December weather forecast
Orleans, MA

Weather in December

December, the first month of the winter, in Orleans, is still a chilly month, with average temperature ranging between min 37.6°F (3.1°C) and max 44.1°F (6.7°C).

Temperature

In Orleans, the average high-temperature in December marginally drops, from a fresh 51.3°F (10.7°C) in November, to a chilly 44.1°F (6.7°C). The average low-temperature, in Orleans, is 37.6°F (3.1°C).

Humidity

In December, the average relative humidity in Orleans, Massachusetts, is 75%.

Rainfall

In Orleans, in December, it is raining for 6 days, with typically 0.67" (17mm) of accumulated precipitation. Throughout the year, there are 78.2 rainfall days, and 5.75" (146mm) of precipitation is accumulated.

Snowfall

January through March, November and December are months with snowfall in Orleans. The month with the most snowfall is December when snow falls for 2.4 days and typically aggregates up to 0.31" (8mm) of snow.

Daylight

December has the shortest days of the year in Orleans, Massachusetts, with an average of 9.2h of daylight.

Sunshine

With an average of 4.3h of sunshine, December has the least sunshine of the year in Orleans.

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 value of 2, and less, symbolizes a low health risk from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 2 in December transform into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in December in Orleans?

The average relative humidity in December in Orleans, Massachusetts, is 75%.

How much does it rain in Orleans in December?

In Orleans, during December, the rain falls for 6 days and regularly aggregates up to 0.67" (17mm) of precipitation.

What is the snowiest month in Orleans?

December is the month with the most snowfall in Orleans. Snow falls for 2.4 days and accumulates 0.31" (8mm) of snow.

How much does it snow in Orleans in December?

In Orleans, in December, during 2.4 snowfall days, 0.31" (8mm) of snow is typically accumulated.

What is the month with the shortest days in Orleans?

December has the shortest days of the year in Orleans, Massachusetts, with an average of 9.2h of daylight.

What is the average length of the day in December in Orleans?

In December, the average length of the day in Orleans is 9.2h.

What is the month with the least sunshine in Orleans?

December has the least sunshine of the year in Orleans, Massachusetts, with an average of 4.3h of sunshine.

How many hours of sunshine does Orleans have in December?

The average sunshine in December in Orleans, Massachusetts, is 4.3h.

When is the lowest UV index in Orleans?

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

What is the UV index reading in December in Orleans?

The average daily maximum UV index in December in Orleans, Massachusetts, is 2. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to the Sun's UV rays.

Average temperature in December
Orleans, MA

Average temperature in December - Orleans, MA
  • Average high temperature in December: 6.7°C

The warmest month (with the highest average high temperature) is August (21.9°C).
The month with the lowest average high temperature is January (3.8°C).

  • Average low temperature in December: 3.1°C

The month with the highest average low temperature is August (19.9°C).
The coldest month (with the lowest average low temperature) is January (-0.3°C).

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Average pressure in December
Orleans, MA

Average pressure in December - Orleans, MA
  • Average pressure in December: 1016.6mbar

The month with the highest atmospheric pressure is November (1017.8mbar).
The month with the lowest atmospheric pressure is June (1013.7mbar).

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Average wind speed in December
Orleans, MA

Average wind speed in December - Orleans, MA
  • Average wind speed in December: 28.4km/h

The windiest month (with the highest average wind speed) is January (29.4km/h).
The calmest month (with the lowest average wind speed) is August (18.3km/h).

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Average humidity in December
Orleans, MA

Average humidity in December - Orleans, MA
  • Average humidity in December: 75%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is November (74%).

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Average rainfall in December
Orleans, MA

Average rainfall in December - Orleans, MA
  • Average rainfall in December: 17mm

The wettest month (with the highest rainfall) is October (22mm).
The driest months (with the least rainfall) are July and August (7mm).

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Average rainfall days in December
Orleans, MA

Average rainfall days in December - Orleans, MA
  • Average rainfall days in December: 6 days

The month with the highest number of rainy days is April (8.2 days).
The month with the least rainy days is February (4.8 days).

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Average snowfall in December
Orleans, MA

Average snowfall in December - Orleans, MA
  • Average snowfall in December: 8mm

The month with the highest snowfall is December (8mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

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Average snowfall days in December
Orleans, MA

Average snowfall days in December - Orleans, MA
  • Average snowfall days in December: 2.4 days

The month with the highest number of snowfall days is January (3.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Orleans, MA
  • Average daylight in December: 9.2h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in December: 4.3h

The month with the most sunshine is August (Average sunshine: 10.7h).
The month with the least sunshine is December (Average sunshine: 4.3h).

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Average sunshine days in December
Orleans, MA

Average sunshine days in December - Orleans, MA
  • Average sunshine days in December: 21.8 days

The month with the most sunshine days is September (23.4 days).
The month with the least sunshine days is February (19.8 days).

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Average UV index in December
Orleans, MA

Average UV index in December - Orleans, 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).

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Average cloud cover in December
Orleans, MA

Average cloud cover in December - Orleans, MA
  • Average cloud cover in December: 54

The month with the most cloud cover is December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in December
Orleans, MA

Average visibility in December - Orleans, MA
  • Average visibility in December: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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