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 is accompanied by a slight temperature decrease, with the average high-temperature shifting from a tropical 87.3°F (30.7°C) in August to a warm 80.8°F (27.1°C). Throughout September, the temperature in Robertsville, Tennessee, falls to an average low of 59.5°F (15.3°C).Heat index
The heat index in September is appraised at 84.2°F (29°C). Extended exposure and activity might lead to tiredness, potentially resulting in heat cramps.The metrics for the heat index are tailored for both shady environments and light winds. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', reflects the blend of air temperature and relative humidity to give a temperature impression. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Humidity
In Robertsville, the average relative humidity in September is 74%.Rainfall
September is the month with the least rainfall in Robertsville. Rain falls for 11.8 days and accumulates 1.85" (47mm) of precipitation.Snowfall
In Robertsville, 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 the month, sunrise is at 7:09 am and sunset at 8:04 pm. On the last day of September, in Robertsville, sunrise is at 7:31 am and sunset at 7:21 pm EDT.
Sunshine
In Robertsville, the average sunshine in September is 8.6h.UV index
In Robertsville, Tennessee, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index of 5 during September translates into these guidelines:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Frequently asked questions
What are the temperatures in Robertsville in September?
What is the average humidity in September in Robertsville?
What is the driest month in Robertsville?
How much does it rain in Robertsville in September?
When it does not snow in Robertsville?
What is the average length of the day in September in Robertsville?
When is the sunrise / sunset in September in Robertsville?
How long on average sun shines in September in Robertsville?
How high is the UV index in September in Robertsville?
Average temperature in September
Robertsville, TN
- Average high temperature in September: 80.8°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (44.4°F).
- Average low temperature in September: 59.5°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (29.3°F).
Average pressure in September
Robertsville, TN
- Average pressure in September: 30.04"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
Robertsville, TN
- Average wind speed in September: 3.9mph
The windiest month (with the highest average wind speed) is April (6mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in September
Robertsville, TN
- Average humidity in September: 74%
The months with the highest relative humidity are February and December (79%).
The month with the lowest relative humidity is August (73%).
Average rainfall in September
Robertsville, TN
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is February (3.98").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in September
Robertsville, TN
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is November (8.6 days).
Average snowfall in September
Robertsville, TN
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Robertsville, 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
Robertsville, 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 4min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in September
Robertsville, TN
- Average sunshine days in September: 17.1 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (12.2 days).
Average UV index in September
Robertsville, 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
Robertsville, TN
- Average cloud cover in September: 31
The month with the most cloud cover is February (Cloud cover 53).
The months with the least cloud cover are June and August (Cloud cover 29).
Average visibility in September
Robertsville, TN
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Robertsville, Tennessee, USA
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