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
With the onset of December, Plymouth experiences a modest temperature adjustment, with the average high-temperature receding from an icy 40.8°F (4.9°C) in November to a freezing cold 29.5°F (-1.4°C). The average temperature during December nights dips to 19.8°F (-6.8°C).Humidity
The average relative humidity in December in Plymouth is 84%.Rainfall
In Plymouth, during December, the rain falls for 5.5 days and regularly aggregates up to 1.3" (33mm) of precipitation. In Plymouth, during the entire year, the rain falls for 104.7 days and collects up to 14.88" (378mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Plymouth, in December, snow falls for 12.1 days, with typically accumulated 5.04" (128mm) of snow. Throughout the year, there are 70.7 snowfall days, and 37.6" (955mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 0min of daylight.On the first day of December, sunrise is at 7:04 am and sunset at 4:15 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:24 pm EST.
Sunshine
In December, the average sunshine is 3.6h.UV index
February and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the average person.Note: The UV index of 1 during December translates into the following guidance:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Plymouth have in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Plymouth, VT
- Average high temperature in December: 29.5°F
The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (24.1°F).
- Average low temperature in December: 19.8°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (12.2°F).
Average pressure in December
Plymouth, VT
- Average pressure in December: 30.05"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Plymouth, VT
- Average wind speed in December: 7.1mph
The windiest months (with the highest average wind speed) are January and April (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in December
Plymouth, VT
- Average humidity in December: 84%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are April and May (76%).
Average rainfall in December
Plymouth, VT
- Average rainfall in December: 1.3"
The wettest months (with the highest rainfall) are June and October (1.54").
The driest month (with the least rainfall) is September (0.79").
Average rainfall days in December
Plymouth, VT
- Average rainfall days in December: 5.5 days
The months with the highest number of rainy days are June and July (12.9 days).
The month with the least rainy days is February (2.7 days).
Average snowfall in December
Plymouth, VT
- Average snowfall in December: 5.04"
The month with the highest snowfall is February (7.28").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Plymouth, VT
- Average snowfall days in December: 12.1 days
The month with the highest number of snowfall days is February (13.8 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, VT
- 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: 3h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 6min).
Average sunshine days in December
Plymouth, VT
- Average sunshine days in December: 18 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is February (14 days).
Average UV index in December
Plymouth, VT
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in December
Plymouth, VT
- Average cloud cover in December: 63
The month with the most cloud cover is February (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 38).
Average visibility in December
Plymouth, VT
- Average visibility in December: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
Plymouth, Vermont, USA
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