December weather forecastAmston, CT
December
Weather in December
December, the first month of the winter in Amston, is also an icy month, with an average temperature varying between 40.3°F (4.6°C) and 29.7°F (-1.3°C).Temperature
Amston's transition into December involves a shift in temperature, receding from a frosty 49.6°F (9.8°C) in November to a wintry 40.3°F (4.6°C). In Amston, the average nighttime temperature during December is a subzero cold 29.7°F (-1.3°C).Humidity
The average relative humidity in December is 76%.Rainfall
The month with the most rainfall is December, when the rain falls for 6.8 days and typically aggregates up to 1.02" (26mm) of precipitation.Snowfall
Months with snowfall are January through May, November and December. In Amston, in December, snow falls for 4.1 days, with typically accumulated 0.75" (19mm) of snow. Throughout the year, there are 22.3 snowfall days, and 3.82" (97mm) of snow is accumulated.Daylight
The month with the shortest days in Amston is December, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 6:57 am and sunset at 4:19 pm. On the last day of December, sunrise is at 7:16 am and sunset at 4:29 pm EST.
Sunshine
February and December, with an average of 4.6h of sunshine, are months with the least sunshine.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: During December, 1 as the daily maximum UV index converts into the following advice:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Amston, CT
- Average high temperature in December: 40.3°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (34.3°F).
- Average low temperature in December: 29.7°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure in December
Amston, 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
Amston, CT
- Average wind speed in December: 8.3mph
The windiest months (with the highest average wind speed) are January and March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in December
Amston, CT
- Average humidity in December: 76%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (71%).
Average rainfall in December
Amston, CT
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is December (1.02").
The driest month (with the least rainfall) is September (0.35").
Average rainfall days in December
Amston, CT
- Average rainfall days in December: 6.8 days
The month with the highest number of rainy days is July (11.8 days).
The month with the least rainy days is January (5.1 days).
Average snowfall in December
Amston, CT
- Average snowfall in December: 0.75"
The month with the highest snowfall is March (1.26").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Amston, CT
- Average snowfall days in December: 4.1 days
The month with the highest number of snowfall days is February (6.4 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
Amston, CT
- Average daylight in December: 9h and 12min
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 36min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).
Average sunshine days in December
Amston, CT
- Average sunshine days in December: 20.2 days
The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is July (17.1 days).
Average UV index in December
Amston, CT
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Amston, CT
- Average cloud cover in December: 49
The months with the most cloud cover are February and March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Amston, CT
- Average visibility in December: 6mi
The months with the highest visibility are January, March, April, September, October, November and December (6mi).
The months with the lowest visibility are February, May, June, July and August (5mi).
