December weather forecast
Sweetwater, TN

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Weather in December

December, the first month of the winter in Sweetwater, is also a fresh month, with an average temperature varying between 50.2°F (10.1°C) and 36.1°F (2.3°C).

Temperature

Transition into December subtly marks a drop in the average high-temperature, moderately moving from a moderate 57.9°F (14.4°C) in November to a fresh 50.2°F (10.1°C). Sweetwater reports an average nighttime low-temperature of 36.1°F (2.3°C) in December.

Humidity

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

Rainfall

In Sweetwater, in December, during 12.3 rainfall days, 3.7" (94mm) of precipitation is typically accumulated. Throughout the year, there are 159.4 rainfall days, and 35.71" (907mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Sweetwater are January through April, October through December. In Sweetwater, in December, snow falls for 2.4 days, with typically accumulated 0.51" (13mm) of snow. Throughout the year, in Sweetwater, there are 12.9 snowfall days, and 3.46" (88mm) of snow is accumulated.

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 7:29 am and sunset at 5:24 pm. On the last day of December, in Sweetwater, Tennessee, sunrise is at 7:47 am and sunset at 5:35 pm EST.

Sunshine

The months with the least sunshine are January and December, with an average of 5.1h of sunshine.

UV index

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Sweetwater. 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: A daily maximum UV index of 2 in December translates into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
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Frequently asked questions

What is the temperature in December in Sweetwater?

The average high-temperature, in December, in Sweetwater, is 50.2°F (10.1°C), while the average low-temperature is 36.1°F (2.3°C). In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 86°F (30°C).

What is the most humid month in Sweetwater?

The most humid month is December, with an average relative humidity of 79%.

What is the average humidity in December in Sweetwater?

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

How much does it rain in Sweetwater in December?

In December, in Sweetwater, Tennessee, the rain falls for 12.3 days. Throughout December, 3.7" (94mm) of precipitation is accumulated.

How much does it snow in Sweetwater in December?

In Sweetwater, Tennessee, during December, snow falls for 2.4 days and regularly aggregates up to 0.51" (13mm) of snow.

What is the month with the shortest days in Sweetwater?

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

How many hours of daylight does Sweetwater have in December?

In December, the average day length in Sweetwater, Tennessee, is 9h and 48min.

When is the sunrise / sunset in December in Sweetwater?

In December, on the first day of the month, sunrise is at 7:29 am and sunset at 5:24 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 5:35 pm EST.

What is the month with the least sunshine in Sweetwater?

January and December, with an average of 5.1h of sunshine, are months with the least sunshine in Sweetwater, Tennessee.

How long on average sun shines in December in Sweetwater?

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

When is the lowest UV index in Sweetwater?

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 Sweetwater?

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

Average temperature in December - Sweetwater, TN
  • Average high temperature in December: 50.2°F

The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (45.7°F).

  • Average low temperature in December: 36.1°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

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Average pressure in December
Sweetwater, TN

Average pressure in December - Sweetwater, TN
  • Average pressure in December: 30.15"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
Sweetwater, TN

Average wind speed in December - Sweetwater, TN
  • Average wind speed in December: 5.8mph

The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest months (with the lowest average wind speed) are July and August (4mph).

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Average humidity in December
Sweetwater, TN

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

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is August (74%).

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Average rainfall in December
Sweetwater, TN

Average rainfall in December - Sweetwater, TN
  • Average rainfall in December: 3.7"

The wettest month (with the highest rainfall) is February (3.9").
The driest month (with the least rainfall) is September (1.93").

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Average rainfall days in December
Sweetwater, TN

Average rainfall days in December - Sweetwater, TN
  • Average rainfall days in December: 12.3 days

The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is November (8.8 days).

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Average snowfall in December
Sweetwater, TN

Average snowfall in December - Sweetwater, TN
  • Average snowfall in December: 0.51"

The month with the highest snowfall is January (1.1").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Sweetwater, TN

Average snowfall days in December - Sweetwater, TN
  • Average snowfall days in December: 2.4 days

The month with the highest number of snowfall days is January (4.1 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
Sweetwater, TN

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

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 6min).

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Average sunshine days in December
Sweetwater, TN

Average sunshine days in December - Sweetwater, TN
  • Average sunshine days in December: 16.8 days

The month with the most sunshine days is October (19.6 days).
The month with the least sunshine days is July (11.6 days).

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Average UV index in December
Sweetwater, TN

Average UV index in December - Sweetwater, 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
Sweetwater, TN

Average cloud cover in December - Sweetwater, TN
  • Average cloud cover in December: 48

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 27).

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Average visibility in December
Sweetwater, TN

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

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