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
December witnesses a gentle descent in average high-temperature, descending from November's fresh 54.9°F (12.7°C) to a chilly 48°F (8.9°C). In the month of December, the temperature generally rests at an average low of 33.3°F (0.7°C).Humidity
The average relative humidity in December in Swannanoa is 77%.Rainfall
The wettest months in Swannanoa are April and December, with an average 3.07" (78mm) of rainfall.Snowfall
Months with snowfall in Swannanoa, North Carolina, are January through April, November and December. December is the month with the most snowfall. Snow falls for 1.7 days and accumulates 4.37" (111mm) of snow.Daylight
The month with the shortest days in Swannanoa is December, with an average of 9h and 48min of daylight.On the first day of the month, sunrise is at 7:21 am and sunset at 5:16 pm. On the last day of December, sunrise is at 7:38 am and sunset at 5:26 pm EST.
Sunshine
With an average of 5.6h of sunshine, December has the least sunshine of the year in Swannanoa.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Swannanoa. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum UV index of 2 in December translates into the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Frequently asked questions
What is the usual temperature for Swannanoa in December?
What is the average humidity in December in Swannanoa?
What is the wettest month in Swannanoa?
How many days does it rain in December in Swannanoa?
When does it snow the most in Swannanoa?
How many days does it snow in December in Swannanoa?
What is the month with the shortest days in Swannanoa?
How many hours of daylight does Swannanoa have in December?
When is the sunrise / sunset in December in Swannanoa?
What is the month with the least sunshine in Swannanoa?
How many hours of sunshine does Swannanoa have in December?
What is the month with the lowest UV index in Swannanoa?
What is the UV index intensity in December in Swannanoa?
Average temperature in December
Swannanoa, NC
- Average high temperature in December: 48°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (43.5°F).
- Average low temperature in December: 33.3°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).
Average pressure in December
Swannanoa, NC
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in December
Swannanoa, NC
- Average wind speed in December: 5.6mph
The windiest months (with the highest average wind speed) are January, February and April (6.2mph).
The calmest month (with the lowest average wind speed) is August (3.4mph).
Average humidity in December
Swannanoa, NC
- Average humidity in December: 77%
The months with the highest relative humidity are May and September (78%).
The months with the lowest relative humidity are January and November (74%).
Average rainfall in December
Swannanoa, NC
- Average rainfall in December: 3.07"
The wettest months (with the highest rainfall) are April and December (3.07").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in December
Swannanoa, NC
- Average rainfall days in December: 10.6 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (8.5 days).
Average snowfall in December
Swannanoa, NC
- Average snowfall in December: 4.37"
The month with the highest snowfall is December (4.37").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Swannanoa, NC
- Average snowfall days in December: 1.7 days
The month with the highest number of snowfall days is February (4.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Swannanoa, NC
- 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 4min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in December
Swannanoa, NC
- Average sunshine days in December: 19.2 days
The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is July (10.4 days).
Average UV index in December
Swannanoa, NC
- Average UV index in December: 2
The months with the highest UV index are 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
Swannanoa, NC
- Average cloud cover in December: 42
The months with the most cloud cover are February and March (Cloud cover 43).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in December
Swannanoa, NC
- Average visibility in December: 5mi
The months with the highest visibility are June, July, August and November (6mi).
The months with the lowest visibility are January, February, March, April, May, September, October and December (5mi).
Swannanoa, North Carolina, USA
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