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 Plymouth, December is the coldest month, with temperatures averaging a high of 38.7°F (3.7°C) and a low of 28.6°F (-1.9°C).Humidity
In December, the average relative humidity in Plymouth is 77%.Rainfall
In Plymouth, in December, it is raining for 11.5 days, with typically 0.98" (25mm) of accumulated precipitation. In Plymouth, during the entire year, the rain falls for 106.1 days and collects up to 7.76" (197mm) of precipitation.Snowfall
January through March, September, November and December are months with snowfall in Plymouth. In Plymouth, in December, during 3.2 snowfall days, 1.22" (31mm) of snow is typically accumulated. In Plymouth, during the entire year, snow falls for 10.3 days and aggregates up to 6.02" (153mm) of snow.Daylight
December has the shortest days of the year, with an average of 8h and 42min of daylight.On the first day of the month, sunrise is at 7:19 am and sunset at 4:14 pm. On the last day of December, in Plymouth, sunrise is at 7:38 am and sunset at 4:22 pm PST.
Sunshine
The months with the least sunshine in Plymouth are January and December, with an average of 5.4h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Plymouth. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for average individuals.Note: In December, a daily UV index of 2 turns into the following recommendations:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Frequently asked questions
What is the coldest month in Plymouth?
Is December cold in Plymouth?
What is the average humidity in December in Plymouth?
How much does it rain in Plymouth in December?
How many days does it snow in December in Plymouth?
What is the month with the shortest days in Plymouth?
What is the average length of the day in December in Plymouth?
What time are sunrise and sunset in December in Plymouth?
What is the month with the least sunshine in Plymouth?
How long on average sun shines in December in Plymouth?
What are the months with the lowest UV index in Plymouth?
How high is the UV index in December in Plymouth?
Average temperature in December
Plymouth, WA
- Average high temperature in December: 38.7°F
The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is December (38.7°F).
- Average low temperature in December: 28.6°F
The month with the highest average low temperature is August (64.2°F).
The coldest month (with the lowest average low temperature) is December (28.6°F).
Average pressure in December
Plymouth, WA
- Average pressure in December: 30.16"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in December
Plymouth, WA
- Average wind speed in December: 6.2mph
The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is December (6.2mph).
Average humidity in December
Plymouth, WA
- Average humidity in December: 77%
The month with the highest relative humidity is January (79%).
The months with the lowest relative humidity are July and August (36%).
Average rainfall in December
Plymouth, WA
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is March (1.02").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in December
Plymouth, WA
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is March (13.1 days).
The month with the least rainy days is July (3.8 days).
Average snowfall in December
Plymouth, WA
- Average snowfall in December: 1.22"
The month with the highest snowfall is February (2.83").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in December
Plymouth, WA
- Average snowfall days in December: 3.2 days
The month with the highest number of snowfall days is December (3.2 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in December /
Average sunshine in December
Plymouth, WA
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 5h and 2min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).
Average sunshine days in December
Plymouth, WA
- Average sunshine days in December: 15.8 days
The month with the most sunshine days is July (25.3 days).
The month with the least sunshine days is February (14 days).
Average UV index in December
Plymouth, WA
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Plymouth, WA
- Average cloud cover in December: 44
The months with the most cloud cover are January and December (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in December
Plymouth, WA
- 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).
Plymouth, Washington, USA
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