Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average sea temperature in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
Marblehead's transition into December involves a shift in temperature, receding from a frosty 49.3°F (9.6°C) in November to a cold 39.9°F (4.4°C). In December, the recorded average low-temperature is a subzero cold 30.6°F (-0.8°C).Humidity
In Marblehead, the average relative humidity in December is 76%.Rainfall
December is the month with the most rainfall. Rain falls for 10.8 days and accumulates 3.03" (77mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In December, it is snowing for 5.3 days. Throughout December, 3.11" (79mm) of snow is accumulated. In Marblehead, during the entire year, snow falls for 30.7 days and aggregates up to 14.33" (364mm) of snow.Ocean temperature
In Marblehead, in December, the average water temperature is 46°F (7.8°C).Note: One needs to be cautious in 46°F (7.8°C) waters. 55.4°F (13°C) is already forbidding, but sub14°F (-10°C) can seriously disrupt your breathing and lead to a frigid shock, considering one's well-being.
Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 6:54 am and sunset at 4:11 pm. On the last day of December, sunrise is at 7:12 am and sunset at 4:20 pm EST.
Sunshine
With an average of 4.6h of sunshine, December has the least sunshine of the year.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 estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: In December, the maximum UV index of 2 transforms into these recommendations:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in December?
What is the average humidity in December?
What is the wettest month?
How much does it rain in December?
How many days does it snow in December?
How cold is the water in December in Marblehead?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Marblehead, MA
- Average high temperature in December: 39.9°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (34.3°F).
- Average low temperature in December: 30.6°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).
Average pressure in December
Marblehead, MA
- Average pressure in December: 30.03"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Marblehead, MA
- Average wind speed in December: 10.9mph
The windiest month (with the highest average wind speed) is January (11.6mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in December
Marblehead, MA
- Average humidity in December: 76%
The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is April (71%).
Average rainfall in December
Marblehead, MA
- Average rainfall in December: 3.03"
The wettest month (with the highest rainfall) is December (3.03").
The driest month (with the least rainfall) is September (1.46").
Average rainfall days in December
Marblehead, MA
- Average rainfall days in December: 10.8 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in December
Marblehead, MA
- Average snowfall in December: 3.11"
The month with the highest snowfall is February (4.06").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Marblehead, MA
- Average snowfall days in December: 5.3 days
The month with the highest number of snowfall days is January (8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in December
Marblehead, MA
- Average sea temperature in December: 45.9°F
The best month for swimming (with the highest average sea temperature) is August (66.4°F).
The coldest month (with the lowest average sea temperature) is March (38.8°F).
Average daylight in December /
Average sunshine in December
Marblehead, MA
- Average daylight in December: 9h and 1min
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 6min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).
Average sunshine days in December
Marblehead, MA
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is September (17.5 days).
The month with the least sunshine days is April (13.3 days).
Average UV index in December
Marblehead, MA
- Average UV index in December: 2
The months with the highest UV index are 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
Marblehead, MA
- Average cloud cover in December: 49
The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Marblehead, 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).
Marblehead, Massachusetts, USA
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