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 decrease of average high-temperatures is mild in December, with a decline from a cold 41.5°F (5.3°C) in November to a subzero cold 29.8°F (-1.2°C). An average low-temperature of 19.9°F (-6.7°C) is common during the nights of December.Humidity
The average relative humidity in December is 85%.Rainfall
In Swanton, during December, the rain falls for 10.5 days and regularly aggregates up to 2.56" (65mm) of precipitation. In Swanton, during the entire year, the rain falls for 167.9 days and collects up to 31.89" (810mm) of precipitation.Snowfall
Months with snowfall in Swanton are January through May, October through December. In Swanton, Vermont, in December, snow falls for 16.5 days, with typically accumulated 7.72" (196mm) of snow. Throughout the year, there are 87.5 snowfall days, and 45.98" (1168mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 8h and 48min of daylight.On the first day of December, sunrise is at 7:10 am and sunset at 4:12 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 4:21 pm EST.
Sunshine
The average sunshine in December is 3.4h.UV index
January, February and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 1 during December leads to these advisories:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index?
What is the UV index reading in December in Swanton?
Average temperature in December
Swanton, VT
- Average high temperature in December: 29.8°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (23.7°F).
- Average low temperature in December: 19.9°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in December
Swanton, VT
- Average pressure in December: 30.04"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Swanton, VT
- Average wind speed in December: 7mph
The windiest month (with the highest average wind speed) is April (8mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in December
Swanton, VT
- Average humidity in December: 85%
The months with the highest relative humidity are January and February (89%).
The months with the lowest relative humidity are April and May (76%).
Average rainfall in December
Swanton, VT
- Average rainfall in December: 2.56"
The wettest month (with the highest rainfall) is June (3.31").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in December
Swanton, VT
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is June (19.1 days).
The month with the least rainy days is February (7.4 days).
Average snowfall in December
Swanton, VT
- Average snowfall in December: 7.72"
The month with the highest snowfall is February (10.91").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Swanton, VT
- Average snowfall days in December: 16.5 days
The month with the highest number of snowfall days is January (20.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Swanton, VT
- 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 48min).
- Average sunshine in December: 3h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 2h and 54min).
Average sunshine days in December
Swanton, VT
- Average sunshine days in December: 9.2 days
The month with the most sunshine days is September (15.8 days).
The month with the least sunshine days is February (6.4 days).
Average UV index in December
Swanton, 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 January, February and December (UV index 1).
Average cloud cover in December
Swanton, VT
- Average cloud cover in December: 66
The month with the most cloud cover is February (Cloud cover 72).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility in December
Swanton, VT
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August and September (6mi).
The months with the lowest visibility are January and February (4mi).
Swanton, Vermont, USA
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