December weather forecast
Robertsville, TN

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Weather in December

The first month of the winter, December, is still a chilly month in Robertsville, Tennessee, with an average temperature varying between 34.9°F (1.6°C) and 48.9°F (9.4°C).

Temperature

December's arrival subtly correlates with a reduction in the average high-temperature, down from a moderate 56.5°F (13.6°C) in November to a chilly 48.9°F (9.4°C). Robertsville experiences a mean temperature of 34.9°F (1.6°C) during December nights.

Humidity

The months with the highest humidity in Robertsville are February and December, with an average relative humidity of 79%.

Rainfall

In Robertsville, in December, during 12.7 rainfall days, 3.23" (82mm) of precipitation is typically accumulated. In Robertsville, during the entire year, the rain falls for 160.5 days and collects up to 33.11" (841mm) of precipitation.

Snowfall

Months with snowfall are January through April, November and December. In Robertsville, in December, during 1.9 snowfall days, 0.47" (12mm) of snow is typically accumulated. In Robertsville, Tennessee, during the entire year, snow falls for 11.9 days and aggregates up to 4.06" (103mm) of snow.

Daylight

December has the shortest days of the year in Robertsville, with an average of 9h and 48min of daylight.
On the first day of the month, sunrise is at 7:29 am and sunset at 5:22 pm. On the last day of December, sunrise is at 7:47 am and sunset at 5:33 pm EST.

Sunshine

In Robertsville, the average sunshine in December is 5.1h.

UV index

The months with the lowest UV index in Robertsville are January, February and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
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Frequently asked questions

What is the usual temperature for Robertsville in December?

The average high-temperature and low-temperature in Robertsville during December are 48.9°F (9.4°C) and 34.9°F (1.6°C) respectively. The average heat index (a.k.a. 'real feel', 'feels like'), which combines air temperature and relative humidity, in September is appraised at 84.2°F (29°C).

What is the most humid month in Robertsville?

The months with the highest humidity are February and December, with an average relative humidity of 79%.

What is the average humidity in December in Robertsville?

The average relative humidity in December in Robertsville is 79%.

How much does it rain in Robertsville in December?

In December, the rain falls for 12.7 days. Throughout December, 3.23" (82mm) of precipitation is accumulated.

How many days does it snow in December in Robertsville?

In Robertsville, during December, snow falls for 1.9 days and regularly aggregates up to 0.47" (12mm) of snow.

What is the month with the shortest days in Robertsville?

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

What is the average length of the day in December in Robertsville?

The average day length in December in Robertsville, Tennessee, is 9h and 46min.

When are sunrise and sunset in December in Robertsville?

On the first day of December in Robertsville, sunrise is at 7:29 am and sunset at 5:22 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 5:33 pm EST.

How long on average sun shines in December in Robertsville?

In December, the average sunshine duration in Robertsville, Tennessee, is 5.1h.

What are the months with the lowest UV index in Robertsville?

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

What is the UV index intensity in December in Robertsville?

In December, the average daily maximum UV index in Robertsville, Tennessee, is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability 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
Robertsville, TN

Average temperature in December - Robertsville, TN
  • Average high temperature in December: 48.9°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 (44.4°F).

  • Average low temperature in December: 34.9°F

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (29.3°F).

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Average pressure in December
Robertsville, TN

Average pressure in December - Robertsville, 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).

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Average wind speed in December
Robertsville, TN

Average wind speed in December - Robertsville, 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 (3.7mph).

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Average humidity in December
Robertsville, TN

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

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 December
Robertsville, TN

Average rainfall in December - Robertsville, TN
  • Average rainfall in December: 3.23"

The wettest month (with the highest rainfall) is February (3.98").
The driest month (with the least rainfall) is September (1.85").

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Average rainfall days in December
Robertsville, TN

Average rainfall days in December - Robertsville, TN
  • Average rainfall days in December: 12.7 days

The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is November (8.6 days).

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Average snowfall in December
Robertsville, TN

Average snowfall in December - Robertsville, TN
  • Average snowfall in December: 0.47"

The month with the highest snowfall is February (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Robertsville, TN

Average snowfall days in December - Robertsville, TN
  • Average snowfall days in December: 1.9 days

The month with the highest number of snowfall days is January (3.8 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
Robertsville, TN

Average daylight in December / Average sunshine in December - Robertsville, 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: 5h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).

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Average sunshine days in December
Robertsville, TN

Average sunshine days in December - Robertsville, TN
  • Average sunshine days in December: 16.4 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (12.2 days).

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Average UV index in December
Robertsville, TN

Average UV index in December - Robertsville, 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).

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Average cloud cover in December
Robertsville, TN

Average cloud cover in December - Robertsville, TN
  • Average cloud cover in December: 49

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

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Average visibility in December
Robertsville, TN

Average visibility in December - Robertsville, TN
  • Average visibility in December: 5mi

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

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Robertsville, Tennessee, USA

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