December weather forecast and climate
Black Mountain, NC

Weather in December

The first month of the winter, December, is still a chilly month in Black Mountain, North Carolina, with temperature in the range of an average high of 48°F (8.9°C) and an average low of 33.3°F (0.7°C).

Temperature

In December, the average high-temperature slightly decreases, from a cool 54.9°F (12.7°C) in November, to a frosty 48°F (8.9°C). In December, in Black Mountain, the average low-temperature is 33.3°F (0.7°C).

Humidity

In Black Mountain, the average relative humidity in December is 77%.

Rainfall

Months with the most rainfall are April and December, with an average 3.07" (78mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall in Black Mountain. December is the month with the most snowfall in Black Mountain, North Carolina. Snow falls for 1.7 days and accumulates 4.37" (111mm) of snow.

Daylight

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

Sunshine

The month with the least sunshine in Black Mountain is December, with an average of 5.6h of sunshine.

UV index

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Black Mountain. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: The daily maximum UV index of 2 in December interpret into the following advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in December in Black Mountain?

The average relative humidity in December is 77%.

What is the rainiest month in Black Mountain?

Months with the most rainfall in Black Mountain are April and December, with an average 3.07" (78mm) of precipitation.

How many days does it rain in December in Black Mountain?

In Black Mountain, during December, the rain falls for 10.6 days and regularly aggregates up to 3.07" (78mm) of precipitation.

What is the snowiest month in Black Mountain?

The month with the most snowfall in Black Mountain is December when snow falls for 1.7 days and typically aggregates up to 4.37" (111mm) of snow.

How much does it snow in Black Mountain in December?

In Black Mountain, North Carolina, in December, snow falls for 1.7 days, with typically accumulated 4.37" (111mm) of snow.

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

The month with the shortest days in Black Mountain is December, with an average of 9.8h of daylight.

What is the average length of the day in December in Black Mountain?

In Black Mountain, North Carolina, the average length of the day in December is 9.8h.

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

December has the least sunshine of the year in Black Mountain, with an average of 5.6h of sunshine.

How many hours of sunshine does Black Mountain have in December?

In December, the average sunshine in Black Mountain is 5.6h.

What is the month with the lowest UV index in Black Mountain?

Months with the lowest UV index in Black Mountain are January, February and December, with an average maximum UV index of 2.

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

The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health threat from unprotected exposure to the UV radiation.

Average temperature in December
Black Mountain, NC

Average temperature in December - Black Mountain, NC
  • Average high temperature in December: 48°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 (43.5°F).

  • Average low temperature in December: 33.3°F

The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).

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Average pressure in December
Black Mountain, NC

Average pressure in December - Black Mountain, 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 (29.99").

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Average wind speed in December
Black Mountain, NC

Average wind speed in December - Black Mountain, NC
  • Average wind speed in December: 5.6mph

The windiest months (with the highest average wind speed) are January, February and April (6.2mph).
The calmest month (with the lowest average wind speed) is August (3.4mph).

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Average humidity in December
Black Mountain, NC

Average humidity in December - Black Mountain, NC
  • Average humidity in December: 77%

Months with the highest relative humidity are May and September (78%).
Months with the lowest relative humidity are January and November (74%).

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Average rainfall in December
Black Mountain, NC

Average rainfall in December - Black Mountain, NC
  • Average rainfall in December: 3.07"

The wettest months (with the highest rainfall) are April and December (3.07").
The driest month (with the least rainfall) is September (1.54").

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Average rainfall days in December
Black Mountain, NC

Average rainfall days in December - Black Mountain, NC
  • Average rainfall days in December: 10.6 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (8.5 days).

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Average snowfall in December
Black Mountain, NC

Average snowfall in December - Black Mountain, NC
  • Average snowfall in December: 4.37"

The month with the highest snowfall is December (4.37").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Black Mountain, NC

Average snowfall days in December - Black Mountain, NC
  • Average snowfall days in December: 1.7 days

The month with the highest number of snowfall days is February (4.2 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Black Mountain, 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: 5.6h

The month with the most sunshine is June (Average sunshine: 10.8h).
The month with the least sunshine is December (Average sunshine: 5.6h).

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Average sunshine days in December
Black Mountain, NC

Average sunshine days in December - Black Mountain, NC
  • Average sunshine days in December: 19.2 days

The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is July (10.4 days).

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Average UV index in December
Black Mountain, NC

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

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

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Average cloud cover in December
Black Mountain, NC

Average cloud cover in December - Black Mountain, NC
  • Average cloud cover in December: 42

Months with the most cloud cover are February and March (Cloud cover 43).
The month with the least cloud cover is June (Cloud cover 30).

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Average visibility in December
Black Mountain, NC

Average visibility in December - Black Mountain, NC
  • Average visibility in December: 5mi

Months with the highest visibility are June, July, August and November (6mi).
Months with the lowest visibility are January, February, March, April, May, September, October and December (5mi).

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