December weather forecast
Sewanee, TN

Weather in December

December, the first month of the winter in Sewanee, is still a chilly month, with an average temperature ranging between min 35.4°F (1.9°C) and max 48.6°F (9.2°C).

Temperature

In December, the average high-temperature slightly decreases from a moderate 56.3°F (13.5°C) in November to a chilly 48.6°F (9.2°C). In Sewanee, the average low-temperature is 35.4°F (1.9°C).

Humidity

The most humid month is December, with an average relative humidity of 81%.

Rainfall

In Sewanee, during December, the rain falls for 13.5 days and regularly aggregates up to 4.45" (113mm) of precipitation. In Sewanee, Tennessee, during the entire year, the rain falls for 191.9 days and collects up to 48.15" (1223mm) of precipitation.

Snowfall

Months with snowfall in Sewanee are January through April, October through December. In Sewanee, during December, snow falls for 3.6 days and regularly aggregates up to 1.85" (47mm) of snow. Throughout the year, in Sewanee, there are 20.1 snowfall days, and 7.72" (196mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Sewanee, with an average of 9h and 50min of daylight.
On the first day of December in Sewanee, sunrise is at 6:33 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 4:41 pm CST.

Sunshine

In December, the average sunshine in Sewanee is 4.7h.

UV index

The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The average daily UV index of 2 in December transform into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the most humid month in Sewanee?

December is the most humid month, with an average relative humidity of 81%.

What is the average humidity in December in Sewanee?

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

How many days does it rain in December in Sewanee?

In Sewanee, Tennessee, during December, the rain falls for 13.5 days and regularly aggregates up to 4.45" (113mm) of precipitation.

How much does it snow in Sewanee in December?

In December, in Sewanee, it is snowing for 3.6 days. Throughout December, 1.85" (47mm) of snow is accumulated.

What is the month with the shortest days in Sewanee?

The month with the shortest days is December, with an average of 9h and 50min of daylight.

How many hours of daylight does Sewanee have in December?

The average day length in December in Sewanee, Tennessee, is 9h and 50min.

When are sunrise and sunset in December in Sewanee?

In December, on the first day of the month, sunrise is at 6:33 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 4:41 pm CST.

How long on average sun shines in December in Sewanee?

In December, the average sunshine duration in Sewanee is 4.7h.

When is the lowest UV index in Sewanee?

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

How high is the UV index in December in Sewanee?

In Sewanee, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Sewanee, TN

Average temperature in December - Sewanee, TN
  • Average high temperature in December: 48.6°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (44.2°F).

  • Average low temperature in December: 35.4°F

The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (30°F).

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Average pressure in December
Sewanee, TN

Average pressure in December - Sewanee, 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
Sewanee, TN

Average wind speed in December - Sewanee, TN
  • Average wind speed in December: 6.3mph

The windiest month (with the highest average wind speed) is February (7mph).
The calmest months (with the lowest average wind speed) are July and August (4mph).

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Average humidity in December
Sewanee, TN

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

The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (76%).

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Average rainfall in December
Sewanee, TN

Average rainfall in December - Sewanee, TN
  • Average rainfall in December: 4.45"

The wettest month (with the highest rainfall) is July (5.51").
The driest month (with the least rainfall) is November (2.8").

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Average rainfall days in December
Sewanee, TN

Average rainfall days in December - Sewanee, TN
  • Average rainfall days in December: 13.5 days

The month with the highest number of rainy days is July (22.5 days).
The month with the least rainy days is November (10.4 days).

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Average snowfall in December
Sewanee, TN

Average snowfall in December - Sewanee, TN
  • Average snowfall in December: 1.85"

The month with the highest snowfall is February (2.99").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Sewanee, TN

Average snowfall days in December - Sewanee, TN
  • Average snowfall days in December: 3.6 days

The month with the highest number of snowfall days is January (6.1 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
Sewanee, TN

Average daylight in December / Average sunshine in December - Sewanee, TN
  • Average daylight in December: 9h and 50min

The month with the longest days is June (Average daylight: 14h and 29min).
The month with the shortest days is December (Average daylight: 9h and 50min).

  • Average sunshine in December: 4h and 42min

The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in December
Sewanee, TN

Average sunshine days in December - Sewanee, TN
  • Average sunshine days in December: 14.6 days

The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is July (6.3 days).

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Average UV index in December
Sewanee, TN

Average UV index in December - Sewanee, 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
Sewanee, TN

Average cloud cover in December - Sewanee, TN
  • Average cloud cover in December: 52

The month with the most cloud cover is February (Cloud cover 54).
The months with the least cloud cover are June and September (Cloud cover 33).

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Average visibility in December
Sewanee, TN

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

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

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