September weather forecastSpencers Mill, TN
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Spencers Mill, Tennessee, with an average temperature ranging between max 81.1°F (27.3°C) and min 61.7°F (16.5°C).Temperature
Spencers Mill experiences a moderate temperature shift at the start of September, with average high-temperatures adjusting a bit from a hot 86.7°F (30.4°C) in August to a warm 81.1°F (27.3°C). September nights are marked by an average temperature drop to an enjoyable 61.7°F (16.5°C).Heat index
For most parts of September, the heat index is calculated to be a tropical 86°F (30°C). Unrelenting activity during exposure could cause fatigue and potentially lead to heat cramps.The metrics for the heat index are tailored for both shady environments and light winds. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', shows a temperature sensation when both heat and moisture conditions are combined. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
Humidity
In September, the average relative humidity in Spencers Mill is 76%.Rainfall
September is the month with the least rainfall. Rain falls for 9.2 days and accumulates 0.47" (12mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Spencers Mill, the average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 6:21 am and sunset at 7:16 pm. On the last day of September, sunrise is at 6:43 am and sunset at 6:33 pm CDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
In Spencers Mill, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: In September, an average UV index of 5 transforms into the following instructions:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Spencers Mill, TN
- Average high temperature in September: 81.1°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: 61.7°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).
Average pressure in September
Spencers Mill, 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
Spencers Mill, TN
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is February (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in September
Spencers Mill, TN
- Average humidity in September: 76%
The months with the highest relative humidity are March and December (79%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Spencers Mill, TN
- Average rainfall in September: 0.47"
The wettest month (with the highest rainfall) is July (1.38").
The driest month (with the least rainfall) is September (0.47").
Average rainfall days in September
Spencers Mill, TN
- Average rainfall days in September: 9.2 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is November (6 days).
Average snowfall in September
Spencers Mill, TN
- Average snowfall in September: 0"
The months with the highest snowfall are January, February and December (0.2").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Spencers Mill, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3 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
Spencers Mill, 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 18min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in September
Spencers Mill, TN
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is July (11.9 days).
Average UV index in September
Spencers Mill, 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 and December (UV index 2).
Average cloud cover in September
Spencers Mill, TN
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in September
Spencers Mill, TN
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are May and July (5mi).
