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
December's arrival comes with a decrease in the average high-temperature, moving from an icy 39.4°F (4.1°C) in November to a freezing cold 27.9°F (-2.3°C). In East Calais, the December nights cool down to an average low of 18.3°F (-7.6°C).Humidity
In December, the average relative humidity in East Calais is 87%.Rainfall
In East Calais, during December, the rain falls for 4.7 days and regularly aggregates up to 0.47" (12mm) of precipitation. In East Calais, during the entire year, the rain falls for 72.5 days and collects up to 5.75" (146mm) of precipitation.Snowfall
Months with snowfall in East Calais are January through May, October through December. In East Calais, in December, during 10.9 snowfall days, 1.34" (34mm) of snow is typically accumulated. Throughout the year, in East Calais, there are 64.9 snowfall days, and 9.06" (230mm) of snow is accumulated.Daylight
December has the shortest days of the year in East Calais, with an average of 8h and 54min of daylight.On the first day of December, sunrise is at 7:06 am and sunset at 4:11 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:20 pm EST.
Sunshine
In East Calais, the average sunshine in December is 2.8h.UV index
The months with the lowest UV index in East Calais are January, February, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index of 1 during December leads to these instructions:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is December in East Calais?
What is the average humidity in December in East Calais?
How much does it rain in East Calais in December?
How many days does it snow in December in East Calais?
What is the month with the shortest days in East Calais?
How many hours of daylight does East Calais have in December?
What time are sunrise and sunset in December in East Calais?
How long on average sun shines in December in East Calais?
What are the months with the lowest UV index in East Calais?
How high is the UV index in December in East Calais?
Average temperature in December
East Calais, VT
- Average high temperature in December: 27.9°F
The warmest month (with the highest average high temperature) is July (76.5°F).
The month with the lowest average high temperature is January (22.6°F).
- Average low temperature in December: 18.3°F
The month with the highest average low temperature is July (55.8°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).
Average pressure in December
East Calais, 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
East Calais, VT
- Average wind speed in December: 6.5mph
The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
East Calais, VT
- Average humidity in December: 87%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (77%).
Average rainfall in December
East Calais, VT
- Average rainfall in December: 0.47"
The wettest month (with the highest rainfall) is October (0.63").
The driest month (with the least rainfall) is September (0.31").
Average rainfall days in December
East Calais, VT
- Average rainfall days in December: 4.7 days
The month with the highest number of rainy days is July (9.3 days).
The month with the least rainy days is February (2 days).
Average snowfall in December
East Calais, VT
- Average snowfall in December: 1.34"
The month with the highest snowfall is February (1.5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
East Calais, VT
- Average snowfall days in December: 10.9 days
The month with the highest number of snowfall days is February (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
East Calais, 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 54min).
- Average sunshine in December: 2h and 5min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The months with the least sunshine are January and February (Average sunshine: 2h and 30min).
Average sunshine days in December
East Calais, VT
- Average sunshine days in December: 20.2 days
The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is July (17.6 days).
Average UV index in December
East Calais, 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, November and December (UV index 1).
Average cloud cover in December
East Calais, VT
- Average cloud cover in December: 73
The months with the most cloud cover are January and February (Cloud cover 76).
The month with the least cloud cover is July (Cloud cover 39).
Average visibility in December
East Calais, VT
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are January, February, March and September (4mi).
East Calais, Vermont, USA
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