September weather forecast and climate
Crossville, TN

The first month of the autumn, September, is still a warm month in Crossville, Tennessee, with average temperature varying between 77.9°F (25.5°C) and 58.3°F (14.6°C).

Temperature

In Crossville, the average high-temperature marginally drops, from 83.5°F (28.6°C) in August, to a still moderately hot 77.9°F (25.5°C). The average low-temperature, in Crossville, is 58.3°F (14.6°C).

Humidity

The average relative humidity in September is 79%.

Rainfall

In Crossville, Tennessee, it is raining for 16.2 days, with typically 3.43" (87mm) of accumulated precipitation. In Crossville, during the entire year, the rain falls for 198.6 days and collects up to 51.73" (1314mm) of precipitation.

Snowfall

May through October are months without snowfall in Crossville.

Daylight

The average length of the day in September is 12.4h.

Sunshine

In Crossville, the average sunshine is 7.8h.

UV index

In September, the average daily maximum UV index in Crossville is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to the UV radiation for the ordinary person.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in September in Crossville?

In Crossville, in September, the average high-temperature is 77.9°F (25.5°C), and the average low-temperature is 58.3°F (14.6°C).

What is the average humidity in September in Crossville?

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

How many days does it rain in September in Crossville?

In Crossville, Tennessee, in September, during 16.2 rainfall days, 3.43" (87mm) of precipitation is typically accumulated.

When it does not snow in Crossville?

May through October are months without snowfall in Crossville, Tennessee.

How many hours of daylight does Crossville have in September?

In Crossville, Tennessee, the average length of the day in September is 12.4h.

How many hours of sunshine does Crossville have in September?

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

What is the UV index reading in September in Crossville?

The average daily maximum UV index in September in Crossville, Tennessee, is 4. A UV Index of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV rays.
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).

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

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

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).

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

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

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").

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).

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

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

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).
Months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in September / Average sunshine in September - Crossville, TN
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.6h).
The month with the shortest days is December (Average daylight: 9.8h).

  • Average sunshine in September: 7.8h

The month with the most sunshine is June (Average sunshine: 10h).
The month with the least sunshine is February (Average sunshine: 4.1h).

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).
Months with the least sunshine days are June and July (7.8 days).

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

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February and December (UV index 2).

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).

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

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