September weather forecastPalmyra, TN
September
Weather in September
The first month of the autumn, September, is still a warm month in Palmyra, Tennessee, with an average temperature varying between 61.5°F (16.4°C) and 81°F (27.2°C).Temperature
The commencement of September indicates a gentle shift in the average high-temperature, receding from August's hot 86.5°F (30.3°C) to a warm 81°F (27.2°C). In September, Palmyra experiences a temperature dip to an average of 61.5°F (16.4°C) at night.Heat index
For September, the heat index is computed to be a tropical 86°F (30°C). Continuous exposure and activity could induce a sense of tiredness and subsequently, heat cramps.Records show heat index calculations are tailored for shaded regions and mild winds. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
Humidity
In September, the average relative humidity is 75%.Rainfall
September is the month with the least rainfall. Rain falls for 13.6 days and accumulates 1.93" (49mm) of precipitation.Snowfall
In Palmyra, snow does not fall in May through September.Daylight
The average length of the day in September in Palmyra is 12h and 24min.On the first day of the month, sunrise is at 6:21 am and sunset at 7:17 pm. On the last day of September, sunrise is at 6:44 am and sunset at 6:34 pm CDT.
Sunshine
The average sunshine in September is 8.8h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 5 during September translates into the following directions:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Palmyra, TN
- Average high temperature in September: 81°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (42.6°F).
- Average low temperature in September: 61.5°F
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (28.9°F).
Average pressure in September
Palmyra, 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
Palmyra, TN
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is February (8.7mph).
The calmest month (with the lowest average wind speed) is July (5.1mph).
Average humidity in September
Palmyra, TN
- Average humidity in September: 75%
The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Palmyra, TN
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is February (3.78").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in September
Palmyra, TN
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is November (10.3 days).
Average snowfall in September
Palmyra, TN
- Average snowfall in September: 0"
The month with the highest snowfall is December (1.02").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Palmyra, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4 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
Palmyra, TN
- Average daylight in September: 12h and 24min
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 48min
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 30min).
Average sunshine days in September
Palmyra, TN
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is July (10.4 days).
Average UV index in September
Palmyra, 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
Palmyra, TN
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility in September
Palmyra, TN
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
