September weather forecastHenderson, TN
September
Weather in September
September, the first month of the autumn in Henderson, is still a warm month, with an average temperature varying between 63.5°F (17.5°C) and 83.3°F (28.5°C).Temperature
Henderson records an average high-temperature of a warm 83.3°F (28.5°C) in September, maintaining a close correlation with August's 88.3°F (31.3°C). Henderson records an average nighttime low of 63.5°F (17.5°C) in September.Heat index
Throughout September, the heat index is appraised at a tropical 89.6°F (32°C). Persistently participating in activities during exposure may lead to fatigue and induce heat cramps.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
Humidity
The average relative humidity in September in Henderson, Tennessee, is 73%.Rainfall
The month with the least rainfall is September, when the rain falls for 13.2 days and typically collects 1.89" (48mm) of precipitation.Snowfall
In Henderson, snow does not fall in April through October.Daylight
In Henderson, the average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 6:27 am and sunset at 7:21 pm. On the last day of September, sunrise is at 6:49 am and sunset at 6:39 pm CDT.
Sunshine
The average sunshine in September in Henderson is 9.2h.UV index
In Henderson, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In September, the maximum UV index of 5 suggests these recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Henderson, TN
- Average high temperature in September: 83.3°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (46°F).
- Average low temperature in September: 63.5°F
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (32.4°F).
Average pressure in September
Henderson, TN
- Average pressure in September: 30.01"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
Henderson, TN
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is February (8.5mph).
The calmest month (with the lowest average wind speed) is July (4.9mph).
Average humidity in September
Henderson, TN
- Average humidity in September: 73%
The month with the highest relative humidity is March (80%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Henderson, TN
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is February (4.25").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in September
Henderson, TN
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is November (10 days).
Average snowfall in September
Henderson, TN
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.75").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Henderson, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.4 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Henderson, TN
- Average daylight in September: 12h and 24min
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: 9h and 12min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 42min).
Average sunshine days in September
Henderson, TN
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is October (19 days).
The months with the least sunshine days are March and July (12.3 days).
Average UV index in September
Henderson, TN
- Average UV index in September: 5
The month with the highest UV index is June (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Henderson, TN
- Average cloud cover in September: 29
The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in September
Henderson, TN
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
