December weather forecastJefferson, NC
December
Weather in December
December, the first month of the winter in Jefferson, is still a chilly month, with temperature in the range of an average low of 30.4°F (-0.9°C) and an average high of 43.7°F (6.5°C).Temperature
December implies a soft temperature shift, with average high-temperatures reducing from November's fresh 51.4°F (10.8°C) to a chilly 43.7°F (6.5°C). An average low-temperature of 30.4°F (-0.9°C) is expected during December.Humidity
In December, the average relative humidity is 79%.Rainfall
In Jefferson, during December, the rain falls for 7.3 days and regularly aggregates up to 2.2" (56mm) of precipitation. In Jefferson, during the entire year, the rain falls for 118.5 days and collects up to 21.5" (546mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. The month with the most snowfall in Jefferson is December, when snow falls for 3.5 days and typically aggregates up to 4.76" (121mm) of snow.Daylight
With an average of 9h and 42min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:19 am and sunset at 5:10 pm. On the last day of December, in Jefferson, sunrise is at 7:37 am and sunset at 5:20 pm EST.
Sunshine
The months with the least sunshine are January and December, with an average of 5.2h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the average person.Note: In December, the maximum UV index of 2 suggests these recommendations:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Jefferson, NC
- Average high temperature in December: 43.7°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in December: 30.4°F
The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (24.4°F).
Average pressure in December
Jefferson, 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
Jefferson, NC
- Average wind speed in December: 7.2mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in December
Jefferson, NC
- Average humidity in December: 79%
The months with the highest relative humidity are May and September (80%).
The month with the lowest relative humidity is November (76%).
Average rainfall in December
Jefferson, NC
- Average rainfall in December: 2.2"
The wettest month (with the highest rainfall) is February (2.28").
The driest month (with the least rainfall) is September (1.26").
Average rainfall days in December
Jefferson, NC
- Average rainfall days in December: 7.3 days
The month with the highest number of rainy days is July (15.5 days).
The month with the least rainy days is November (6.1 days).
Average snowfall in December
Jefferson, NC
- Average snowfall in December: 4.76"
The month with the highest snowfall is December (4.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Jefferson, NC
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Jefferson, NC
- Average daylight in December: 9h and 42min
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 42min).
- Average sunshine in December: 5h and 12min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The months with the least sunshine are January and December (Average sunshine: 5h and 12min).
Average sunshine days in December
Jefferson, NC
- Average sunshine days in December: 21.2 days
The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is July (14.2 days).
Average UV index in December
Jefferson, 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, November and December (UV index 2).
Average cloud cover in December
Jefferson, NC
- Average cloud cover in December: 48
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are June and July (Cloud cover 36).
Average visibility in December
Jefferson, NC
- Average visibility in December: 5mi
The month with the highest visibility is November (6mi).
The month with the lowest visibility is September (4mi).
