December weather forecastNorfolk, CT
December
Weather in December
December, the first month of the winter in Norfolk, is also an icy month, with an average temperature fluctuating between 25.3°F (-3.7°C) and 36.1°F (2.3°C).Temperature
December brings a decrease in the average high-temperature, falling from November's chilly 46.4°F (8°C) to a cold 36.1°F (2.3°C). Norfolk's nighttime temperature in December drops to an average of 25.3°F (-3.7°C).Humidity
In December, the average relative humidity in Norfolk is 81%.Rainfall
The months with the most rainfall in Norfolk are October and December, with an average 3.31" (84mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Norfolk, Connecticut, during December, snow falls for 7.7 days and regularly aggregates up to 4.88" (124mm) of snow. In Norfolk, during the entire year, snow falls for 45.3 days and aggregates up to 25.63" (651mm) of snow.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 Norfolk, Connecticut, sunrise is at 7:01 am and sunset at 4:22 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:31 pm EST.
Sunshine
In Norfolk, the average sunshine in December is 4.5h.UV index
The months with the lowest UV index in Norfolk, Connecticut, 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 low threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Norfolk, CT
- Average high temperature in December: 36.1°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.4°F).
- Average low temperature in December: 25.3°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in December
Norfolk, 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
Norfolk, CT
- Average wind speed in December: 8.1mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in December
Norfolk, CT
- Average humidity in December: 81%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (74%).
Average rainfall in December
Norfolk, CT
- Average rainfall in December: 3.31"
The wettest months (with the highest rainfall) are October and December (3.31").
The driest month (with the least rainfall) is September (2.09").
Average rainfall days in December
Norfolk, CT
- Average rainfall days in December: 10.4 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is February (7.1 days).
Average snowfall in December
Norfolk, CT
- Average snowfall in December: 4.88"
The month with the highest snowfall is February (6.38").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Norfolk, CT
- Average snowfall days in December: 7.7 days
The month with the highest number of snowfall days is February (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Norfolk, CT
- Average daylight in December: 9h and 12min
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 30min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in December
Norfolk, CT
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is January (16.8 days).
The month with the least sunshine days is June (11.4 days).
Average UV index in December
Norfolk, CT
- Average UV index in December: 2
The month with the highest UV index is June (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
Norfolk, CT
- Average cloud cover in December: 52
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in December
Norfolk, CT
- Average visibility in December: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
