September weather forecastWestport, TN
September
Weather in September
The first month of the autumn, September, is still a warm month in Westport, Tennessee, with temperature in the range of an average high of 82.6°F (28.1°C) and an average low of 62.8°F (17.1°C).Temperature
During September, Westport records an average high-temperature of a warm 82.6°F (28.1°C), marking a slight divergence from August's 87.8°F (31°C). Throughout September, the average low-temperature in Westport, Tennessee, dips to a comfortable 62.8°F (17.1°C).Heat index
In September, the average heat index is computed to be a hot 87.8°F (31°C). Prolonged activity during exposure might result in a state of fatigue and cause heat cramps.Always consider that heat index estimations are for light winds and places in the shade. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly meaningful for babies and toddlers. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
Humidity
In September, the average relative humidity is 74%.Rainfall
September is the month with the least rainfall. Rain falls for 11.6 days and accumulates 0.71" (18mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September in Westport is 12h and 23min.On the first day of September in Westport, sunrise is at 6:25 am and sunset at 7:20 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 6:37 pm CDT.
Sunshine
The average sunshine in September is 9.1h.UV index
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Put precautions into practice - Protective measures against sun-induced damage are advised. Around midday, solar radiation is most harmful; hence, exposure should be limited. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Westport, TN
- Average high temperature in September: 82.6°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 (44.2°F).
- Average low temperature in September: 62.8°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (30.7°F).
Average pressure in September
Westport, TN
- Average pressure in September: 30.02"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
Westport, TN
- Average wind speed in September: 5.7mph
The windiest months (with the highest average wind speed) are February and April (8.5mph).
The calmest month (with the lowest average wind speed) is July (5mph).
Average humidity in September
Westport, 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
Westport, TN
- Average rainfall in September: 0.71"
The wettest month (with the highest rainfall) is July (1.85").
The driest month (with the least rainfall) is September (0.71").
Average rainfall days in September
Westport, TN
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is July (15.2 days).
The month with the least rainy days is November (7 days).
Average snowfall in September
Westport, TN
- Average snowfall in September: 0"
The month with the highest snowfall is March (0.43").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Westport, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.8 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
Westport, 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 48min).
- Average sunshine in September: 9h and 6min
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
Westport, TN
- Average sunshine days in September: 16.8 days
The months with the most sunshine days are October and November (20.4 days).
The month with the least sunshine days is July (12.3 days).
Average UV index in September
Westport, TN
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Westport, TN
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in September
Westport, TN
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
