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
Saint Helena's transition into December involves a gentle shift in temperature, receding from an enjoyable 63.1°F (17.3°C) in November to a still refreshing 57.2°F (14°C). Saint Helena, in the month of December, anticipates a consistent average low-temperature of 41.9°F (5.5°C).Humidity
In Saint Helena, the average relative humidity in December is 78%.Rainfall
In Saint Helena, in December, during 11 rainfall days, 2.64" (67mm) of precipitation is typically accumulated. Throughout the year, in Saint Helena, 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. Throughout December, in the average 0.1 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, there are 2.3 snowfall days, and 1.65" (42mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 54min of daylight.On the first day of December in Saint Helena, sunrise is at 7:00 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 5:11 pm EST.
Sunshine
January and December, with an average of 5.5h of sunshine, are months with the least sunshine in Saint Helena.UV index
The months with the lowest UV index in Saint Helena are January, February and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 3 in December translates into these instructions:
Adopt protective measures - Suggestions to resist sunburn are offered. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
What are December temperatures in Saint Helena?
What is the average humidity in December in Saint Helena?
How much does it rain in Saint Helena in December?
When does it start snowing in Saint Helena?
What is the month with the shortest days in Saint Helena?
What is the average length of the day in December in Saint Helena?
When is the sunrise / sunset in December in Saint Helena?
What are the months with the least sunshine in Saint Helena?
How many hours of sunshine does Saint Helena have in December?
When is the lowest UV index in Saint Helena?
How high is the UV index in December in Saint Helena?
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).
Average pressure in December
Saint Helena, NC
- Average pressure in December: 30.13"Hg
The months with the highest atmospheric pressure are January, November and December (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
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).
Average humidity in December
Saint Helena, NC
- Average humidity in December: 78%
The month with the highest relative humidity is August (79%).
The months with the lowest relative humidity are January, February, March and April (74%).
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").
Average rainfall days in December
Saint Helena, NC
- Average rainfall days in December: 11 days
The 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).
Average snowfall in December
Saint Helena, NC
- Average snowfall in December: 0.08"
The month with the highest snowfall is February (0.83").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
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).
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
Saint Helena, NC
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 5h and 3min
The month with the most sunshine is 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
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).
Average UV index in December
Saint Helena, NC
- Average UV index in December: 3
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
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).
Average visibility in December
Saint Helena, 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).
Saint Helena, North Carolina, USA
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