December weather forecastSewanee, TN
December
Weather in December
December in Sewanee, Tennessee is typically chilly, rounding out the year with a return to winter weather. Temperatures continue to dip, with shorter days becoming the norm. In contrast to November, snowfall appears more significantly, while rainfall does not show any drastic changes. The daylight hours reach their lowest point of the year. However, distinctive about December, is the reappearance of significant snowfall, recorded at 1.85" (47mm), making the town glitter with seasonal charm.Temperature
With the beginning of December, the average high-temperature shows a small decrease, transitioning from a refreshing 56.3°F (13.5°C) in November to a chilly 48.6°F (9.2°C). During the month of December, the temperature generally drops to a low average of 35.4°F (1.9°C).Humidity
The most humid month in Sewanee is December, with an average relative humidity of 81%.Rainfall
In Sewanee, in December, it is raining for 13.5 days, with typically 4.45" (113mm) of accumulated precipitation. Throughout the year, there are 191.9 rainfall days, and 48.15" (1223mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In Sewanee, Tennessee, in December, snow falls for 3.6 days, with typically accumulated 1.85" (47mm) of snow. Throughout the year, there are 20.1 snowfall days, and 7.72" (196mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 48min of daylight.On the first day of the month, sunrise is at 6:34 am and sunset at 4:31 pm. On the last day of December, sunrise is at 6:52 am and sunset at 4:41 pm CST.
Sunshine
In December, the average sunshine in Sewanee is 4.7h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in December /
Average sunshine in December
Sewanee, TN
- Average daylight in December: 9h and 48min
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 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).
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).
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).
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).
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).
