September weather forecast
Morristown, TN

Weather in September

The first month of the autumn, September, is still a warm month in Morristown, Tennessee, with an average temperature varying between 79.9°F (26.6°C) and 57.9°F (14.4°C).

Temperature

In September, the average high-temperature marginally drops from a warm 85.5°F (29.7°C) in August to a still moderately hot 79.9°F (26.6°C). In Morristown, in September, the average low-temperature is 57.9°F (14.4°C).

Humidity

The average relative humidity in September is 75%.

Rainfall

September is the month with the least rainfall. Rain falls for 13.3 days and accumulates 1.73" (44mm) of precipitation.

Snowfall

May through September are months without snowfall in Morristown.

Daylight

In September, the average length of the day in Morristown is 12h and 24min.
On the first day of the month, sunrise is at 7:04 am and sunset at 8:01 pm. On the last day of September, sunrise is at 7:27 am and sunset at 7:18 pm EDT.

Sunshine

In Morristown, the average sunshine in September is 8.8h.

UV index

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In September, the average maximum UV index of 5 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Morristown?

In September, in Morristown, the average high-temperature is 79.9°F (26.6°C), and the average low-temperature is 57.9°F (14.4°C). The average heat index (a.k.a. 'real feel', 'feels like'), which combines air temperature and relative humidity, in August is appraised at 95°F (35°C).

What is the average humidity in September in Morristown?

In Morristown, Tennessee, the average relative humidity in September is 75%.

What is the driest month in Morristown?

September is the month with the least rainfall. Rain falls for 13.3 days and accumulates 1.73" (44mm) of precipitation.

How much does it rain in Morristown in September?

In Morristown, in September, it is raining for 13.3 days, with typically 1.73" (44mm) of accumulated precipitation.

When it does not snow in Morristown?

In Morristown, snow does not fall in May through September.

Does it snow in Morristown in September?

In Morristown, in September, it doesn't snow. In October, it regularly snows.

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

In September, the average day length in Morristown is 12h and 24min.

When is the sunrise / sunset in September in Morristown?

On the first day of September in Morristown, Tennessee, sunrise is at 7:04 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 7:18 pm EDT.

How long on average sun shines in September in Morristown?

In September, the average sunshine duration is 8.8h.

What is the UV index intensity in September in Morristown?

In September, the average daily maximum UV index in Morristown, Tennessee, is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Morristown, TN

Average temperature in September - Morristown, TN
  • Average high temperature in September: 79.9°F

The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (43.2°F).

  • Average low temperature in September: 57.9°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (28.2°F).

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Average pressure in September
Morristown, TN

Average pressure in September - Morristown, TN
  • Average pressure in September: 30.05"Hg

The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).

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Average wind speed in September
Morristown, TN

Average wind speed in September - Morristown, TN
  • Average wind speed in September: 3.9mph

The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).

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Average humidity in September
Morristown, TN

Average humidity in September - Morristown, TN
  • Average humidity in September: 75%

The months with the highest relative humidity are February and December (79%).
The month with the lowest relative humidity is August (73%).

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Average rainfall in September
Morristown, TN

Average rainfall in September - Morristown, TN
  • Average rainfall in September: 1.73"

The wettest month (with the highest rainfall) is February (3.66").
The driest month (with the least rainfall) is September (1.73").

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Average rainfall days in September
Morristown, TN

Average rainfall days in September - Morristown, TN
  • Average rainfall days in September: 13.3 days

The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is November (10.6 days).

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Average snowfall in September
Morristown, TN

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

The month with the highest snowfall is December (2.83").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Morristown, TN

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

The month with the highest number of snowfall days is January (8.3 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
Morristown, TN

Average daylight in September / Average sunshine in September - Morristown, TN
  • Average daylight in September: 12h and 24min

The month with the longest days is June (Average daylight: 14h and 35min).
The month with the shortest days is December (Average daylight: 9h and 44min).

  • Average sunshine in September: 8h and 48min

The months with the most sunshine are June and July (Average sunshine: 10h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).

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Average sunshine days in September
Morristown, TN

Average sunshine days in September - Morristown, TN
  • Average sunshine days in September: 14.8 days

The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is February (10.3 days).

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Average UV index in September
Morristown, TN

Average UV index in September - Morristown, 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).

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Average cloud cover in September
Morristown, TN

Average cloud cover in September - Morristown, TN
  • Average cloud cover in September: 29

The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are June and August (Cloud cover 27).

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Average visibility in September
Morristown, TN

Average visibility in September - Morristown, TN
  • Average visibility in September: 6mi

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

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