December weather forecastPlymouth, ME
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Plymouth, Maine, with an average temperature fluctuating between 20.3°F (-6.5°C) and 31.1°F (-0.5°C).Temperature
December involves a decrease in temperature, down from an icy 42.6°F (5.9°C) in November to a subzero cold 31.1°F (-0.5°C). During the month of December, the temperature generally drops to a low average of 20.3°F (-6.5°C).Humidity
In December, the average relative humidity is 82%.Rainfall
In December, in Plymouth, Maine, the rain falls for 9.7 days. Throughout December, 3.27" (83mm) of precipitation is accumulated. In Plymouth, during the entire year, the rain falls for 149.1 days and collects up to 31.22" (793mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Plymouth, during December, snow falls for 10.7 days and regularly aggregates up to 7.6" (193mm) of snow. Throughout the year, in Plymouth, there are 58.6 snowfall days, and 42.32" (1075mm) of snow is accumulated.Daylight
The month with the shortest days in Plymouth is December, with an average of 8h and 54min of daylight.On the first day of December, sunrise is at 6:54 am and sunset at 3:57 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 4:06 pm EST.
Sunshine
The average sunshine in December in Plymouth is 4.4h.UV index
In Plymouth, Maine, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In December, the maximum UV index of 2 transforms into these recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Opt for tightly woven and loose clothing to enhance protection from the Sun. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Plymouth, ME
- Average high temperature in December: 31.1°F
The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is January (25.3°F).
- Average low temperature in December: 20.3°F
The month with the highest average low temperature is July (56.5°F).
The coldest month (with the lowest average low temperature) is January (11.8°F).
Average pressure in December
Plymouth, ME
- Average pressure in December: 30.01"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
Plymouth, ME
- Average wind speed in December: 7.3mph
The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Plymouth, ME
- Average humidity in December: 82%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April, May and November (78%).
Average rainfall in December
Plymouth, ME
- Average rainfall in December: 3.27"
The wettest months (with the highest rainfall) are April and October (3.31").
The driest month (with the least rainfall) is July (1.77").
Average rainfall days in December
Plymouth, ME
- Average rainfall days in December: 9.7 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is January (7 days).
Average snowfall in December
Plymouth, ME
- Average snowfall in December: 7.6"
The month with the highest snowfall is January (9.49").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Plymouth, ME
- Average snowfall days in December: 10.7 days
The month with the highest number of snowfall days is February (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Plymouth, ME
- Average daylight in December: 8h and 54min
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 24min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in December
Plymouth, ME
- Average sunshine days in December: 14.5 days
The month with the most sunshine days is September (16.7 days).
The month with the least sunshine days is April (11.2 days).
Average UV index in December
Plymouth, ME
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in December
Plymouth, ME
- Average cloud cover in December: 52
The months with the most cloud cover are February, March and April (Cloud cover 54).
The months with the least cloud cover are August and September (Cloud cover 39).
Average visibility in December
Plymouth, ME
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
