December weather forecast
Westwood, TN

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Weather in December

December, the first month of the winter in Westwood, is also a frosty month, with an average temperature fluctuating between 49.6°F (9.8°C) and 36.1°F (2.3°C).

Temperature

In December, the average high-temperature marginally decreases from a refreshing 57.4°F (14.1°C) in November to a frosty 49.6°F (9.8°C). The average low-temperature in Westwood during December nights is an icy 36.1°F (2.3°C).

Humidity

With an average relative humidity of 80%, December is the most humid month.

Rainfall

In Westwood, during December, the rain falls for 12.2 days and regularly aggregates up to 3.23" (82mm) of precipitation. In Westwood, during the entire year, the rain falls for 171.3 days and collects up to 35.55" (903mm) of precipitation.

Snowfall

Months with snowfall in Westwood are January through April, November and December. In Westwood, in December, during 2.1 snowfall days, 0.59" (15mm) of snow is typically accumulated. In Westwood, during the entire year, snow falls for 11.2 days and aggregates up to 2.64" (67mm) 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 the month, sunrise is at 6:35 am and sunset at 4:31 pm. On the last day of December, sunrise is at 6:53 am and sunset at 4:42 pm CST.

Sunshine

The average sunshine in December in Westwood is 4.8h.

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 rays for the ordinary person.
Note: In December, a daily UV index of 2 turns into the following recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
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Frequently asked questions

What is the average December temperature in Westwood?

Westwood in December has an average high-temperature of 49.6°F (9.8°C) and an average low-temperature of 36.1°F (2.3°C). The average heat index (a.k.a. 'feels like', '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 Westwood?

December is the most humid month in Westwood, with an average relative humidity of 80%.

What is the average humidity in December in Westwood?

The average relative humidity in December in Westwood, Tennessee, is 80%.

How much does it rain in Westwood in December?

In Westwood, Tennessee, during December, the rain falls for 12.2 days and regularly aggregates up to 3.23" (82mm) of precipitation.

How much does it snow in Westwood in December?

In Westwood, Tennessee, in December, during 2.1 snowfall days, 0.59" (15mm) of snow is typically accumulated.

What is the month with the shortest days in Westwood?

The month with the shortest days in Westwood, Tennessee, is December, with an average of 9h and 48min of daylight.

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

In December, the average day length in Westwood, Tennessee, is 9h and 49min.

What time are sunrise and sunset in December in Westwood?

On the first day of December, sunrise is at 6:35 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 4:42 pm CST.

How long on average sun shines in December in Westwood?

In December, the average sunshine duration is 4.8h.

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

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

How high is the UV index in December in Westwood?

In December, the average daily maximum UV index in Westwood, Tennessee, is 2. A UV Index reading of 2, and below, represents a minimal hazard to health 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
Westwood, TN

Average temperature in December - Westwood, TN
  • Average high temperature in December: 49.6°F

The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (45.1°F).

  • Average low temperature in December: 36.1°F

The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (31.1°F).

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Average pressure in December
Westwood, TN

Average pressure in December - Westwood, 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 (29.98"Hg).

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Average wind speed in December
Westwood, TN

Average wind speed in December - Westwood, TN
  • Average wind speed in December: 7.3mph

The windiest month (with the highest average wind speed) is February (8mph).
The calmest month (with the lowest average wind speed) is July (4.5mph).

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Average humidity in December
Westwood, TN

Average humidity in December - Westwood, TN
  • Average humidity in December: 80%

The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are October and November (75%).

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Average rainfall in December
Westwood, TN

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

The wettest month (with the highest rainfall) is February (4.02").
The driest month (with the least rainfall) is September (1.85").

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Average rainfall days in December
Westwood, TN

Average rainfall days in December - Westwood, TN
  • Average rainfall days in December: 12.2 days

The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is November (9.3 days).

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Average snowfall in December
Westwood, TN

Average snowfall in December - Westwood, TN
  • Average snowfall in December: 0.59"

The month with the highest snowfall is February (0.91").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Westwood, TN

Average snowfall days in December - Westwood, TN
  • Average snowfall days in December: 2.1 days

The months with the highest number of snowfall days are January and February (3.3 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
Westwood, TN

Average daylight in December / Average sunshine in December - Westwood, 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: 4h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in December
Westwood, TN

Average sunshine days in December - Westwood, TN
  • Average sunshine days in December: 16.3 days

The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is July (9.1 days).

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Average UV index in December
Westwood, TN

Average UV index in December - Westwood, 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
Westwood, TN

Average cloud cover in December - Westwood, 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 30).

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Average visibility in December
Westwood, TN

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

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

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Westwood, Tennessee, USA

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