December weather forecast
Plympton, MA

Weather in December

December, the first month of the winter, in Plympton, is still a cold month, with average temperature varying between 32.9°F (0.5°C) and 41.9°F (5.5°C).

Temperature

In December, the average high-temperature slightly decreases, from a fresh 50.7°F (10.4°C) in November, to a cold 41.9°F (5.5°C). In Plympton, in December, the average low-temperature is 32.9°F (0.5°C).

Humidity

In Plympton, the average relative humidity is 76%.

Rainfall

In Plympton, during December, the rain falls for 9.8 days and regularly aggregates up to 1.54" (39mm) of precipitation. Throughout the year, there are 132.2 rainfall days, and 16.3" (414mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Plympton are January through April, November and December. In Plympton, snow falls for 4 days, with typically accumulated 1.02" (26mm) of snow. In Plympton, during the entire year, snow falls for 23.3 days, and aggregates up to 5.87" (149mm) of snow.

Daylight

The month with the shortest days in Plympton is December, with an average of 9.2h of daylight.

Sunshine

February and December, with an average of 4.7h of sunshine, are months with the least 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 of 2, and less, symbolizes a minimal health hazard from unsafe exposure to the UV radiation for the ordinary person.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
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 Plympton?

The average relative humidity in December in Plympton is 76%.

How many days does it rain in December in Plympton?

In December, in Plympton, Massachusetts, the rain falls for 9.8 days. Throughout December, 1.54" (39mm) of precipitation is accumulated.

How many days does it snow in December in Plympton?

In Plympton, in December, snow falls for 4 days, with typically accumulated 1.02" (26mm) of snow.

What is the month with the shortest days in Plympton?

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

How many hours of daylight does Plympton have in December?

The average length of the day in December in Plympton is 9.2h.

What is the month with the least sunshine in Plympton?

Months with the least sunshine in Plympton, Massachusetts, are February and December, with an average of 4.7h of sunshine.

How long on average sun shines in December in Plympton?

The average sunshine in December in Plympton is 4.7h.

When is the lowest UV index in Plympton?

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 intensity in December in Plympton?

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

Average temperature in December
Plympton, MA

Average temperature in December - Plympton, MA
  • Average high temperature in December: 41.9°F

The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (35.8°F).

  • Average low temperature in December: 32.9°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

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Average pressure in December
Plympton, MA

Average pressure in December - Plympton, MA
  • Average pressure in December: 30.03"

The month with the highest atmospheric pressure is November (30.06").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed in December
Plympton, MA

Average wind speed in December - Plympton, MA
  • Average wind speed in December: 11.6mph

The windiest month (with the highest average wind speed) is January (12.3mph).
The calmest month (with the lowest average wind speed) is August (7.8mph).

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Average humidity in December
Plympton, MA

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

The month with the highest relative humidity is July (80%).
Months with the lowest relative humidity are March, April and November (74%).

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Average rainfall in December
Plympton, MA

Average rainfall in December - Plympton, MA
  • Average rainfall in December: 1.54"

The wettest months (with the highest rainfall) are July and October (1.65").
The driest month (with the least rainfall) is February (1.02").

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Average rainfall days in December
Plympton, MA

Average rainfall days in December - Plympton, MA
  • Average rainfall days in December: 9.8 days

The month with the highest number of rainy days is July (14 days).
The month with the least rainy days is January (7.4 days).

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Average snowfall in December
Plympton, MA

Average snowfall in December - Plympton, MA
  • Average snowfall in December: 1.02"

The month with the highest snowfall is March (1.77").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Plympton, MA

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

The month with the highest number of snowfall days is January (7.1 days).
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
Plympton, MA

Average daylight in December / Average sunshine in December - Plympton, 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: 4.7h

The month with the most sunshine is August (Average sunshine: 10.6h).
Months with the least sunshine are February and December (Average sunshine: 4.7).

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Average sunshine days in December
Plympton, MA

Average sunshine days in December - Plympton, MA
  • Average sunshine days in December: 18.5 days

The month with the most sunshine days is December (18.5 days).
The month with the least sunshine days is July (14.8 days).

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Average UV index in December
Plympton, MA

Average UV index in December - Plympton, MA
  • Average UV index in December: 2

Months with the highest UV index are June, July and August (UV index 6).
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
Plympton, MA

Average cloud cover in December - Plympton, 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 29).

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Average visibility in December
Plympton, MA

Average visibility in December - Plympton, MA
  • Average visibility in December: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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