Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
With the onset of September, Altamont's average high-temperature slightly adjusts, moderately receding from August's moderately hot 84.7°F (29.3°C) to a still warm 79.2°F (26.2°C). Altamont, during September, witnesses an average low-temperature of 59.5°F (15.3°C).Humidity
In September, the average relative humidity in Altamont is 78%.Rainfall
In Altamont, during September, the rain falls for 15.1 days and regularly aggregates up to 2.87" (73mm) of precipitation. Throughout the year, in Altamont, there are 182.8 rainfall days, and 45.91" (1166mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall in Altamont.Daylight
In September, the average length of the day is 12h and 23min.On the first day of the month, sunrise is at 6:15 am and sunset at 7:09 pm. On the last day of September, sunrise is at 6:37 am and sunset at 6:27 pm CDT.
Sunshine
In Altamont, the average sunshine in September is 8.1h.UV index
The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.Note: A daily high UV index of 5 in September leads to these guidelines:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Frequently asked questions
What is the usual temperature for Altamont in September?
What is the average humidity in September in Altamont?
How many days does it rain in September in Altamont?
When it does not snow in Altamont?
Does it snow in Altamont in September?
How many hours of daylight does Altamont have in September?
What time are sunrise and sunset in September in Altamont?
How many hours of sunshine does Altamont have in September?
How high is the UV index in September in Altamont?
Average temperature in September
Altamont, TN
- Average high temperature in September: 79.2°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (44.1°F).
- Average low temperature in September: 59.5°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).
Average pressure in September
Altamont, 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 (29.98"Hg).
Average wind speed in September
Altamont, TN
- Average wind speed in September: 4.3mph
The windiest month (with the highest average wind speed) is February (7.1mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity in September
Altamont, TN
- Average humidity in September: 78%
The month with the highest relative humidity is December (82%).
The months with the lowest relative humidity are October and November (77%).
Average rainfall in September
Altamont, TN
- Average rainfall in September: 2.87"
The wettest month (with the highest rainfall) is July (4.92").
The driest month (with the least rainfall) is November (2.8").
Average rainfall days in September
Altamont, TN
- Average rainfall days in September: 15.1 days
The month with the highest number of rainy days is July (21.4 days).
The month with the least rainy days is November (10 days).
Average snowfall in September
Altamont, TN
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.6").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Altamont, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.1 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
Altamont, TN
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 8h and 1min
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 24min).
Average sunshine days in September
Altamont, TN
- Average sunshine days in September: 12.9 days
The month with the most sunshine days is October (18 days).
The month with the least sunshine days is July (7.1 days).
Average UV index in September
Altamont, 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
Altamont, TN
- Average cloud cover in September: 35
The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is June (Cloud cover 34).
Average visibility in September
Altamont, TN
- Average visibility in September: 5mi
The month with the highest visibility is November (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October and December (5mi).
Altamont, Tennessee, USA
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