average length of the day in September in Highland Forest?
When are sunrise and sunset in September in Highland Forest?
How long on average sun shines in September in Highland Forest?
How high is the UV index in September in Highland Forest?
Average temperature in September
Highland Forest, TN
- Average high temperature in September: 79.7°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (43.7°F).
- Average low temperature in September: 59.2°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (29.1°F).
Average pressure in September
Highland Forest, TN
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Highland Forest, TN
- Average wind speed in September: 4mph
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
Highland Forest, TN
- Average humidity in September: 77%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is November (76%).
Average rainfall in September
Highland Forest, TN
- Average rainfall in September: 2.32"
The wettest month (with the highest rainfall) is July (4.29").
The driest month (with the least rainfall) is September (2.32").
Average rainfall days in September
Highland Forest, TN
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is November (10.7 days).
Average snowfall in September
Highland Forest, TN
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.18").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Highland Forest, TN
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (3.3 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
Highland Forest, 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 48min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The months with the least sunshine are January and December (Average sunshine: 4h and 54min).
Average sunshine days in September
Highland Forest, TN
- Average sunshine days in September: 14.3 days
The months with the most sunshine days are October and November (18.5 days).
The month with the least sunshine days is July (9.4 days).
Average UV index in September
Highland Forest, 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
Highland Forest, TN
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in September
Highland Forest, TN
- Average visibility in September: 5mi
The months with the highest visibility are April, June, October and November (6mi).
The months with the lowest visibility are January, February, March, May, July, August, September and December (5mi).
Highland Forest, Tennessee, USA
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