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
Glastonbury Center observes a minor decrease in the average high-temperature with the arrival of December, falling from November's chilly 48.9°F (9.4°C) to an icy 39°F (3.9°C). During the month of December, Glastonbury Center's nighttime temperature lowers to an average of 28.4°F (-2°C).Humidity
In December, the average relative humidity is 77%.Rainfall
The month with the most rainfall in Glastonbury Center is December, when the rain falls for 11.3 days and typically aggregates up to 3.19" (81mm) of precipitation.Snowfall
Months with snowfall in Glastonbury Center are January through May, November and December. In December, it is snowing for 5.3 days. Throughout December, 2.83" (72mm) of snow is accumulated. In Glastonbury Center, during the entire year, snow falls for 29.1 days and aggregates up to 15.63" (397mm) of snow.Daylight
December has the shortest days of the year in Glastonbury Center, with an average of 9h and 12min of daylight.On the first day of December in Glastonbury Center, sunrise is at 6:58 am and sunset at 4:20 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 4:30 pm EST.
Sunshine
In Glastonbury Center, the average sunshine in December is 4.8h.UV index
The month with the lowest UV index in Glastonbury Center is December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for average individuals.Note: The UV index of 1 during December leads to these advisories:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Frequently asked questions
How cold is December in Glastonbury Center?
What is the average humidity in December in Glastonbury Center?
What is the rainiest month in Glastonbury Center?
How much does it rain in Glastonbury Center in December?
How many days does it snow in December in Glastonbury Center?
What is the month with the shortest days in Glastonbury Center?
How many hours of daylight does Glastonbury Center have in December?
When are sunrise and sunset in December in Glastonbury Center?
How long on average sun shines in December in Glastonbury Center?
When is the lowest UV index in Glastonbury Center?
What is the UV index intensity in December in Glastonbury Center?
Average temperature in December
Glastonbury Center, CT
- Average high temperature in December: 39°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in December: 28.4°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in December
Glastonbury Center, CT
- Average pressure in December: 30.05"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Glastonbury Center, CT
- Average wind speed in December: 7.8mph
The windiest months (with the highest average wind speed) are January and March (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in December
Glastonbury Center, CT
- Average humidity in December: 77%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (70%).
Average rainfall in December
Glastonbury Center, CT
- Average rainfall in December: 3.19"
The wettest month (with the highest rainfall) is December (3.19").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in December
Glastonbury Center, CT
- Average rainfall days in December: 11.3 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is January (9.2 days).
Average snowfall in December
Glastonbury Center, CT
- Average snowfall in December: 2.83"
The month with the highest snowfall is February (4.45").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Glastonbury Center, CT
- Average snowfall days in December: 5.3 days
The month with the highest number of snowfall days is February (8.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Glastonbury Center, CT
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
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 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Glastonbury Center, CT
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is January (17.6 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in December
Glastonbury Center, CT
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Glastonbury Center, CT
- Average cloud cover in December: 48
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Glastonbury Center, CT
- Average visibility in December: 6mi
The months with the highest visibility are January, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are February, May and September (5mi).
Glastonbury Center, Connecticut, USA
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