December weather forecastHamden, CT
December
Weather in December
December, the first month of the winter in Hamden, is still a cold month, with temperature in the range of an average high of 40.3°F (4.6°C) and an average low of 30.4°F (-0.9°C).Temperature
The shift from November to December involves a decrease in the average high-temperature, dropping from a frosty 49.5°F (9.7°C) to an icy 40.3°F (4.6°C). In December, Hamden encounters an average low-temperature of 30.4°F (-0.9°C) during the night.Humidity
In December, the average relative humidity in Hamden is 76%.Rainfall
In Hamden, in December, it is raining for 9.4 days, with typically 1.46" (37mm) of accumulated precipitation. In Hamden, during the entire year, the rain falls for 134.2 days and collects up to 15.12" (384mm) of precipitation.Snowfall
Months with snowfall are January through May, November and December. In Hamden, during December, snow falls for 3.3 days and regularly aggregates up to 0.83" (21mm) of snow. In Hamden, during the entire year, snow falls for 20.5 days and aggregates up to 4.02" (102mm) 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, 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 December, the average sunshine in Hamden 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 in Hamden. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum high daily UV index of 2 during December translates into the following directions:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Hamden, 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
Hamden, 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
Hamden, 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
Hamden, 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
Hamden, 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
Hamden, 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
Hamden, 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
Hamden, 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
Hamden, 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
Hamden, 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
Hamden, 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
Hamden, 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
Hamden, 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).
