September weather forecast
Crossville, TN

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Weather in September

Coming into September, Crossville experiences a drop in temperatures signifying the onset of fall. The weather becomes slightly cooler, providing respite from the heat of August. Average high and low temperatures stay at 77.9°F (25.5°C) and 58.3°F (14.6°C) respectively, maintaining moderately warm days and cold nights. The month is characterized by colorful fall foliage, thus providing numerous opportunities for nature walks and photo shoots. September, with its favorable weather, is undoubtedly a refreshing month to be in Crossville.

Temperature

September ushers in a minute temperature change, with average high-temperatures reducing from August's warm 83.5°F (28.6°C) to a still moderately hot 77.9°F (25.5°C). The average low-temperature of 58.3°F (14.6°C) is witnessed in Crossville, Tennessee, during September.

Humidity

The average relative humidity in September in Crossville is 79%.

Rainfall

In September, in Crossville, Tennessee, the rain falls for 16.2 days. Throughout September, 3.43" (87mm) of precipitation is accumulated. Throughout the year, in Crossville, Tennessee, there are 198.6 rainfall days, and 51.73" (1314mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in September is 12h and 23min.
On the first day of September, sunrise is at 6:12 am and sunset at 7:07 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 6:24 pm CDT.

Sunshine

In September, the average sunshine in Crossville, Tennessee, is 7.8h.

UV index

The average daily maximum UV index in September in Crossville is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: In September, the maximum UV index of 4 suggests these recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
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Frequently asked questions

What is the usual temperature for Crossville in September?

In Crossville, 77.9°F (25.5°C) is the average high-temperature and 58.3°F (14.6°C) is the average low-temperature during September. In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, is calculated to be 91.4°F (33°C).

What is the average humidity in September in Crossville?

In Crossville, Tennessee, the average relative humidity in September is 79%.

How much does it rain in Crossville in September?

In Crossville, Tennessee, in September, it is raining for 16.2 days, with typically 3.43" (87mm) of accumulated precipitation.

When it does not snow in Crossville?

In Crossville, Tennessee, snow does not fall in May through October.

What is the average length of the day in September in Crossville?

In September, the average day length is 12h and 23min.

When is the sunrise / sunset in September in Crossville?

On the first day of September, sunrise is at 6:12 am and sunset at 7:07 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 6:24 pm CDT.

How many hours of sunshine does Crossville have in September?

The average sunshine duration in September is 7.8h.

How high is the UV index in September in Crossville?

The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Crossville, TN

Average temperature in September - Crossville, TN
  • Average high temperature in September: 77.9°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (42.4°F).

  • Average low temperature in September: 58.3°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (28°F).

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Average pressure in September
Crossville, TN

Average pressure in September - Crossville, TN
  • Average pressure in September: 30.03"Hg

The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

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Average wind speed in September
Crossville, TN

Average wind speed in September - Crossville, TN
  • Average wind speed in September: 4.4mph

The windiest month (with the highest average wind speed) is February (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.2mph).

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Average humidity in September
Crossville, TN

Average humidity in September - Crossville, TN
  • Average humidity in September: 79%

The months with the highest relative humidity are February, March and December (81%).
The month with the lowest relative humidity is November (77%).

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Average rainfall in September
Crossville, TN

Average rainfall in September - Crossville, TN
  • Average rainfall in September: 3.43"

The wettest month (with the highest rainfall) is July (5.51").
The driest month (with the least rainfall) is November (3.15").

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Average rainfall days in September
Crossville, TN

Average rainfall days in September - Crossville, TN
  • Average rainfall days in September: 16.2 days

The month with the highest number of rainy days is July (21.8 days).
The month with the least rainy days is November (11.2 days).

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Average snowfall in September
Crossville, TN

Average snowfall in September - Crossville, TN
  • Average snowfall in September: 0"

The month with the highest snowfall is February (2.91").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Crossville, TN

Average snowfall days in September - Crossville, TN
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Crossville, TN

Average daylight in September / Average sunshine in September - Crossville, TN
  • Average daylight in September: 12h and 2min

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: 7h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).

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Average sunshine days in September
Crossville, TN

Average sunshine days in September - Crossville, TN
  • Average sunshine days in September: 11.6 days

The month with the most sunshine days is October (16.2 days).
The months with the least sunshine days are June and July (7.8 days).

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Average UV index in September
Crossville, TN

Average UV index in September - Crossville, TN
  • Average UV index in September: 4

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).

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Average cloud cover in September
Crossville, TN

Average cloud cover in September - Crossville, TN
  • Average cloud cover in September: 37

The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is June (Cloud cover 35).

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Average visibility in September
Crossville, TN

Average visibility in September - Crossville, TN
  • Average visibility in September: 5mi

The months with the highest visibility are June and November (6mi).
The months with the lowest visibility are January, February, March, April, May, July, August, September, October and December (5mi).

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Crossville, Tennessee, USA

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