December weather forecast
Scituate, MA

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Weather in December

December, the first month of the winter in Scituate, is also an icy month, with an average temperature varying between 32.7°F (0.4°C) and 41.2°F (5.1°C).

Temperature

Scituate's weather in December involves a mild decrease in the average high-temperature, moving down slightly from November's chilly 49.8°F (9.9°C) to an icy 41.2°F (5.1°C). In Scituate, the average low-temperature during December nights tends to settle at a still wintry 32.7°F (0.4°C), indicating a slight drop from the daytime peak.

Humidity

In Scituate, the average relative humidity in December is 76%.

Rainfall

In Scituate, during December, the rain falls for 8.1 days and regularly aggregates up to 0.98" (25mm) of precipitation. In Scituate, during the entire year, the rain falls for 119.1 days and collects up to 10.83" (275mm) of precipitation.

Snowfall

Months with snowfall are January through April, November and December. In Scituate, in December, during 4 snowfall days, 0.63" (16mm) of snow is typically accumulated. In Scituate, during the entire year, snow falls for 23.1 days and aggregates up to 2.95" (75mm) of snow.

Ocean temperature

In December, the average ocean temperature is 46.2°F (7.9°C).
Note: Swimming in 46.2°F (7.9°C) can be lethal. Merely spending a few minutes in 55.4°F (13°C) waters feels harsh, and venturing below 50°F (10°C) might disrupt breathing control and bring about cold shock, contingent on individual resilience.

Daylight

The month with the shortest days is December, with an average of 9h and 12min of daylight.
On the first day of December, sunrise is at 6:52 am and sunset at 4:11 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 4:20 pm EST.

Sunshine

The months with the least sunshine are February and December, with an average of 4.8h of sunshine.

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 reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index of 2 in December converts into the following recommendations:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.

Frequently asked questions

Is it cold in Scituate during December?

In December, the average high-temperature and low-temperature are 41.2°F (5.1°C) and 32.7°F (0.4°C) respectively.

What is the average humidity in December?

In Scituate, the average relative humidity in December is 76%.

How many days does it rain in December?

In December, the rain falls for 8.1 days. Throughout December, 0.98" (25mm) of precipitation is accumulated.

How much does it snow in December?

In Scituate, during December, snow falls for 4 days and regularly aggregates up to 0.63" (16mm) of snow.

What is the water temperature in December?

In Scituate, in December, the average water temperature is 46.2°F (7.9°C). Swimming in 46.2°F (7.9°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

What is the month with the shortest days in Scituate?

With an average of 9h and 12min of daylight, December has the shortest days of the year.

What is the average length of the day in December?

The average day length in December is 9h and 10min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 6:52 am and sunset at 4:11 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 4:20 pm EST.

What are the months with the least sunshine?

The months with the least sunshine are February and December, with an average of 4.8h of sunshine.

How long on average sun shines in December in Scituate?

The average sunshine duration in December is 4.8h.

What is the month with the lowest UV index?

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.

What is the UV index reading in December?

In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Scituate, MA

Average temperature in December - Scituate, MA
  • Average high temperature in December: 41.2°F

The warmest month (with the highest average high temperature) is July (76.5°F).
The month with the lowest average high temperature is January (35.6°F).

  • Average low temperature in December: 32.7°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 (25.9°F).

Average pressure in December
Scituate, MA

Average pressure in December - Scituate, 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 (29.93"Hg).

Average wind speed in December
Scituate, MA

Average wind speed in December - Scituate, MA
  • Average wind speed in December: 12.2mph

The windiest month (with the highest average wind speed) is January (12.9mph).
The calmest months (with the lowest average wind speed) are July and August (8mph).

Average humidity in December
Scituate, MA

Average humidity in December - Scituate, MA
  • Average humidity in December: 76%

The months with the highest relative humidity are June and July (79%).
The months with the lowest relative humidity are April and November (74%).

Average rainfall in December
Scituate, MA

Average rainfall in December - Scituate, MA
  • Average rainfall in December: 0.98"

The wettest month (with the highest rainfall) is July (1.26").
The driest month (with the least rainfall) is February (0.67").

Average rainfall days in December
Scituate, MA

Average rainfall days in December - Scituate, MA
  • Average rainfall days in December: 8.1 days

The month with the highest number of rainy days is July (13 days).
The month with the least rainy days is February (6.5 days).

Average snowfall in December
Scituate, MA

Average snowfall in December - Scituate, MA
  • Average snowfall in December: 0.63"

The month with the highest snowfall is February (0.79").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Scituate, MA

Average snowfall days in December - Scituate, MA
  • Average snowfall days in December: 4 days

The months with the highest number of snowfall days are January and February (6.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average sea temperature in December
Scituate, MA

Average sea temperature in December - Scituate, MA
  • Average sea temperature in December: 46.3°F

The best month for swimming (with the highest average sea temperature) is August (67.6°F).
The coldest month (with the lowest average sea temperature) is March (38.8°F).

Average daylight in December /
Average sunshine in December
Scituate, MA

Average daylight in December / Average sunshine in December - Scituate, 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 12min).

  • Average sunshine in December: 4h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).

Average sunshine days in December
Scituate, MA

Average sunshine days in December - Scituate, MA
  • Average sunshine days in December: 18.6 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (15.9 days).

Average UV index in December
Scituate, MA

Average UV index in December - Scituate, 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
Scituate, MA

Average cloud cover in December - Scituate, MA
  • Average cloud cover in December: 48

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 28).

Average visibility in December
Scituate, MA

Average visibility in December - Scituate, 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).

Scituate, Massachusetts, USA

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