December weather forecast
Brentwood, TN

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Weather in December

With December comes the advent of winters, as the city experiences one of the lowest temperature ranges. December also records a high cloud percentage, further dipping the temperature during the night. As the city wraps under a thick blanket of snow, festive lights illuminate the town, offering a striking contrast. Despite the reduced daylight hours, the city glows under the festive spirit. December in Brentwood serves as the perfect end to the year, with a promising onset of the holiday season.

Temperature

In the transition to December, Brentwood observes a minor drop in the average high-temperature, shifting from a moderate 57.4°F (14.1°C) in November to a frosty 48.9°F (9.4°C). Brentwood, during December nights, observes an average temperature of 35.8°F (2.1°C).

Humidity

December is the most humid month in Brentwood, Tennessee, with an average relative humidity of 78%.

Rainfall

In Brentwood, in December, during 11.7 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. In Brentwood, during the entire year, the rain falls for 166.2 days and collects up to 33.86" (860mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall in Brentwood. In December, it is snowing for 2 days. Throughout December, 0.55" (14mm) of snow is accumulated. In Brentwood, during the entire year, snow falls for 9.7 days and aggregates up to 3.15" (80mm) of snow.

Daylight

With an average of 9h and 48min of daylight, December has the shortest days of the year in Brentwood.
On the first day of the month, sunrise is at 6:39 am and sunset at 4:32 pm. On the last day of December, in Brentwood, sunrise is at 6:57 am and sunset at 4:43 pm CST.

Sunshine

The average sunshine in December is 4.6h.

UV index

The months with the lowest UV index in Brentwood are January, February and December, with an average maximum UV index of 2. 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: In December, the UV index of 2 transforms into the following advice:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
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Frequently asked questions

What are December temperatures in Brentwood?

In Brentwood, in December, the average high-temperature is 48.9°F (9.4°C), and the average low-temperature is 35.8°F (2.1°C). In September, the average heat index (a.k.a. 'real feel', 'feels like'), which combines air temperature and relative humidity, is computed to be 86°F (30°C).

What is the most humid month in Brentwood?

December is the most humid month in Brentwood, Tennessee, with an average relative humidity of 78%.

What is the average humidity in December in Brentwood?

The average relative humidity in December is 78%.

How much does it rain in Brentwood in December?

In Brentwood, in December, it is raining for 11.7 days, with typically 2.56" (65mm) of accumulated precipitation.

How many days does it snow in December in Brentwood?

In December, in Brentwood, it is snowing for 2 days. Throughout December, 0.55" (14mm) of snow is accumulated.

What is the month with the shortest days in Brentwood?

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

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

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

What time are sunrise and sunset in December in Brentwood?

On the first day of December, sunrise is at 6:39 am and sunset at 4:32 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 Brentwood have in December?

In December, the average sunshine duration in Brentwood is 4.6h.

What is the month with the lowest UV index in Brentwood?

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 Brentwood?

In December, the average daily maximum UV index in Brentwood is 2. A UV Index value of 2, and less, symbolizes a low health threat 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
Brentwood, TN

Average temperature in December - Brentwood, TN
  • Average high temperature in December: 48.9°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (45°F).

  • Average low temperature in December: 35.8°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

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Average pressure in December
Brentwood, TN

Average pressure in December - Brentwood, 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
Brentwood, TN

Average wind speed in December - Brentwood, TN
  • Average wind speed in December: 7.5mph

The windiest month (with the highest average wind speed) is February (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).

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Average humidity in December
Brentwood, TN

Average humidity in December - Brentwood, TN
  • Average humidity in December: 78%

The month with the highest relative humidity is December (78%).
The months with the lowest relative humidity are June and October (73%).

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Average rainfall in December
Brentwood, TN

Average rainfall in December - Brentwood, TN
  • Average rainfall in December: 2.56"

The wettest month (with the highest rainfall) is July (3.94").
The driest month (with the least rainfall) is November (1.81").

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Average rainfall days in December
Brentwood, TN

Average rainfall days in December - Brentwood, TN
  • Average rainfall days in December: 11.7 days

The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is November (9.3 days).

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Average snowfall in December
Brentwood, TN

Average snowfall in December - Brentwood, TN
  • Average snowfall in December: 0.55"

The month with the highest snowfall is March (0.87").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Brentwood, TN

Average snowfall days in December - Brentwood, TN
  • Average snowfall days in December: 2 days

The month with the highest number of snowfall days is February (3.2 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
Brentwood, TN

Average daylight in December / Average sunshine in December - Brentwood, 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
Brentwood, TN

Average sunshine days in December - Brentwood, TN
  • Average sunshine days in December: 17 days

The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is July (10.3 days).

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Average UV index in December
Brentwood, TN

Average UV index in December - Brentwood, 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
Brentwood, TN

Average cloud cover in December - Brentwood, 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 29).

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Average visibility in December
Brentwood, TN

Average visibility in December - Brentwood, 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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Brentwood, Tennessee, USA

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