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
A shift in the average high-temperature occurs in December, reducing from a fresh 51.1°F (10.6°C) in November to a cold 41.9°F (5.5°C). West Mystic in December experiences a minor decline in temperature, with an average low of 33.4°F (0.8°C) at night.Humidity
The average relative humidity in December in West Mystic is 75%.Rainfall
The month with the most rainfall is December, when the rain falls for 13.2 days and typically aggregates up to 3.86" (98mm) of precipitation.Snowfall
Months with snowfall in West Mystic are January through May, November and December. In West Mystic, during December, snow falls for 4.5 days and regularly aggregates up to 1.22" (31mm) of snow. Throughout the year, in West Mystic, there are 23.4 snowfall days, and 7.48" (190mm) of snow is accumulated.Daylight
December has the shortest days of the year in West Mystic, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 6:55 am and sunset at 4:19 pm. On the last day of December, in West Mystic, sunrise is at 7:13 am and sunset at 4:28 pm EST.
Sunshine
December has the least sunshine of the year in West Mystic, with an average of 4.8h of sunshine.UV index
The months with the lowest UV index in West Mystic, Connecticut, are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the average person.Note: A daily maximum UV index of 2 in December translates 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. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
How cold is it in West Mystic in December?
What is the average humidity in December in West Mystic?
What is the rainiest month in West Mystic?
How many days does it rain in December in West Mystic?
How many days does it snow in December in West Mystic?
What is the month with the shortest days in West Mystic?
What is the average length of the day in December in West Mystic?
When is the sunrise / sunset in December in West Mystic?
What is the month with the least sunshine in West Mystic?
How many hours of sunshine does West Mystic have in December?
What is the month with the lowest UV index in West Mystic?
What is the UV index intensity in December in West Mystic?
Average temperature in December
West Mystic, CT
- Average high temperature in December: 41.9°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in December: 33.4°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).
Average pressure in December
West Mystic, CT
- 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 (29.93"Hg).
Average wind speed in December
West Mystic, CT
- Average wind speed in December: 12mph
The windiest month (with the highest average wind speed) is January (12.4mph).
The calmest months (with the lowest average wind speed) are July and August (8.1mph).
Average humidity in December
West Mystic, CT
- Average humidity in December: 75%
The months with the highest relative humidity are June and July (80%).
The months with the lowest relative humidity are January, March, April and November (74%).
Average rainfall in December
West Mystic, CT
- Average rainfall in December: 3.86"
The wettest month (with the highest rainfall) is December (3.86").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in December
West Mystic, CT
- Average rainfall days in December: 13.2 days
The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is February (9.6 days).
Average snowfall in December
West Mystic, CT
- Average snowfall in December: 1.22"
The month with the highest snowfall is March (2.36").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
West Mystic, CT
- Average snowfall days in December: 4.5 days
The month with the highest number of snowfall days is February (6.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
West Mystic, CT
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 4h and 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in December
West Mystic, CT
- Average sunshine days in December: 14.3 days
The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is June (11.9 days).
Average UV index in December
West Mystic, CT
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
West Mystic, CT
- Average cloud cover in December: 48
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
West Mystic, CT
- 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).
West Mystic, Connecticut, USA
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