December weather forecastDurham, CT
December
Weather in December
December, the first month of the winter in Durham, is also a wintry month, with an average temperature varying between 29.3°F (-1.5°C) and 39.9°F (4.4°C).Temperature
The onset of December entails a temperature shift, as the average high-temperature decreases from a frosty 49.6°F (9.8°C) in November to a cold 39.9°F (4.4°C). During the month of December, the temperature falls to an average of 29.3°F (-1.5°C).Humidity
In December, the average relative humidity is 77%.Rainfall
The month with the most rainfall is December, when the rain falls for 10.8 days and typically aggregates up to 3.74" (95mm) of precipitation.Snowfall
Months with snowfall are January through May, November and December. In Durham, in December, snow falls for 5.9 days, with typically accumulated 3.5" (89mm) of snow. In Durham, during the entire year, snow falls for 31.7 days and aggregates up to 17.2" (437mm) 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 4:21 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 4:31 pm EST.
Sunshine
In Durham, the average sunshine in December is 4.7h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index, 1 in December, converts into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Durham, CT
- Average high temperature in December: 39.9°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (34°F).
- Average low temperature in December: 29.3°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).
Average pressure in December
Durham, CT
- Average pressure in December: 30.05"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
Durham, CT
- Average wind speed in December: 8.1mph
The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in December
Durham, CT
- Average humidity in December: 77%
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (71%).
Average rainfall in December
Durham, CT
- Average rainfall in December: 3.74"
The wettest month (with the highest rainfall) is December (3.74").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in December
Durham, CT
- Average rainfall days in December: 10.8 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in December
Durham, CT
- Average snowfall in December: 3.5"
The month with the highest snowfall is March (4.33").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Durham, CT
- Average snowfall days in December: 5.9 days
The month with the highest number of snowfall days is February (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Durham, 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 42min
The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Durham, CT
- Average sunshine days in December: 15.2 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is June (11.5 days).
Average UV index in December
Durham, 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
Durham, 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 35).
Average visibility in December
Durham, CT
- Average visibility in December: 6mi
The months with the highest visibility are January, March, April, August, October, November and December (6mi).
The months with the lowest visibility are February, May, June, July and September (5mi).
