December weather forecast
Watershaw, TN

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Weather in December

December, the first month of the winter in Watershaw, is still a chilly month, with an average temperature fluctuating between 35.4°F (1.9°C) and 49.1°F (9.5°C).

Temperature

With the onset of December, Watershaw's average high-temperature slightly adjusts, moderately receding from November's moderate 57°F (13.9°C) to a frosty 49.1°F (9.5°C). Throughout December nights, Watershaw experiences a consistent temperature average of 35.4°F (1.9°C).

Humidity

The most humid month is December, with an average relative humidity of 79%.

Rainfall

In Watershaw, during December, the rain falls for 14.2 days and regularly aggregates up to 3.86" (98mm) of precipitation. Throughout the year, there are 177.6 rainfall days, and 37.91" (963mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall. In Watershaw, Tennessee, in December, during 3.5 snowfall days, 0.83" (21mm) of snow is typically accumulated. In Watershaw, during the entire year, snow falls for 19 days and aggregates up to 5.59" (142mm) of snow.

Daylight

With an average of 9h and 48min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:28 am and sunset at 5:23 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 5:33 pm EST.

Sunshine

The average sunshine in December is 5.2h.

UV index

The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: An average UV index of 2 in December transforms into this advice:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Updated: Aug 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in December in Watershaw?

During December, Watershaw experiences an average high-temperature of 49.1°F (9.5°C) and a low-temperature of 35.4°F (1.9°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in September is evaluated at 86°F (30°C).

What is the most humid month in Watershaw?

With an average relative humidity of 79%, December is the most humid month.

What is the average humidity in December?

In December, the average relative humidity is 79%.

How many days does it rain in December in Watershaw?

In Watershaw, Tennessee, in December, it is raining for 14.2 days, with typically 3.86" (98mm) of accumulated precipitation.

How many days does it snow in December?

In December, it is snowing for 3.5 days. Throughout December, 0.83" (21mm) of snow is accumulated.

What is the month with the shortest days?

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

What is the average length of the day in December?

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

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 7:28 am and sunset at 5:23 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 5:33 pm EST.

How long on average sun shines in December?

The average sunshine duration in December is 5.2h.

What is the month with the lowest UV index?

The months with the lowest UV index are January, February and December, with an average maximum UV index of 2.

What is the UV index intensity in December?

In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to Sun's UV rays.
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
Watershaw, TN

Average temperature in December - Watershaw, TN
  • Average high temperature in December: 49.1°F

The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (44.8°F).

  • Average low temperature in December: 35.4°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).

Average pressure in December
Watershaw, TN

Average pressure in December - Watershaw, TN
  • Average pressure in December: 30.14"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).

Average wind speed in December
Watershaw, TN

Average wind speed in December - Watershaw, TN
  • Average wind speed in December: 5.2mph

The windiest month (with the highest average wind speed) is April (6mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).

Average humidity in December
Watershaw, TN

Average humidity in December - Watershaw, TN
  • Average humidity in December: 79%

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is August (72%).

Average rainfall in December
Watershaw, TN

Average rainfall in December - Watershaw, TN
  • Average rainfall in December: 3.86"

The wettest month (with the highest rainfall) is February (4.33").
The driest month (with the least rainfall) is September (1.97").

Average rainfall days in December
Watershaw, TN

Average rainfall days in December - Watershaw, TN
  • Average rainfall days in December: 14.2 days

The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is November (10.3 days).

Average snowfall in December
Watershaw, TN

Average snowfall in December - Watershaw, TN
  • Average snowfall in December: 0.83"

The month with the highest snowfall is February (1.93").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Watershaw, TN

Average snowfall days in December - Watershaw, TN
  • Average snowfall days in December: 3.5 days

The month with the highest number of snowfall days is January (5.5 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
Watershaw, TN

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

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 December: 5h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).

Average sunshine days in December
Watershaw, TN

Average sunshine days in December - Watershaw, TN
  • Average sunshine days in December: 14.5 days

The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is July (10.3 days).

Average UV index in December
Watershaw, TN

Average UV index in December - Watershaw, 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, February and December (UV index 2).

Average cloud cover in December
Watershaw, TN

Average cloud cover in December - Watershaw, TN
  • Average cloud cover in December: 47

The month with the most cloud cover is February (Cloud cover 52).
The months with the least cloud cover are June and August (Cloud cover 28).

Average visibility in December
Watershaw, TN

Average visibility in December - Watershaw, TN
  • Average visibility in December: 6mi

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

Watershaw, Tennessee, USA

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