December weather forecastNorth Truro, MA
December
Weather in December
The first month of the winter, December, is still a chilly month in North Truro, Massachusetts, with an average temperature varying between 43.2°F (6.2°C) and 35.8°F (2.1°C).Temperature
The shift from November to December includes a small decrease in the average high-temperature, from a fresh 50.4°F (10.2°C) to a frosty 43.2°F (6.2°C). A consistent average low-temperature of 35.8°F (2.1°C), with a minor variance from the daytime highs, is noted during the nights of December.Humidity
In December, the average relative humidity is 76%.Rainfall
December is the month with the most rainfall. Rain falls for 12.1 days and accumulates 3.39" (86mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In December, it is snowing for 3.4 days. Throughout December, 0.71" (18mm) of snow is accumulated. In North Truro, during the entire year, snow falls for 20.3 days and aggregates up to 5.39" (137mm) 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 6:49 am and sunset at 4:09 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 4:18 pm EST.
Sunshine
December has the least sunshine of the year, with an average of 4.4h of sunshine.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 value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the average person.Note: The daily high UV index of 2 during December translates into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Direct Sun exposure should be minimized especially during midday when radiation is most intense. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
North Truro, MA
- Average high temperature in December: 43.2°F
The warmest month (with the highest average high temperature) is August (71.8°F).
The month with the lowest average high temperature is January (37.6°F).
- Average low temperature in December: 35.8°F
The month with the highest average low temperature is August (66.7°F).
The coldest month (with the lowest average low temperature) is January (29.8°F).
Average pressure in December
North Truro, MA
- Average pressure in December: 30.02"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
North Truro, MA
- Average wind speed in December: 17.1mph
The windiest month (with the highest average wind speed) is January (17.8mph).
The calmest month (with the lowest average wind speed) is August (10.9mph).
Average humidity in December
North Truro, MA
- Average humidity in December: 76%
The months with the highest relative humidity are June and July (84%).
The month with the lowest relative humidity is November (74%).
Average rainfall in December
North Truro, MA
- Average rainfall in December: 3.39"
The wettest month (with the highest rainfall) is December (3.39").
The driest month (with the least rainfall) is September (2.17").
Average rainfall days in December
North Truro, MA
- Average rainfall days in December: 12.1 days
The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is February (8.6 days).
Average snowfall in December
North Truro, MA
- Average snowfall in December: 0.71"
The month with the highest snowfall is February (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
North Truro, MA
- Average snowfall days in December: 3.4 days
The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
North Truro, MA
- 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 24min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 24min).
Average sunshine days in December
North Truro, MA
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is July (12.6 days).
Average UV index in December
North Truro, MA
- Average UV index in December: 2
The month with the highest UV index is July (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 Truro, MA
- Average cloud cover in December: 53
The month with the most cloud cover is December (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
North Truro, MA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
