December weather forecast
River Rest, TN

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Weather in December

The first month of the winter, December, is also a frosty month in River Rest, Tennessee, with an average temperature varying between 36°F (2.2°C) and 49.1°F (9.5°C).

Temperature

With the onset of December, River Rest experiences a modest temperature adjustment, with the average high-temperature gently receding from a moderate 57.4°F (14.1°C) in November to a chilly 49.1°F (9.5°C). During the month of December, River Rest anticipates a mean low-temperature of 36°F (2.2°C).

Humidity

December is the most humid month in River Rest, with an average relative humidity of 79%.

Rainfall

In River Rest, in December, it is raining for 12.7 days, with typically 3.11" (79mm) of accumulated precipitation. In River Rest, during the entire year, the rain falls for 176.6 days and collects up to 38.94" (989mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall in River Rest. In River Rest, in December, during 2.2 snowfall days, 0.47" (12mm) of snow is typically accumulated. In River Rest, during the entire year, snow falls for 11.4 days and aggregates up to 3.35" (85mm) of snow.

Daylight

The month with the shortest days in River Rest, Tennessee, is December, with an average of 9h and 48min of daylight.
On the first day of December in River Rest, sunrise is at 6:40 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 4:43 pm CST.

Sunshine

In December, the average sunshine in River Rest is 4.7h.

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the average person.
Note: A maximum daily UV index of 2 during December morphs into the following directions:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
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Frequently asked questions

What is the temperature in December in River Rest?

In December, in River Rest, the average high-temperature is 49.1°F (9.5°C), and the average low-temperature is 36°F (2.2°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), 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 River Rest?

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

What is the average humidity in December in River Rest?

The average relative humidity in December in River Rest is 79%.

How many days does it rain in December in River Rest?

In December, in River Rest, the rain falls for 12.7 days. Throughout December, 3.11" (79mm) of precipitation is accumulated.

How many days does it snow in December in River Rest?

In River Rest, Tennessee, during December, snow falls for 2.2 days and regularly aggregates up to 0.47" (12mm) of snow.

What is the month with the shortest days in River Rest?

With an average of 9h and 48min of daylight, December has the shortest days of the year in River Rest, Tennessee.

What is the average length of the day in December in River Rest?

In River Rest, Tennessee, the average day length in December is 9h and 46min.

What time are sunrise and sunset in December in River Rest?

In December, on the first day of the month, sunrise is at 6:40 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 4:43 pm CST.

How long on average sun shines in December in River Rest?

In River Rest, Tennessee, the average sunshine duration in December is 4.7h.

What are the months with the lowest UV index in River Rest?

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

What is the UV index intensity in December in River Rest?

In River Rest, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health risk from unsafe 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
River Rest, TN

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

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (45.1°F).

  • Average low temperature in December: 36°F

The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (30.9°F).

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Average pressure in December
River Rest, TN

Average pressure in December - River Rest, 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).

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Average wind speed in December
River Rest, TN

Average wind speed in December - River Rest, TN
  • Average wind speed in December: 7.6mph

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 (4.6mph).

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Average humidity in December
River Rest, TN

Average humidity in December - River Rest, TN
  • Average humidity in December: 79%

The month with the highest relative humidity is December (79%).
The months with the lowest relative humidity are October and November (74%).

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Average rainfall in December
River Rest, TN

Average rainfall in December - River Rest, TN
  • Average rainfall in December: 3.11"

The wettest month (with the highest rainfall) is July (4.37").
The driest months (with the least rainfall) are September and November (2.36").

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Average rainfall days in December
River Rest, TN

Average rainfall days in December - River Rest, TN
  • Average rainfall days in December: 12.7 days

The month with the highest number of rainy days is July (20.3 days).
The month with the least rainy days is November (10 days).

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Average snowfall in December
River Rest, TN

Average snowfall in December - River Rest, TN
  • Average snowfall in December: 0.47"

The month with the highest snowfall is February (1.22").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
River Rest, TN

Average snowfall days in December - River Rest, TN
  • Average snowfall days in December: 2.2 days

The month with the highest number of snowfall days is February (3.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
River Rest, TN

Average daylight in December / Average sunshine in December - River Rest, 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 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in December
River Rest, TN

Average sunshine days in December - River Rest, TN
  • Average sunshine days in December: 15.2 days

The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is July (9.2 days).

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Average UV index in December
River Rest, TN

Average UV index in December - River Rest, 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).

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Average cloud cover in December
River Rest, TN

Average cloud cover in December - River Rest, TN
  • Average cloud cover in December: 51

The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 29).

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Average visibility in December
River Rest, TN

Average visibility in December - River Rest, TN
  • Average visibility in December: 6mi

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

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River Rest, Tennessee, USA

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