September weather forecastBellevue, TN
September
Weather in September
The first month of the autumn, September, is still a warm month in Bellevue, Tennessee, with temperature in the range of an average low of 62.2°F (16.8°C) and an average high of 81.5°F (27.5°C).Temperature
In September, the average high-temperature marginally decreases from a tropical 87.4°F (30.8°C) in August to a warm 81.5°F (27.5°C). Bellevue experiences an average low-temperature of 62.2°F (16.8°C) in the month of September.Heat index
The heat index value for September is estimated at a hot 86°F (30°C). If one remains active during constant exposure, it might cause exhaustion and heat cramps.Heat index guidelines indicate values are for light wind scenarios and shaded regions. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', binds temperature metrics with humidity values to give a sense of the actual warmth. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
Humidity
In Bellevue, Tennessee, the average relative humidity in September is 74%.Rainfall
In Bellevue, Tennessee, in September, it is raining for 13.6 days, with typically 2.09" (53mm) of accumulated precipitation. Throughout the year, there are 166.2 rainfall days, and 33.86" (860mm) of precipitation is accumulated.Snowfall
In Bellevue, snow does not fall in May through October.Daylight
In Bellevue, Tennessee, the average length of the day in September is 12h and 23min.On the first day of September in Bellevue, sunrise is at 6:20 am and sunset at 7:15 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 6:32 pm CDT.
Sunshine
In Bellevue, the average sunshine in September is 8.5h.UV index
The average daily maximum UV index in September in Bellevue is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the maximum UV index of 5 translates into these guidelines:
Heed the precautions - It is counselled to guard against solar damage. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bellevue, TN
- Average high temperature in September: 81.5°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (45°F).
- Average low temperature in September: 62.2°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 (30.6°F).
Average pressure in September
Bellevue, 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 (29.97"Hg).
Average wind speed in September
Bellevue, TN
- Average wind speed in September: 4.9mph
The windiest month (with the highest average wind speed) is February (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in September
Bellevue, TN
- Average humidity in September: 74%
The month with the highest relative humidity is December (78%).
The months with the lowest relative humidity are June and October (73%).
Average rainfall in September
Bellevue, TN
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is July (3.94").
The driest month (with the least rainfall) is November (1.81").
Average rainfall days in September
Bellevue, TN
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is November (9.3 days).
Average snowfall in September
Bellevue, TN
- Average snowfall in September: 0"
The month with the highest snowfall is March (0.87").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Bellevue, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.2 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
Bellevue, 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: 8h and 30min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in September
Bellevue, TN
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is July (10.3 days).
Average UV index in September
Bellevue, 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
Bellevue, TN
- Average cloud cover in September: 31
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility in September
Bellevue, 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).
