December weather forecast
Franklin, TN

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Weather in December

Closing the year on a cold note, December introduces Franklin to the full swing of winter. December’s cold intensifies reaching a daily low average of 36°F (2.2°C), the coldest month following January. The arrival of snow adds to the festive ambience, despite comparatively minor snowfall. The city lights gleaming against the darker nights and the frosty mornings contribute to December’s winter wonderland vibe. As the year winds down, winds pick up speed, bringing a nippy end to the year.

Temperature

Transition into December subtly marks a drop in the average high-temperature, moderately moving from a mild 57.4°F (14.1°C) in November to a chilly 49.1°F (9.5°C). In Franklin, December nights witness a steady temperature drop to an icy 36°F (2.2°C).

Humidity

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

Rainfall

In Franklin, during December, the rain falls for 12.7 days and regularly aggregates up to 3.11" (79mm) of precipitation. Throughout the year, in Franklin, there are 176.6 rainfall days, and 38.94" (989mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall. In December, it is snowing for 2.2 days. Throughout December, 0.47" (12mm) of snow is accumulated. In Franklin, during the entire year, snow falls for 11.4 days and aggregates up to 3.35" (85mm) 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 in Franklin, sunrise is at 6:39 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 4:43 pm CST.

Sunshine

In December, the average sunshine 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 estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.
Note: A maximum daily UV index of 2 during December morphs into the following directions:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Updated: Jul 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average December temperature?

In Franklin, 49.1°F (9.5°C) is the average high-temperature and 36°F (2.2°C) is the average low-temperature during December. In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, is calculated to be 86°F (30°C).

What is the most humid month?

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

What is the average humidity in December?

The average relative humidity in December is 79%.

How many days does it rain in December in Franklin?

In Franklin, in December, it is raining for 12.7 days, with typically 3.11" (79mm) of accumulated precipitation.

How much does it snow in December?

In Franklin, in December, during 2.2 snowfall days, 0.47" (12mm) of snow is typically accumulated.

What is the month with the shortest days?

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

What is the average length of the day in December?

In December, the average day length is 9h and 46min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 6:39 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 4:43 pm CST.

How many hours of sunshine does Franklin have in December?

In December, the average sunshine duration is 4.7h.

What is the month with the lowest UV index?

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

How high is the UV index in December?

The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to 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
Franklin, TN

Average temperature in December - Franklin, 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).

Average pressure in December
Franklin, TN

Average pressure in December - Franklin, 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
Franklin, TN

Average wind speed in December - Franklin, 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).

Average humidity in December
Franklin, TN

Average humidity in December - Franklin, 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%).

Average rainfall in December
Franklin, TN

Average rainfall in December - Franklin, 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").

Average rainfall days in December
Franklin, TN

Average rainfall days in December - Franklin, 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).

Average snowfall in December
Franklin, TN

Average snowfall in December - Franklin, 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").

Average snowfall days in December
Franklin, TN

Average snowfall days in December - Franklin, 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).

Average daylight in December /
Average sunshine in December
Franklin, TN

Average daylight in December / Average sunshine in December - Franklin, 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).

Average sunshine days in December
Franklin, TN

Average sunshine days in December - Franklin, 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).

Average UV index in December
Franklin, TN

Average UV index in December - Franklin, 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
Franklin, TN

Average cloud cover in December - Franklin, 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).

Average visibility in December
Franklin, TN

Average visibility in December - Franklin, 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).

Franklin, Tennessee, USA

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