December weather forecastStonington, CT
December
Weather in December
December marks the arrival of winter in Stonington, with temperatures dropping significantly. Snowfall shows a noticeable increase compared to November, enhancing the winter feels in the city. The city witnesses its shortest daylight hours during this month, contributing to the cold weather conditions. Stylish winter attire becomes the norm, as locals and tourists alike embrace the winter chill. With New Year's Eve celebrations, the city bids farewell to the year on a high note, anticipating a fresh start with January.Temperature
In Stonington, the average high-temperature in December gently drops from a fresh 51.3°F (10.7°C) in November to a wintry 42.3°F (5.7°C). December nights anticipate an average temperature of 33.4°F (0.8°C), a modest decline from the daytime.Humidity
In Stonington, the average relative humidity in December is 75%.Rainfall
The month with the most rainfall is December, when the rain falls for 13.4 days and typically aggregates up to 3.86" (98mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Stonington, in December, snow falls for 4.5 days, with typically accumulated 1.18" (30mm) of snow. Throughout the year, there are 24.7 snowfall days, and 7.87" (200mm) of snow is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 6:54 am and sunset at 4:19 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 4:28 pm EST.
Sunshine
The months with the least sunshine are February and December, with an average of 4.9h of sunshine.UV index
The months with the lowest UV index are January through March and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: During December, 2 as the daily maximum UV index converts into the following advice:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Stonington, CT
- Average high temperature in December: 42.3°F
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (36.5°F).
- Average low temperature in December: 33.4°F
The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).
Average pressure in December
Stonington, CT
- Average pressure in December: 30.04"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
Stonington, CT
- Average wind speed in December: 11.9mph
The windiest month (with the highest average wind speed) is January (12.4mph).
The calmest month (with the lowest average wind speed) is August (8.1mph).
Average humidity in December
Stonington, CT
- Average humidity in December: 75%
The month with the highest relative humidity is June (81%).
The months with the lowest relative humidity are January, March, April and November (74%).
Average rainfall in December
Stonington, 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
Stonington, CT
- Average rainfall days in December: 13.4 days
The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is February (10.1 days).
Average snowfall in December
Stonington, CT
- Average snowfall in December: 1.18"
The month with the highest snowfall is March (2.44").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Stonington, CT
- Average snowfall days in December: 4.5 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Stonington, CT
- Average daylight in December: 9h and 18min
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 18min).
- Average sunshine in December: 4h and 54min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days in December
Stonington, CT
- Average sunshine days in December: 14.2 days
The month with the most sunshine days is November (16.5 days).
The months with the least sunshine days are June and July (11.7 days).
Average UV index in December
Stonington, 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 and December (UV index 2).
Average cloud cover in December
Stonington, CT
- Average cloud cover in December: 47
The months with the most cloud cover are February, March and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
Stonington, 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).
