December weather forecast and climate
Saint Helena, NC

Weather in December

The first month of the winter, December, is still a mild month in Saint Helena, North Carolina, with temperature in the range of an average high of 57.2°F (14°C) and an average low of 41.9°F (5.5°C).

Temperature

In Saint Helena, North Carolina, the average high-temperature in December slightly decreases, from an enjoyable 63.1°F (17.3°C) in November, to a mild 57.2°F (14°C). In Saint Helena, in December, the average low-temperature is 41.9°F (5.5°C).

Humidity

The average relative humidity in Saint Helena is 78%.

Rainfall

In Saint Helena, during 11 rainfall days, 2.64" (67mm) of precipitation is typically accumulated. Throughout the year, there are 165.3 rainfall days, and 34.21" (869mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Saint Helena are January through March and December. December is the first month it typically snows in Saint Helena, North Carolina. Throughout December, in the average 0.1 snowfall days, it receives 0.08" (2mm) of snow. In Saint Helena, during the entire year, snow falls for 2.3 days, and aggregates up to 1.65" (42mm) of snow.

Daylight

December has the shortest days of the year in Saint Helena, North Carolina, with an average of 9.9h of daylight.

Sunshine

Months with the least sunshine are January and December, with an average of 5.5h of sunshine.

UV index

January, February and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a moderate health risk from the exposure to the Sun's UV radiation for the average person.
Note: In December, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in December in Saint Helena?

In Saint Helena, North Carolina, in December, the average high-temperature is 57.2°F (14°C), and the average low-temperature is 41.9°F (5.5°C).

What is the average humidity in December in Saint Helena?

In December, the average relative humidity in Saint Helena, North Carolina, is 78%.

How many days does it rain in December in Saint Helena?

In Saint Helena, North Carolina, during December, the rain falls for 11 days and regularly aggregates up to 2.64" (67mm) of precipitation.

When does it start snowing in Saint Helena?

December is the first month it typically snows in Saint Helena. Throughout December, in the average 0.1 snowfall days, it receives 0.08" (2mm) of snow.

What is the month with the shortest days in Saint Helena?

December has the shortest days of the year in Saint Helena, with an average of 9.9h of daylight.

What is the average length of the day in December in Saint Helena?

The average length of the day in December is 9.9h.

What is the month with the least sunshine in Saint Helena?

Months with the least sunshine are January and December, with an average of 5.5h of sunshine.

How long on average sun shines in December in Saint Helena?

In Saint Helena, the average sunshine in December is 5.5h.

When is the lowest UV index in Saint Helena?

Months with the lowest UV index are January, February and December, with an average maximum UV index of 3.

What is the UV index intensity in December in Saint Helena?

The average daily maximum UV index in December in Saint Helena is 3. A UV Index of 3 to 5 symbolizes a moderate health threat from unprotected exposure to the UV radiation.

Average temperature in December
Saint Helena, NC

Average temperature in December - Saint Helena, NC
  • Average high temperature in December: 57.2°F

The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (52.7°F).

  • Average low temperature in December: 41.9°F

The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (36.7°F).

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Average pressure in December
Saint Helena, NC

Average pressure in December - Saint Helena, NC
  • Average pressure in December: 30.13"

Months with the highest atmospheric pressure are January, November and December (30.13").
The month with the lowest atmospheric pressure is June (29.97").

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Average wind speed in December
Saint Helena, NC

Average wind speed in December - Saint Helena, NC
  • Average wind speed in December: 6.2mph

The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

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Average humidity in December
Saint Helena, NC

Average humidity in December - Saint Helena, NC
  • Average humidity in December: 78%

The month with the highest relative humidity is August (79%).
Months with the lowest relative humidity are January, February, March and April (74%).

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Average rainfall in December
Saint Helena, NC

Average rainfall in December - Saint Helena, NC
  • Average rainfall in December: 2.64"

The wettest month (with the highest rainfall) is August (4.33").
The driest month (with the least rainfall) is January (1.54").

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Average rainfall days in December
Saint Helena, NC

Average rainfall days in December - Saint Helena, NC
  • Average rainfall days in December: 11 days

Months with the highest number of rainy days are July and August (19.8 days).
The month with the least rainy days is November (9.5 days).

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Average snowfall in December
Saint Helena, NC

Average snowfall in December - Saint Helena, NC
  • Average snowfall in December: 0.08"

The month with the highest snowfall is February (0.83").
Months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in December
Saint Helena, NC

Average snowfall days in December - Saint Helena, NC
  • Average snowfall days in December: 0.1 days

The month with the highest number of snowfall days is January (1 days).
Months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Saint Helena, NC

Average daylight in December / Average sunshine in December - Saint Helena, NC
  • Average daylight in December: 9.9h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in December: 5.5h

The month with the most sunshine is July (Average sunshine: 10.6h).
Months with the least sunshine are January and December (Average sunshine: 5.5).

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Average sunshine days in December
Saint Helena, NC

Average sunshine days in December - Saint Helena, NC
  • Average sunshine days in December: 18.5 days

The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is July (8.1 days).

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Average UV index in December
Saint Helena, NC

Average UV index in December - Saint Helena, NC
  • Average UV index in December: 3

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, February and December (UV index 3).

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Average cloud cover in December
Saint Helena, NC

Average cloud cover in December - Saint Helena, NC
  • Average cloud cover in December: 42

The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in December
Saint Helena, NC

Average visibility in December - Saint Helena, 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).

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