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 onset of September entails a subtle temperature shift, as the average high-temperature eases from a hot 87.8°F (31°C) in August to a warm 81.9°F (27.7°C). In Big Rock, in September, the average low-temperature is a refreshing 61.9°F (16.6°C).Heat index
For September, the heat index is computed to be a tropical 87.8°F (31°C). Persisting in activity during long-term exposure might induce weariness, with subsequent heat cramps.Consider that heat index readings are for situations in the shade and light wind. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Humidity
In Big Rock, the average relative humidity in September is 74%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.7 days and typically collects 1.89" (48mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in September in Big Rock, Tennessee, is 12h and 24min.On the first day of the month, sunrise is at 6:22 am and sunset at 7:18 pm. On the last day of September, in Big Rock, sunrise is at 6:46 am and sunset at 6:35 pm CDT.
Sunshine
The average sunshine in September is 8.9h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In September, the maximum UV index of 5 suggests this advice:
Exercise caution. Those with pale skin may experience burns in less than half an hour. The Sun's radiation is especially intense around midday; try to stay in shade during this period. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Big Rock?
What is the average humidity in September in Big Rock?
What is the driest month in Big Rock?
How much does it rain in Big Rock in September?
When it does not snow in Big Rock?
Does it snow in Big Rock in September?
How many hours of daylight does Big Rock have in September?
When is the sunrise / sunset in September in Big Rock?
How long on average sun shines in September in Big Rock?
What is the UV index intensity in September in Big Rock?
Average temperature in September
Big Rock, TN
- Average high temperature in September: 81.9°F
The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is January (43.3°F).
- Average low temperature in September: 61.9°F
The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (29.8°F).
Average pressure in September
Big Rock, 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 (29.96"Hg).
Average wind speed in September
Big Rock, TN
- Average wind speed in September: 5.5mph
The windiest months (with the highest average wind speed) are January, February and April (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in September
Big Rock, TN
- Average humidity in September: 74%
The months with the highest relative humidity are March and December (79%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Big Rock, TN
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is February (4.13").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in September
Big Rock, TN
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is November (10.2 days).
Average snowfall in September
Big Rock, TN
- Average snowfall in September: 0"
The month with the highest snowfall is March (1.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Big Rock, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.8 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
Big Rock, 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 5min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in September
Big Rock, TN
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in September
Big Rock, 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
Big Rock, TN
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 52).
The months with the least cloud cover are June and September (Cloud cover 30).
Average visibility in September
Big Rock, TN
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, September, October, November and December (6mi).
The months with the lowest visibility are May, July and August (5mi).
Big Rock, Tennessee, USA
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