December weather forecast and climate
Mountain Island, NC

Weather in December

December, the first month of the winter, in Mountain Island, is also a fresh month, with temperature in the range of an average high of 51.8°F (11°C) and an average low of 37.6°F (3.1°C).

Temperature

In Mountain Island, the average high-temperature marginally drops, from a moderate 58.8°F (14.9°C) in November, to a fresh 51.8°F (11°C). In December, in Mountain Island, the average low-temperature is 37.6°F (3.1°C).

Humidity

December is the most humid month, with an average relative humidity of 76%.

Rainfall

In Mountain Island, during December, the rain falls for 11.1 days and regularly aggregates up to 3.03" (77mm) of precipitation. 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. The month with the most snowfall is December when snow falls for 0.6 days and typically aggregates up to 2.01" (51mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9.8h of daylight.

Sunshine

The month with the least sunshine in Mountain Island, North Carolina, is December, with an average of 5.3h of sunshine.

UV index

Months with the lowest UV index in Mountain Island are January and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from the exposure to the Sun's UV rays for the average person.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
[Resources]

FAQ

What is the most humid month in Mountain Island?

December is the most humid month, with an average relative humidity of 76%.

What is the average humidity in December in Mountain Island?

In December, the average relative humidity is 76%.

How much does it rain in Mountain Island in December?

In Mountain Island, in December, during 11.1 rainfall days, 3.03" (77mm) of precipitation is typically accumulated.

What is the snowiest month in Mountain Island?

The month with the most snowfall in Mountain Island is December when snow falls for 0.6 days and typically aggregates up to 2.01" (51mm) of snow.

How much does it snow in Mountain Island in December?

In December, in Mountain Island, it is snowing for 0.6 days. Throughout December, 2.01" (51mm) of snow is accumulated.

What is the month with the shortest days in Mountain Island?

With an average of 9.8h of daylight, December has the shortest days of the year in Mountain Island.

How many hours of daylight does Mountain Island have in December?

The average length of the day in December in Mountain Island is 9.8h.

What is the month with the least sunshine in Mountain Island?

December has the least sunshine of the year, with an average of 5.3h of sunshine.

How long on average sun shines in December in Mountain Island?

The average sunshine in December in Mountain Island is 5.3h.

When is the lowest UV index in Mountain Island?

January and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index reading in December in Mountain Island?

The average daily maximum UV index in December in Mountain Island is 2. A UV Index reading of 2, and below, represents a low health risk from the exposure to the Sun's UV radiation.

Average temperature in December
Mountain Island, NC

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).

[Resources]

Average pressure in December
Mountain Island, NC

Average pressure in December - Mountain Island, NC
  • Average pressure in December: 30.14"

The month with the highest atmospheric pressure is November (30.16").
The month with the lowest atmospheric pressure is June (29.98").

[Resources]

Average wind speed in December
Mountain Island, NC

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).

[Resources]

Average humidity in December
Mountain Island, NC

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%).

[Resources]

Average rainfall in December
Mountain Island, NC

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").

[Resources]

Average rainfall days in December
Mountain Island, NC

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).

[Resources]

Average snowfall in December
Mountain Island, NC

Average snowfall in December - Mountain Island, NC
  • Average snowfall in December: 2.01"

The month with the highest snowfall is December (2.01").
Months with the least snowfall are April, May, June, July, August, September and October (0").

[Resources]

Average snowfall days in December
Mountain Island, NC

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).
Months with the least snowfall days are April, May, June, July, August, September and October (0 days).

[Resources]

Average daylight in December /
Average sunshine in December
Mountain Island, NC

Average daylight in December / Average sunshine in December - Mountain Island, NC
  • Average daylight in December: 9.8h

The month with the longest days is June (Average daylight: 14.5h).
The month with the shortest days is December (Average daylight: 9.8h).

  • Average sunshine in December: 5.3h

The month with the most sunshine is July (Average sunshine: 10.8h).
The month with the least sunshine is December (Average sunshine: 5.3h).

[Resources]

Average sunshine days in December
Mountain Island, NC

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).

[Resources]

Average UV index in December
Mountain Island, NC

Average UV index in December - Mountain Island, NC
  • Average UV index in December: 2

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January and December (UV index 2).

[Resources]

Average cloud cover in December
Mountain Island, NC

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).
Months with the least cloud cover are June and July (Cloud cover 30).

[Resources]

Average visibility in December
Mountain Island, NC

Average visibility in December - Mountain Island, NC
  • Average visibility in December: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location