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 sea temperature 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 December, the average high-temperature decreases from a frosty 44.4°F (6.9°C) in November to a wintry 33.3°F (0.7°C). December's nights in Winterport observe an average temperature of 22.8°F (-5.1°C).Humidity
In December, the average relative humidity in Winterport is 80%.Rainfall
In Winterport, during December, the rain falls for 10.6 days and regularly aggregates up to 2.68" (68mm) of precipitation. In Winterport, during the entire year, the rain falls for 144.3 days and collects up to 24.61" (625mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 8.9 days. Throughout December, 2.8" (71mm) of snow is accumulated. In Winterport, during the entire year, snow falls for 46.8 days and aggregates up to 19.61" (498mm) of snow.Ocean temperature
In Winterport, the average seawater temperature in December is 44.2°F (6.8°C).Note: Swimming in 44.2°F (6.8°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.
Daylight
With an average of 8h and 54min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:52 am and sunset at 3:56 pm. On the last day of December, in Winterport, sunrise is at 7:12 am and sunset at 4:05 pm EST.
Sunshine
In Winterport, Maine, the average sunshine in December is 4.4h.UV index
The months with the lowest UV index in Winterport are January through March, October through December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In December, the maximum UV index of 2 transforms into these recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Winterport?
What is the average humidity in December in Winterport?
How much does it rain in Winterport in December?
How many days does it snow in December in Winterport?
How cold is the water in December in Winterport?
What is the month with the shortest days in Winterport?
How many hours of daylight does Winterport have in December?
What time are sunrise and sunset in December in Winterport?
How long on average sun shines in December in Winterport?
What are the months with the lowest UV index in Winterport?
How high is the UV index in December in Winterport?
Average temperature in December
Winterport, ME
- Average high temperature in December: 33.3°F
The warmest month (with the highest average high temperature) is July (76.1°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in December: 22.8°F
The month with the highest average low temperature is July (57.6°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).
Average pressure in December
Winterport, ME
- Average pressure in December: 29.99"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
Winterport, ME
- Average wind speed in December: 8.3mph
The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
Winterport, ME
- Average humidity in December: 80%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are April and November (77%).
Average rainfall in December
Winterport, ME
- Average rainfall in December: 2.68"
The wettest month (with the highest rainfall) is April (2.72").
The driest month (with the least rainfall) is July (1.42").
Average rainfall days in December
Winterport, ME
- Average rainfall days in December: 10.6 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (7.6 days).
Average snowfall in December
Winterport, ME
- Average snowfall in December: 2.8"
The month with the highest snowfall is January (4.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Winterport, ME
- Average snowfall days in December: 8.9 days
The month with the highest number of snowfall days is February (10.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in December
Winterport, ME
- Average sea temperature in December: 44.3°F
The best month for swimming (with the highest average sea temperature) is August (57.7°F).
The coldest month (with the lowest average sea temperature) is March (37.5°F).
Average daylight in December /
Average sunshine in December
Winterport, ME
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days in December
Winterport, ME
- Average sunshine days in December: 14.6 days
The month with the most sunshine days is September (18 days).
The month with the least sunshine days is April (11.6 days).
Average UV index in December
Winterport, 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, October, November and December (UV index 2).
Average cloud cover in December
Winterport, ME
- Average cloud cover in December: 52
The months with the most cloud cover are February, March and April (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 39).
Average visibility in December
Winterport, ME
- Average visibility in December: 6mi
The months with the highest visibility are October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August and September (5mi).
Winterport, Maine, USA
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