December weather forecastNorth Haven, CT
December
Weather in December
December, the first month of the winter in North Haven, is also a wintry month, with an average temperature varying between 30.4°F (-0.9°C) and 40.3°F (4.6°C).Temperature
Setting in of December comes with a decrease in the average high-temperature, moving from a frosty 49.5°F (9.7°C) in November to a cold 40.3°F (4.6°C). December nights in North Haven cool down to an average low-temperature of 30.4°F (-0.9°C).Humidity
The average relative humidity in December in North Haven is 76%.Rainfall
In North Haven, in December, during 9.4 rainfall days, 1.46" (37mm) of precipitation is typically accumulated. In North Haven, Connecticut, during the entire year, the rain falls for 134.2 days and collects up to 15.12" (384mm) of precipitation.Snowfall
January through May, November and December are months with snowfall. In December, it is snowing for 3.3 days. Throughout December, 0.83" (21mm) of snow is accumulated. Throughout the year, in North Haven, there are 20.5 snowfall days, and 4.02" (102mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of December in North Haven, sunrise is at 6:58 am and sunset at 4:22 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 4:32 pm EST.
Sunshine
In North Haven, the average sunshine in December is 4.8h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The average daily UV index of 2 in December transforms into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Stay sun-safe with clothing that is both closely woven and worn loosely. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
North Haven, CT
- Average high temperature in December: 40.3°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (34.5°F).
- Average low temperature in December: 30.4°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in December
North Haven, 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
North Haven, CT
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in December
North Haven, CT
- Average humidity in December: 76%
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
North Haven, CT
- Average rainfall in December: 1.46"
The wettest month (with the highest rainfall) is July (1.69").
The driest month (with the least rainfall) is February (0.79").
Average rainfall days in December
North Haven, CT
- Average rainfall days in December: 9.4 days
The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is January (7.2 days).
Average snowfall in December
North Haven, CT
- Average snowfall in December: 0.83"
The month with the highest snowfall is February (1.14").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
North Haven, CT
- Average snowfall days in December: 3.3 days
The month with the highest number of snowfall days is February (6.7 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
North Haven, 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 48min
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 42min).
Average sunshine days in December
North Haven, CT
- Average sunshine days in December: 18.4 days
The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is June (13.2 days).
Average UV index in December
North Haven, 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
North Haven, 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 31).
Average visibility in December
North Haven, CT
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
