Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
In the transition to December, Swannsylvania observes a minor drop in the average high-temperature, shifting from a refreshing 56.5°F (13.6°C) in November to a frosty 48.7°F (9.3°C). Throughout December, an average low-temperature of 34.5°F (1.4°C) is expected.Humidity
With an average relative humidity of 79%, December is the most humid month.Rainfall
In December, the rain falls for 11.5 days. Throughout December, 2.52" (64mm) of precipitation is accumulated. In Swannsylvania, during the entire year, the rain falls for 150.7 days and collects up to 23.5" (597mm) of precipitation.Snowfall
Months with snowfall in Swannsylvania are January through April, October through December. In Swannsylvania, in December, during 3.1 snowfall days, 1.34" (34mm) of snow is typically accumulated. In Swannsylvania, during the entire year, snow falls for 17.2 days and aggregates up to 5.39" (137mm) of snow.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 7:25 am and sunset at 5:19 pm. On the last day of December, in Swannsylvania, sunrise is at 7:43 am and sunset at 5:29 pm EST.
Sunshine
In December, the average sunshine is 5.5h.UV index
The months with the lowest UV index in Swannsylvania are January, February and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. During bright days, sunglasses that offer UVA and UVB defense are recommended. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Frequently asked questions
What is the temperature in December in Swannsylvania?
What is the most humid month in Swannsylvania?
What is the average humidity in December in Swannsylvania?
How many days does it rain in December in Swannsylvania?
How much does it snow in Swannsylvania in December?
What is the month with the shortest days in Swannsylvania?
What is the average length of the day in December in Swannsylvania?
What time are sunrise and sunset in December in Swannsylvania?
How many hours of sunshine does Swannsylvania have in December?
When is the lowest UV index in Swannsylvania?
What is the UV index reading in December in Swannsylvania?
Average temperature in December
Swannsylvania, TN
- Average high temperature in December: 48.7°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (44.2°F).
- Average low temperature in December: 34.5°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (28.6°F).
Average pressure in December
Swannsylvania, 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 (29.99"Hg).
Average wind speed in December
Swannsylvania, TN
- Average wind speed in December: 5.2mph
The windiest month (with the highest average wind speed) is April (6.1mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in December
Swannsylvania, 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 (72%).
Average rainfall in December
Swannsylvania, TN
- Average rainfall in December: 2.52"
The wettest month (with the highest rainfall) is February (2.99").
The driest month (with the least rainfall) is September (1.22").
Average rainfall days in December
Swannsylvania, TN
- Average rainfall days in December: 11.5 days
The months with the highest number of rainy days are May and July (15.3 days).
The month with the least rainy days is November (9.1 days).
Average snowfall in December
Swannsylvania, TN
- Average snowfall in December: 1.34"
The month with the highest snowfall is January (1.46").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Swannsylvania, TN
- Average snowfall days in December: 3.1 days
The month with the highest number of snowfall days is January (4.8 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
Swannsylvania, TN
- Average daylight in December: 9h and 5min
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 48min).
- Average sunshine in December: 5h and 3min
The months with the most sunshine are June and July (Average sunshine: 10h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in December
Swannsylvania, TN
- Average sunshine days in December: 16.6 days
The month with the most sunshine days is October (19.8 days).
The month with the least sunshine days is July (12.3 days).
Average UV index in December
Swannsylvania, 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
Swannsylvania, TN
- Average cloud cover in December: 44
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are June and August (Cloud cover 26).
Average visibility in December
Swannsylvania, 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).
Swannsylvania, Tennessee, USA
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