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
The shift from November to December involves a decrease in the average high-temperature, dropping from a chilly 46.6°F (8.1°C) to a cold 37°F (2.8°C). Throughout the month of December, the nighttime temperature dips to an average of 27.5°F (-2.5°C).Humidity
In December, the average relative humidity is 78%.Rainfall
The months with the most rainfall are June and December, with an average 2.13" (54mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In December, it is snowing for 5.4 days. Throughout December, 3.27" (83mm) of snow is accumulated. Throughout the year, there are 28.5 snowfall days, and 14.25" (362mm) of snow is accumulated.Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 6:56 am and sunset at 4:08 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 4:17 pm EST.
Sunshine
The months with the least sunshine are February and December, with an average of 4.9h of sunshine.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 value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 2 during December translates into the following guidance:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
What is the wettest month?
How much does it rain in South Berwick in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does South Berwick have in December?
When are sunrise and sunset in December?
What are the months with the least sunshine?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
South Berwick, ME
- Average high temperature in December: 37°F
The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in December
South Berwick, ME
- Average pressure in December: 30.03"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
South Berwick, ME
- Average wind speed in December: 10.4mph
The windiest month (with the highest average wind speed) is January (11.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in December
South Berwick, ME
- Average humidity in December: 78%
The months with the highest relative humidity are June and July (80%).
The months with the lowest relative humidity are April and November (75%).
Average rainfall in December
South Berwick, ME
- Average rainfall in December: 2.13"
The wettest months (with the highest rainfall) are June and December (2.13").
The driest month (with the least rainfall) is September (1.26").
Average rainfall days in December
South Berwick, ME
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is July (14.6 days).
The months with the least rainy days are January and February (6.3 days).
Average snowfall in December
South Berwick, ME
- Average snowfall in December: 3.27"
The month with the highest snowfall is February (3.86").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
South Berwick, ME
- Average snowfall days in December: 5.4 days
The month with the highest number of snowfall days is January (7.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
South Berwick, ME
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days in December
South Berwick, ME
- Average sunshine days in December: 18.2 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is July (14.3 days).
Average UV index in December
South Berwick, ME
- Average UV index in December: 2
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
South Berwick, ME
- Average cloud cover in December: 47
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
South Berwick, 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).
South Berwick, Maine, USA
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