December weather forecast
Speedwell, TN

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Weather in December

The first month of the winter, December, is also a frosty month in Speedwell, Tennessee, with an average temperature varying between 33.1°F (0.6°C) and 45.9°F (7.7°C).

Temperature

A subtle shift in Speedwell's weather is observed as November turns into December, with the average high temperature reducing from a cool 54.3°F (12.4°C) to a chilly 45.9°F (7.7°C). In December, the average low-temperature records at an icy 33.1°F (0.6°C) during the nights.

Humidity

The months with the highest humidity in Speedwell are February and December, with an average relative humidity of 81%.

Rainfall

In December, the rain falls for 14.2 days. Throughout December, 3.54" (90mm) of precipitation is accumulated. In Speedwell, during the entire year, the rain falls for 185.4 days and collects up to 40.59" (1031mm) of precipitation.

Snowfall

Months with snowfall in Speedwell are January through April, October through December. In Speedwell, in December, during 5.8 snowfall days, 2.4" (61mm) of snow is typically accumulated. In Speedwell, during the entire year, snow falls for 30.4 days and aggregates up to 12.17" (309mm) of snow.

Daylight

The month with the shortest days in Speedwell is December, with an average of 9h and 42min of daylight.
On the first day of December in Speedwell, sunrise is at 7:29 am and sunset at 5:20 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 5:30 pm EST.

Sunshine

In December, the average sunshine is 4.6h.

UV index

The months with the lowest UV index in Speedwell are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for average individuals.
Note: In December, an average UV index of 2 transforms into the following instructions:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
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Frequently asked questions

What is the temperature in December in Speedwell?

An average high-temperature, in December, in Speedwell, is 45.9°F (7.7°C) and the average low-temperature is 33.1°F (0.6°C). In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 95°F (35°C).

What are the most humid months in Speedwell?

The months with the highest humidity are February and December, with an average relative humidity of 81%.

What is the average humidity in December in Speedwell?

In Speedwell, the average relative humidity in December is 81%.

How much does it rain in Speedwell in December?

In Speedwell, during December, the rain falls for 14.2 days and regularly aggregates up to 3.54" (90mm) of precipitation.

How many days does it snow in December in Speedwell?

In December, in Speedwell, it is snowing for 5.8 days. Throughout December, 2.4" (61mm) of snow is accumulated.

What is the month with the shortest days in Speedwell?

December has the shortest days of the year in Speedwell, with an average of 9h and 42min of daylight.

How many hours of daylight does Speedwell have in December?

In December, the average day length in Speedwell, Tennessee, is 9h and 43min.

When is the sunrise / sunset in December in Speedwell?

In December, on the first day of the month, sunrise is at 7:29 am and sunset at 5:20 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 5:30 pm EST.

How many hours of sunshine does Speedwell have in December?

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

When is the lowest UV index in Speedwell?

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

What is the UV index intensity in December in Speedwell?

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

Average temperature in December - Speedwell, TN
  • Average high temperature in December: 45.9°F

The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (41.5°F).

  • Average low temperature in December: 33.1°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).

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Average pressure in December
Speedwell, TN

Average pressure in December - Speedwell, 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
Speedwell, TN

Average wind speed in December - Speedwell, TN
  • Average wind speed in December: 5.5mph

The windiest month (with the highest average wind speed) is April (6.4mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).

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Average humidity in December
Speedwell, TN

Average humidity in December - Speedwell, TN
  • Average humidity in December: 81%

The months with the highest relative humidity are February and December (81%).
The months with the lowest relative humidity are June, July, August and November (77%).

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Average rainfall in December
Speedwell, TN

Average rainfall in December - Speedwell, TN
  • Average rainfall in December: 3.54"

The wettest month (with the highest rainfall) is February (4.65").
The driest month (with the least rainfall) is September (2.4").

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Average rainfall days in December
Speedwell, TN

Average rainfall days in December - Speedwell, TN
  • Average rainfall days in December: 14.2 days

The month with the highest number of rainy days is July (20.1 days).
The month with the least rainy days is November (11.2 days).

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Average snowfall in December
Speedwell, TN

Average snowfall in December - Speedwell, TN
  • Average snowfall in December: 2.4"

The month with the highest snowfall is February (3.62").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Speedwell, TN

Average snowfall days in December - Speedwell, TN
  • Average snowfall days in December: 5.8 days

The month with the highest number of snowfall days is January (8.9 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
Speedwell, TN

Average daylight in December / Average sunshine in December - Speedwell, TN
  • Average daylight in December: 9h and 4min

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 42min).

  • Average sunshine in December: 4h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

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Average sunshine days in December
Speedwell, TN

Average sunshine days in December - Speedwell, TN
  • Average sunshine days in December: 13.3 days

The month with the most sunshine days is October (16.2 days).
The month with the least sunshine days is July (8.8 days).

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Average UV index in December
Speedwell, TN

Average UV index in December - Speedwell, 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, November and December (UV index 2).

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Average cloud cover in December
Speedwell, TN

Average cloud cover in December - Speedwell, TN
  • Average cloud cover in December: 53

The month with the most cloud cover is February (Cloud cover 57).
The months with the least cloud cover are June and August (Cloud cover 33).

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Average visibility in December
Speedwell, TN

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

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

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Speedwell, Tennessee, USA

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