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 beginning of September subtly marks a decrease in the average high-temperature, transitioning from a tropical 87.1°F (30.6°C) in August to a warm 81.3°F (27.4°C). An average nighttime temperature of 60.1°F (15.6°C) is recorded during September.Heat index
September's average heat index is appraised at a tropical 86°F (30°C). Continuous exposure and activity could induce a sense of tiredness and subsequently, heat cramps.Heat index values are typically calculated for conditions of shade and a light breeze. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', evaluates the perceived heat by adding the effect of moisture in the air. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
Humidity
The average relative humidity in September in Crestwood Hills is 74%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.6 days and typically collects 1.97" (50mm) of precipitation.Snowfall
In Crestwood Hills, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 7:08 am and sunset at 8:03 pm. On the last day of September, sunrise is at 7:31 am and sunset at 7:20 pm EDT.
Sunshine
The average sunshine in September is 8.7h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum high daily UV index of 5 during September translates into the following directions:
Adopt protective measures - Suggestions to resist sunburn are offered. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
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?
What is the driest month?
How many days does it rain in September?
When it does not snow in Crestwood Hills?
Does it snow in September?
What is the average length of the day in September in Crestwood Hills?
When is the sunrise / sunset in September?
How long on average sun shines in September in Crestwood Hills?
What is the UV index intensity in September?
Average temperature in September
Crestwood Hills, TN
- Average high temperature in September: 81.3°F
The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (44.8°F).
- Average low temperature in September: 60.1°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).
Average pressure in September
Crestwood Hills, 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
Crestwood Hills, TN
- Average wind speed in September: 3.8mph
The windiest month (with the highest average wind speed) is April (6mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).
Average humidity in September
Crestwood Hills, TN
- Average humidity in September: 74%
The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is August (72%).
Average rainfall in September
Crestwood Hills, TN
- Average rainfall in September: 1.97"
The wettest month (with the highest rainfall) is February (4.33").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in September
Crestwood Hills, TN
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is November (10.3 days).
Average snowfall in September
Crestwood Hills, TN
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.93").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Crestwood Hills, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.5 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
Crestwood Hills, 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 42min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in September
Crestwood Hills, TN
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is July (10.3 days).
Average UV index in September
Crestwood Hills, 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
Crestwood Hills, 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 August (Cloud cover 28).
Average visibility in September
Crestwood Hills, TN
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and March (5mi).
Crestwood Hills, Tennessee, USA
Weather forecast for your location
2. Allow the app to use your location