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 start of September marks an average high-temperature of a still moderately hot 79.7°F (26.5°C), hardly distinguishable from the conditions in August. September is noted for a mean low-temperature of 59.9°F (15.5°C).Humidity
In Viola, the average relative humidity in September is 77%.Rainfall
In September, the rain falls for 14.5 days. Throughout September, 1.89" (48mm) of precipitation is accumulated. In Viola, during the entire year, the rain falls for 177.3 days and collects up to 31.02" (788mm) of precipitation.Snowfall
In Viola, Tennessee, snow does not fall in May through October.Daylight
The average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 6:16 am and sunset at 7:10 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 6:28 pm CDT.
Sunshine
The average sunshine in September is 8.2h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: In September, the maximum UV index of 5 suggests this advice:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Viola have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Viola have in September?
What is the UV index reading in September?
Average temperature in September
Viola, TN
- Average high temperature in September: 79.7°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (44.2°F).
- Average low temperature in September: 59.9°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (29.8°F).
Average pressure in September
Viola, TN
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Viola, TN
- Average wind speed in September: 4.5mph
The windiest month (with the highest average wind speed) is February (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in September
Viola, TN
- Average humidity in September: 77%
The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are October and November (76%).
Average rainfall in September
Viola, TN
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is July (3.82").
The driest month (with the least rainfall) is November (1.65").
Average rainfall days in September
Viola, TN
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is July (20.9 days).
The month with the least rainy days is November (9.3 days).
Average snowfall in September
Viola, TN
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.51").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Viola, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Viola, 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: 8h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in September
Viola, TN
- Average sunshine days in September: 13.3 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is July (8.4 days).
Average UV index in September
Viola, 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 and December (UV index 2).
Average cloud cover in September
Viola, TN
- Average cloud cover in September: 33
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in September
Viola, TN
- Average visibility in September: 5mi
The months with the highest visibility are February, April, June, October and November (6mi).
The months with the lowest visibility are January, March, May, July, August, September and December (5mi).
Viola, Tennessee, USA
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