December weather forecastMills River, NC
December
Weather in December
December, the first month of the winter in Mills River, is still a chilly month, with an average temperature varying between 33.8°F (1°C) and 48.4°F (9.1°C).Temperature
Transitioning from November to December involves a subtle drop in average high-temperatures, descending from a mild 55.8°F (13.2°C) to a frosty 48.4°F (9.1°C). December nights in Mills River are marked by an average low-temperature of 33.8°F (1°C).Humidity
The months with the highest humidity are May, September and December, with an average relative humidity of 78%.Rainfall
December is the month with the most rainfall. Rain falls for 8.4 days and accumulates 1.65" (42mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. The month with the most snowfall in Mills River is December, when snow falls for 1.4 days and typically aggregates up to 1.3" (33mm) 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 December, sunrise is at 7:21 am and sunset at 5:17 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 5:28 pm EST.
Sunshine
December has the least sunshine of the year, with an average of 5.5h of sunshine.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 minimal health hazard from unsafe exposure to UV radiation for the average person.Note: The daily maximum UV index of 2 in December interprets into the following advice:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Mills River, NC
- Average high temperature in December: 48.4°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 (44.2°F).
- Average low temperature in December: 33.8°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (28°F).
Average pressure in December
Mills River, 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
Mills River, NC
- Average wind speed in December: 5.8mph
The windiest month (with the highest average wind speed) is January (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).
Average humidity in December
Mills River, NC
- Average humidity in December: 78%
The months with the highest relative humidity are May, September and December (78%).
The months with the lowest relative humidity are January and November (74%).
Average rainfall in December
Mills River, NC
- Average rainfall in December: 1.65"
The wettest month (with the highest rainfall) is December (1.65").
The driest month (with the least rainfall) is September (0.91").
Average rainfall days in December
Mills River, NC
- Average rainfall days in December: 8.4 days
The month with the highest number of rainy days is July (15 days).
The month with the least rainy days is November (6.8 days).
Average snowfall in December
Mills River, NC
- Average snowfall in December: 1.3"
The month with the highest snowfall is December (1.3").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Mills River, NC
- Average snowfall days in December: 1.4 days
The month with the highest number of snowfall days is February (2.5 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
Mills River, 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 30min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in December
Mills River, NC
- Average sunshine days in December: 20.5 days
The month with the most sunshine days is October (21.9 days).
The month with the least sunshine days is July (12.6 days).
Average UV index in December
Mills River, 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
Mills River, NC
- Average cloud cover in December: 43
The months with the most cloud cover are February, March and December (Cloud cover 43).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in December
Mills River, NC
- Average visibility in December: 5mi
The months with the highest visibility are February, June, July and November (6mi).
The months with the lowest visibility are January, March, April, May, August, September, October and December (5mi).
