September weather forecastNewbern, TN
September
Weather in September
Come September, Newbern begins to whisper a plaintive farewell to the heat, as a gentle yet perceptible cooling effect slowly sets in. While the heat still lingers, average temperatures begin their gradual descent, falling to around 81.9°F (27.7°C). The month paves the transition from summer to fall, with the stand-out feature being the reduction of rainfall to approximately 1.65" (42mm). The days are marked by a transition, wherein the early September days often mirror late summer and the month's end hints at autumn's arrival. This period of changing seasons offers a delightful variety in the city's weather spectrum.Temperature
Newbern's average high-temperature in September is a moderately hot 81.9°F (27.7°C), indicating a subtle variation from August. The average low-temperature during September nights is a comfortable 63.3°F (17.4°C).Heat index
Throughout September, the heat index is estimated at a tropical 86°F (30°C). Continuous activity in exposure could lead to a feeling of fatigue and heat cramps.Records show heat index calculations are tailored for shaded regions and mild winds. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
Humidity
In September, the average relative humidity is 73%.Rainfall
September is the month with the least rainfall in Newbern. Rain falls for 12 days and accumulates 1.65" (42mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 6:29 am and sunset at 7:24 pm. On the last day of September, in Newbern, Tennessee, sunrise is at 6:51 am and sunset at 6:41 pm CDT.
Sunshine
In Newbern, Tennessee, the average sunshine in September is 9.6h.UV index
In September, the average daily maximum UV index in Newbern is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the average maximum UV index of 5 translates into the following recommendations:
Take precautions - Protection against sun damage is advised. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Newbern, TN
- Average high temperature in September: 81.9°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 (44.2°F).
- Average low temperature in September: 63.3°F
The month with the highest average low temperature is July (70.5°F).
The coldest month (with the lowest average low temperature) is January (31.1°F).
Average pressure in September
Newbern, 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 (29.95"Hg).
Average wind speed in September
Newbern, TN
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is February (9.6mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).
Average humidity in September
Newbern, TN
- Average humidity in September: 73%
The month with the highest relative humidity is March (79%).
The month with the lowest relative humidity is October (69%).
Average rainfall in September
Newbern, TN
- Average rainfall in September: 1.65"
The wettest months (with the highest rainfall) are February and April (4.29").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days in September
Newbern, TN
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is November (10.4 days).
Average snowfall in September
Newbern, TN
- Average snowfall in September: 0"
The month with the highest snowfall is March (1.26").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Newbern, TN
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (2.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Newbern, 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 36min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Newbern, TN
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is July (12.7 days).
Average UV index in September
Newbern, TN
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are February and December (UV index 2).
Average cloud cover in September
Newbern, TN
- Average cloud cover in September: 27
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 25).
Average visibility in September
Newbern, 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).





