December weather forecast
Mill Seat, TN

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Weather in December

The first month of the winter, December, is also a frosty month in Mill Seat, Tennessee, with an average temperature varying between 35.4°F (1.9°C) and 48.7°F (9.3°C).

Temperature

The arrival of December suggests a slight decrease in the average high-temperature, moving from a refreshing 57°F (13.9°C) in November to a frosty 48.7°F (9.3°C). Mill Seat, in the month of December, anticipates a consistent average low-temperature of 35.4°F (1.9°C).

Humidity

The months with the highest humidity in Mill Seat are March and December, with an average relative humidity of 79%.

Rainfall

In Mill Seat, during December, the rain falls for 8.1 days and regularly aggregates up to 0.71" (18mm) of precipitation. In Mill Seat, during the entire year, the rain falls for 118.2 days and collects up to 10.83" (275mm) of precipitation.

Snowfall

Months with snowfall in Mill Seat, Tennessee, are January through March, November and December. The months with the most snowfall in Mill Seat, Tennessee, are January, February and December, with an average 0.2" (5mm) of accumulated snow.

Daylight

December has the shortest days of the year in Mill Seat, with an average of 9h and 48min of daylight.
On the first day of December, sunrise is at 6:41 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 4:45 pm CST.

Sunshine

In December, the average sunshine in Mill Seat, Tennessee, is 4.6h.

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: During December, 2 as the daily maximum UV index converts into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average December temperature in Mill Seat?

In Mill Seat, in December, the average high-temperature is 48.7°F (9.3°C), and the average low-temperature is 35.4°F (1.9°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in September is calculated to be 86°F (30°C).

What is the most humid month in Mill Seat?

The months with the highest humidity in Mill Seat are March and December, with an average relative humidity of 79%.

What is the average humidity in December in Mill Seat?

In Mill Seat, Tennessee, the average relative humidity in December is 79%.

How much does it rain in Mill Seat in December?

In Mill Seat, in December, it is raining for 8.1 days, with typically 0.71" (18mm) of accumulated precipitation.

What is the snowiest month in Mill Seat?

The months with the most snowfall in Mill Seat, Tennessee, are January, February and December, with an average 0.2" (5mm) of accumulated snow.

How many days does it snow in December in Mill Seat?

In Mill Seat, Tennessee, in December, during 1.6 snowfall days, 0.2" (5mm) of snow is typically accumulated.

What is the month with the shortest days in Mill Seat?

December has the shortest days of the year, with an average of 9h and 48min of daylight.

How many hours of daylight does Mill Seat have in December?

The average day length in December is 9h and 47min.

When is the sunrise / sunset in December in Mill Seat?

On the first day of December in Mill Seat, sunrise is at 6:41 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 4:45 pm CST.

How long on average sun shines in December in Mill Seat?

The average sunshine duration in December in Mill Seat is 4.6h.

What are the months with the lowest UV index in Mill Seat?

The months with the lowest UV index in Mill Seat, Tennessee, are January and December, with an average maximum UV index of 2.

What is the UV index reading in December in Mill Seat?

The average daily maximum UV index in December in Mill Seat is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Mill Seat, TN

Average temperature in December - Mill Seat, TN
  • Average high temperature in December: 48.7°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 December: 35.4°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 December
Mill Seat, TN

Average pressure in December - Mill Seat, TN
  • Average pressure in December: 30.15"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 December
Mill Seat, TN

Average wind speed in December - Mill Seat, TN
  • Average wind speed in December: 7.7mph

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 December
Mill Seat, TN

Average humidity in December - Mill Seat, TN
  • Average humidity in December: 79%

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 December
Mill Seat, TN

Average rainfall in December - Mill Seat, TN
  • Average rainfall in December: 0.71"

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 December
Mill Seat, TN

Average rainfall days in December - Mill Seat, TN
  • Average rainfall days in December: 8.1 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 December
Mill Seat, TN

Average snowfall in December - Mill Seat, TN
  • Average snowfall in December: 0.2"

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 December
Mill Seat, TN

Average snowfall days in December - Mill Seat, TN
  • Average snowfall days in December: 1.6 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 December /
Average sunshine in December
Mill Seat, TN

Average daylight in December / Average sunshine in December - Mill Seat, TN
  • Average daylight in December: 9h and 5min

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 December: 4h and 4min

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 December
Mill Seat, TN

Average sunshine days in December - Mill Seat, TN
  • Average sunshine days in December: 20.6 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 December
Mill Seat, TN

Average UV index in December - Mill Seat, TN
  • Average UV index in December: 2

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 December
Mill Seat, TN

Average cloud cover in December - Mill Seat, TN
  • Average cloud cover in December: 52

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 December
Mill Seat, TN

Average visibility in December - Mill Seat, TN
  • Average visibility in December: 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).

Mill Seat, Tennessee, USA

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