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
The arrival of December correlates with a minor temperature reduction, down from November's moderate 60.6°F (15.9°C) to a cool 54.3°F (12.4°C). In Mar-Mac, an average low-temperature of 39.9°F (4.4°C) is recorded during December nights.Humidity
In December, the average relative humidity is 76%.Rainfall
In Mar-Mac, in December, during 10.5 rainfall days, 2.6" (66mm) of precipitation is typically accumulated. Throughout the year, there are 165.9 rainfall days, and 34.17" (868mm) of precipitation is accumulated.Snowfall
January through March and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 0.2 snowfall days, it receives 0.28" (7mm) of snow. Throughout the year, there are 2.3 snowfall days, and 1.81" (46mm) of snow is accumulated.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 7:03 am and sunset at 4:59 pm. On the last day of December, sunrise is at 7:20 am and sunset at 5:10 pm EST.
Sunshine
January and December, with an average of 5.5h of sunshine, are months with the least sunshine.UV index
In December, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.Note: The UV index of 3 during December leads to these advisories:
Heed the precautions - It is counselled to guard against solar damage. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature?
What is the average humidity in December?
How many days does it rain in December?
When does it start to snow in Mar-Mac?
What is the month with the shortest days?
How many hours of daylight does Mar-Mac have in December?
When is the sunrise / sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
What is the UV index intensity in December?
Average temperature in December
Mar-Mac, NC
- Average high temperature in December: 54.3°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (49.6°F).
- Average low temperature in December: 39.9°F
The month with the highest average low temperature is July (71.6°F).
The coldest month (with the lowest average low temperature) is January (34.5°F).
Average pressure in December
Mar-Mac, NC
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in December
Mar-Mac, NC
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is April (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in December
Mar-Mac, NC
- Average humidity in December: 76%
The months with the highest relative humidity are May, August and September (78%).
The month with the lowest relative humidity is January (73%).
Average rainfall in December
Mar-Mac, NC
- Average rainfall in December: 2.6"
The wettest month (with the highest rainfall) is August (4.29").
The driest month (with the least rainfall) is January (1.81").
Average rainfall days in December
Mar-Mac, NC
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is November (9.1 days).
Average snowfall in December
Mar-Mac, NC
- Average snowfall in December: 0.28"
The month with the highest snowfall is January (0.79").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Mar-Mac, NC
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is January (1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Mar-Mac, 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 3min
The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).
Average sunshine days in December
Mar-Mac, NC
- Average sunshine days in December: 18.6 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (9.4 days).
Average UV index in December
Mar-Mac, NC
- Average UV index in December: 3
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in December
Mar-Mac, NC
- Average cloud cover in December: 41
The months with the most cloud cover are February and March (Cloud cover 42).
The month with the least cloud cover is June (Cloud cover 32).
Average visibility in December
Mar-Mac, NC
- 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).
Mar-Mac, North Carolina, USA
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