December weather forecastSylva, NC
December
Weather in December
The first month of the winter, December, is also a frosty month in Sylva, North Carolina, with temperature in the range of an average high of 47.1°F (8.4°C) and an average low of 32.4°F (0.2°C).Temperature
The onset of December brings a small shift in high-temperatures, falling from a fresh 53.6°F (12°C) in November to a frosty 47.1°F (8.4°C). Throughout December, an average low-temperature of 32.4°F (0.2°C) is expected.Humidity
The average relative humidity in December is 80%.Rainfall
In Sylva, in December, during 12.4 rainfall days, 3.94" (100mm) of precipitation is typically accumulated. Throughout the year, there are 189.2 rainfall days, and 40.39" (1026mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall in Sylva, North Carolina. The month with the most snowfall in Sylva is December, when snow falls for 3.4 days and typically aggregates up to 2.95" (75mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 48min of daylight.On the first day of the month, sunrise is at 7:24 am and sunset at 5:20 pm. On the last day of December, sunrise is at 7:41 am and sunset at 5:30 pm EST.
Sunshine
With an average of 5.2h of sunshine, December has the least sunshine of the year.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Sylva, North Carolina. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. To cut down UV radiation exposure by about half, sport a wide-brim hat. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Sylva, NC
- Average high temperature in December: 47.1°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (42.6°F).
- Average low temperature in December: 32.4°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (27°F).
Average pressure in December
Sylva, NC
- Average pressure in December: 30.14"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in December
Sylva, NC
- Average wind speed in December: 5.3mph
The windiest months (with the highest average wind speed) are January, February and April (5.8mph).
The calmest month (with the lowest average wind speed) is August (3.1mph).
Average humidity in December
Sylva, NC
- Average humidity in December: 80%
The months with the highest relative humidity are May and September (81%).
The month with the lowest relative humidity is November (77%).
Average rainfall in December
Sylva, NC
- Average rainfall in December: 3.94"
The wettest month (with the highest rainfall) is July (4.33").
The driest month (with the least rainfall) is September (2.56").
Average rainfall days in December
Sylva, NC
- Average rainfall days in December: 12.4 days
The month with the highest number of rainy days is July (20.9 days).
The month with the least rainy days is November (10.7 days).
Average snowfall in December
Sylva, NC
- Average snowfall in December: 2.95"
The month with the highest snowfall is December (2.95").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Sylva, NC
- Average snowfall days in December: 3.4 days
The months with the highest number of snowfall days are January and February (5.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Sylva, NC
- 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: 5h and 12min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in December
Sylva, NC
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is October (17.7 days).
The month with the least sunshine days is July (8.8 days).
Average UV index in December
Sylva, NC
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in December
Sylva, NC
- Average cloud cover in December: 50
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 37).
Average visibility in December
Sylva, NC
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (5mi).
The month with the lowest visibility is September (4mi).
