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
In the transition to December, Newcastle observes a drop in the average high-temperature, moving from a chilly 45°F (7.2°C) in November to an icy 35.2°F (1.8°C). During December, Newcastle experiences an average low-temperature of 25.9°F (-3.4°C) at night.Humidity
The average relative humidity in December is 78%.Rainfall
The month with the most rainfall is December, when the rain falls for 11.4 days and typically aggregates up to 3.27" (83mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Newcastle, Maine, in December, snow falls for 7.8 days, with typically accumulated 2.99" (76mm) of snow. In Newcastle, Maine, during the entire year, snow falls for 40 days and aggregates up to 18.27" (464mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 0min of daylight.On the first day of December in Newcastle, sunrise is at 6:53 am and sunset at 4:01 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 4:10 pm EST.
Sunshine
February and December, with an average of 4.6h of sunshine, are months with the least sunshine in Newcastle.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 2 during December translates into the following guidance:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is December in Newcastle?
What is the average humidity in December in Newcastle?
What is the rainiest month in Newcastle?
How much does it rain in Newcastle in December?
How many days does it snow in December in Newcastle?
What is the month with the shortest days in Newcastle?
What is the average length of the day in December in Newcastle?
When is the sunrise / sunset in December in Newcastle?
What are the months with the least sunshine in Newcastle?
How many hours of sunshine does Newcastle have in December?
When is the lowest UV index in Newcastle?
How high is the UV index in December in Newcastle?
Average temperature in December
Newcastle, ME
- Average high temperature in December: 35.2°F
The warmest month (with the highest average high temperature) is August (72.7°F).
The month with the lowest average high temperature is January (29.8°F).
- Average low temperature in December: 25.9°F
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in December
Newcastle, ME
- Average pressure in December: 30"Hg
The month with the highest atmospheric pressure is September (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Newcastle, ME
- Average wind speed in December: 11mph
The windiest month (with the highest average wind speed) is January (11.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in December
Newcastle, ME
- Average humidity in December: 78%
The months with the highest relative humidity are June and July (83%).
The month with the lowest relative humidity is November (76%).
Average rainfall in December
Newcastle, ME
- Average rainfall in December: 3.27"
The wettest month (with the highest rainfall) is December (3.27").
The driest month (with the least rainfall) is July (1.57").
Average rainfall days in December
Newcastle, ME
- Average rainfall days in December: 11.4 days
The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in December
Newcastle, ME
- Average snowfall in December: 2.99"
The month with the highest snowfall is January (4.37").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Newcastle, ME
- Average snowfall days in December: 7.8 days
The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Newcastle, ME
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).
Average sunshine days in December
Newcastle, ME
- Average sunshine days in December: 13.5 days
The month with the most sunshine days is September (18.3 days).
The month with the least sunshine days is April (11.4 days).
Average UV index in December
Newcastle, ME
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Newcastle, ME
- Average cloud cover in December: 51
The months with the most cloud cover are February, March, April and December (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
Newcastle, ME
- 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).
Newcastle, Maine, USA
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