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's onset introduces a mild reduction in the average high-temperature, from a mild 58.8°F (14.9°C) in November to a cool 51.8°F (11°C). Throughout December, an average low-temperature of 37.6°F (3.1°C) is experienced.Humidity
With an average relative humidity of 76%, December is the most humid month in Mountain Island.Rainfall
In Mountain Island, in December, during 11.1 rainfall days, 3.03" (77mm) of precipitation is typically accumulated. In Mountain Island, during the entire year, the rain falls for 158.9 days and collects up to 31.26" (794mm) of precipitation.Snowfall
January through March, November and December are months with snowfall in Mountain Island. December is the month with the most snowfall in Mountain Island. Snow falls for 0.6 days and accumulates 2.01" (51mm) of snow.Daylight
The month with the shortest days in Mountain Island is December, with an average of 9h and 48min of daylight.On the first day of the month, sunrise is at 7:14 am and sunset at 5:11 pm. On the last day of December, sunrise is at 7:32 am and sunset at 5:21 pm EST.
Sunshine
December has the least sunshine of the year, with an average of 5.3h of sunshine.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the average person.Note: In December, an average UV index of 2 transforms into the following instructions:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Frequently asked questions
What is the average December temperature in Mountain Island?
What is the most humid month in Mountain Island?
What is the average humidity in December in Mountain Island?
How many days does it rain in December in Mountain Island?
What is the snowiest month in Mountain Island?
How much does it snow in Mountain Island in December?
What is the month with the shortest days in Mountain Island?
How many hours of daylight does Mountain Island have in December?
When is the sunrise / sunset in December in Mountain Island?
What is the month with the least sunshine in Mountain Island?
How many hours of sunshine does Mountain Island have in December?
What are the months with the lowest UV index in Mountain Island?
What is the UV index intensity in December in Mountain Island?
Average temperature in December
Mountain Island, NC
- Average high temperature in December: 51.8°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (47.8°F).
- Average low temperature in December: 37.6°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (32.5°F).
Average pressure in December
Mountain Island, 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 (29.98"Hg).
Average wind speed in December
Mountain Island, NC
- Average wind speed in December: 6mph
The windiest month (with the highest average wind speed) is April (7.2mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in December
Mountain Island, NC
- Average humidity in December: 76%
The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is July (70%).
Average rainfall in December
Mountain Island, NC
- Average rainfall in December: 3.03"
The wettest month (with the highest rainfall) is August (3.43").
The driest month (with the least rainfall) is October (1.93").
Average rainfall days in December
Mountain Island, NC
- Average rainfall days in December: 11.1 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in December
Mountain Island, NC
- Average snowfall in December: 2.01"
The month with the highest snowfall is December (2.01").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Mountain Island, NC
- Average snowfall days in December: 0.6 days
The month with the highest number of snowfall days is February (1.8 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
Mountain Island, 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 2min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in December
Mountain Island, NC
- Average sunshine days in December: 18.6 days
The month with the most sunshine days is October (20.7 days).
The month with the least sunshine days is July (10.6 days).
Average UV index in December
Mountain Island, NC
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Mountain Island, NC
- Average cloud cover in December: 43
The month with the most cloud cover is December (Cloud cover 43).
The months with the least cloud cover are June and July (Cloud cover 30).
Average visibility in December
Mountain Island, 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).
Mountain Island, North Carolina, USA
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