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
In December, the meteorological conditions alter, with the average high-temperature shifting from a chilly 48.4°F (9.1°C) in November to a wintry 38.5°F (3.6°C). An average low-temperature of 28°F (-2.2°C) is observed during December nights in Southbury.Humidity
The average relative humidity in December in Southbury is 79%.Rainfall
December is the month with the most rainfall in Southbury, Connecticut. Rain falls for 12.1 days and accumulates 3.9" (99mm) of precipitation.Snowfall
January through May, November and December are months with snowfall. In Southbury, Connecticut, in December, during 6.4 snowfall days, 3.23" (82mm) of snow is typically accumulated. Throughout the year, there are 34.8 snowfall days, and 17.48" (444mm) of snow is accumulated.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of December in Southbury, sunrise is at 7:00 am and sunset at 4:23 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:33 pm EST.
Sunshine
In December, the average sunshine in Southbury is 4.6h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Frequently asked questions
How cold is it in Southbury in December?
What is the average humidity in December in Southbury?
What is the wettest month in Southbury?
How many days does it rain in December in Southbury?
How much does it snow in Southbury in December?
What is the month with the shortest days in Southbury?
What is the average length of the day in December in Southbury?
When are sunrise and sunset in December in Southbury?
How long on average sun shines in December in Southbury?
When is the lowest UV index in Southbury?
What is the UV index reading in December in Southbury?
Average temperature in December
Southbury, CT
- Average high temperature in December: 38.5°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (33.1°F).
- Average low temperature in December: 28°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21.4°F).
Average pressure in December
Southbury, CT
- Average pressure in December: 30.06"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
Southbury, CT
- Average wind speed in December: 7.6mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Southbury, CT
- Average humidity in December: 79%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
Southbury, CT
- Average rainfall in December: 3.9"
The wettest month (with the highest rainfall) is December (3.9").
The driest month (with the least rainfall) is September (2.28").
Average rainfall days in December
Southbury, CT
- Average rainfall days in December: 12.1 days
The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is January (9.5 days).
Average snowfall in December
Southbury, CT
- Average snowfall in December: 3.23"
The month with the highest snowfall is February (4.8").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Southbury, CT
- Average snowfall days in December: 6.4 days
The month with the highest number of snowfall days is February (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Southbury, 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 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in December
Southbury, CT
- Average sunshine days in December: 14.3 days
The month with the most sunshine days is November (17 days).
The months with the least sunshine days are May and June (10.3 days).
Average UV index in December
Southbury, 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
Southbury, CT
- Average cloud cover in December: 50
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in December
Southbury, CT
- Average visibility in December: 6mi
The months with the highest visibility are April, October, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August and September (5mi).
Southbury, Connecticut, USA
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