December weather forecastSwan Bluff, TN
December
Weather in December
December, the first month of the winter in Swan Bluff, is also a frosty month, with temperature in the range of an average high of 49.1°F (9.5°C) and an average low of 35.6°F (2°C).Temperature
With the onset of December, Swan Bluff's average high-temperature slightly adjusts, moderately receding from November's mild 56.8°F (13.8°C) to a chilly 49.1°F (9.5°C). The mean low-temperature during December nights in Swan Bluff, Tennessee, is a cold 35.6°F (2°C).Humidity
March and December, with an average relative humidity of 79%, are the most humid months in Swan Bluff, Tennessee.Rainfall
In December, in Swan Bluff, the rain falls for 13.2 days. Throughout December, 3.27" (83mm) of precipitation is accumulated. In Swan Bluff, Tennessee, during the entire year, the rain falls for 178.7 days and collects up to 39.21" (996mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Swan Bluff, in December, during 2.4 snowfall days, 0.75" (19mm) of snow is typically accumulated. Throughout the year, in Swan Bluff, there are 13.4 snowfall days, and 3.78" (96mm) of snow is accumulated.Daylight
December has the shortest days of the year in Swan Bluff, with an average of 9h and 48min of daylight.On the first day of the month, sunrise is at 6:41 am and sunset at 4:36 pm. On the last day of December, in Swan Bluff, sunrise is at 6:59 am and sunset at 4:46 pm CST.
Sunshine
The months with the least sunshine in Swan Bluff, Tennessee, are February and December, with an average of 4.6h of sunshine.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index in Swan Bluff. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: During December, 2 as the daily maximum UV index converts into the following advice:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Swan Bluff, TN
- Average high temperature in December: 49.1°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (45°F).
- Average low temperature in December: 35.6°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (30.7°F).
Average pressure in December
Swan Bluff, 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 (29.97"Hg).
Average wind speed in December
Swan Bluff, TN
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is February (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in December
Swan Bluff, TN
- Average humidity in December: 79%
The months with the highest relative humidity are March and December (79%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Swan Bluff, TN
- Average rainfall in December: 3.27"
The wettest month (with the highest rainfall) is July (4.21").
The driest month (with the least rainfall) is September (2.44").
Average rainfall days in December
Swan Bluff, TN
- Average rainfall days in December: 13.2 days
The month with the highest number of rainy days is July (20 days).
The month with the least rainy days is November (10.5 days).
Average snowfall in December
Swan Bluff, TN
- Average snowfall in December: 0.75"
The month with the highest snowfall is January (0.98").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Swan Bluff, TN
- Average snowfall days in December: 2.4 days
The month with the highest number of snowfall days is February (4 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
Swan Bluff, 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 36min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).
Average sunshine days in December
Swan Bluff, TN
- Average sunshine days in December: 14.8 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is July (8.8 days).
Average UV index in December
Swan Bluff, 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).
Average cloud cover in December
Swan Bluff, TN
- Average cloud cover in December: 52
The months with the most cloud cover are February and December (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in December
Swan Bluff, TN
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, June, October, November and December (6mi).
The months with the lowest visibility are January, May, July, August and September (5mi).
