December weather forecastGrand Isle Station, VT
December
Weather in December
December, the first month of the winter in Grand Isle Station, is also a subzero cold month, with an average temperature varying between 20.7°F (-6.3°C) and 30.6°F (-0.8°C).Temperature
Grand Isle Station's December weather shows a moderate shift in high-temperatures, falling from November's icy 41.9°F (5.5°C) to a subzero cold 30.6°F (-0.8°C). Grand Isle Station records an average temperature drop to a still freezing cold 20.7°F (-6.3°C) in December.Humidity
In Grand Isle Station, the average relative humidity in December is 84%.Rainfall
In December, the rain falls for 12.3 days. Throughout December, 2.32" (59mm) of precipitation is accumulated. In Grand Isle Station, during the entire year, the rain falls for 176.9 days and collects up to 29.88" (759mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Grand Isle Station, Vermont, in December, during 16.1 snowfall days, 6.34" (161mm) of snow is typically accumulated. Throughout the year, there are 81.9 snowfall days, and 36.77" (934mm) of snow is accumulated.Daylight
With an average of 8h and 54min of daylight, December has the shortest days of the year in Grand Isle Station.On the first day of the month, sunrise is at 7:10 am and sunset at 4:14 pm. On the last day of December, sunrise is at 7:30 am and sunset at 4:22 pm EST.
Sunshine
In Grand Isle Station, the average sunshine in December is 3.7h.UV index
The month with the lowest UV index in Grand Isle Station is December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The average daily UV index of 1 in December transforms into the following instructions:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Grand Isle Station, VT
- Average high temperature in December: 30.6°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 (24.3°F).
- Average low temperature in December: 20.7°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (12°F).
Average pressure in December
Grand Isle Station, VT
- Average pressure in December: 30.04"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Grand Isle Station, VT
- Average wind speed in December: 7.4mph
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 (6.1mph).
Average humidity in December
Grand Isle Station, VT
- Average humidity in December: 84%
The months with the highest relative humidity are January and February (87%).
The months with the lowest relative humidity are April and May (76%).
Average rainfall in December
Grand Isle Station, VT
- Average rainfall in December: 2.32"
The wettest month (with the highest rainfall) is June (3.23").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in December
Grand Isle Station, VT
- Average rainfall days in December: 12.3 days
The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is January (9.4 days).
Average snowfall in December
Grand Isle Station, VT
- Average snowfall in December: 6.34"
The month with the highest snowfall is February (9.49").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Grand Isle Station, VT
- Average snowfall days in December: 16.1 days
The month with the highest number of snowfall days is January (19.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Grand Isle Station, VT
- 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: 3h and 42min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 24min).
Average sunshine days in December
Grand Isle Station, VT
- Average sunshine days in December: 8.3 days
The month with the most sunshine days is September (15.3 days).
The month with the least sunshine days is February (6.5 days).
Average UV index in December
Grand Isle Station, VT
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Grand Isle Station, VT
- Average cloud cover in December: 63
The month with the most cloud cover is February (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Grand Isle Station, VT
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (4mi).
