December weather forecast
Wareham, MA

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Weather in December

December, the first month of the winter in Wareham, is also an icy month, with an average temperature ranging between min 33.6°F (0.9°C) and max 42.3°F (5.7°C).

Temperature

The onset of December brings a small shift in high-temperatures, falling from a fresh 50.9°F (10.5°C) in November to an icy 42.3°F (5.7°C). Wareham observes an average low-temperature of 33.6°F (0.9°C) during the slightly cooler nights of December.

Humidity

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

Rainfall

In Wareham, in December, it is raining for 10.3 days, with typically 1.5" (38mm) of accumulated precipitation. In Wareham, during the entire year, the rain falls for 136.3 days and collects up to 15.63" (397mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In December, it is snowing for 3.2 days. Throughout December, 0.75" (19mm) of snow is accumulated. Throughout the year, there are 21.6 snowfall days, and 4.29" (109mm) of snow is accumulated.

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 6:51 am and sunset at 4:13 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 4:22 pm EST.

Sunshine

In December, the average sunshine is 4.9h.

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 unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, the maximum UV index of 2 suggests this advice:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Updated: Aug 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is December cold?

The average high-temperature, in December, in Wareham, is 42.3°F (5.7°C), while the average low-temperature is 33.6°F (0.9°C).

What is the average humidity in December?

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

How much does it rain in December?

In Wareham, in December, during 10.3 rainfall days, 1.5" (38mm) of precipitation is typically accumulated.

How many days does it snow in December?

In Wareham, in December, during 3.2 snowfall days, 0.75" (19mm) of snow is typically accumulated.

What is the month with the shortest days?

The month with the shortest days in Wareham is December, with an average of 9h and 12min of daylight.

How many hours of daylight does Wareham have in December?

In December, the average day length is 9h and 13min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 6:51 am and sunset at 4:13 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 4:22 pm EST.

How long on average sun shines in December?

The average sunshine duration in December is 4.9h.

What is the month with the lowest UV index in Wareham?

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

How high is the UV index in December?

The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability 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
Wareham, MA

Average temperature in December - Wareham, MA
  • Average high temperature in December: 42.3°F

The warmest month (with the highest average high temperature) is August (76.6°F).
The month with the lowest average high temperature is January (36.7°F).

  • Average low temperature in December: 33.6°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 (27.3°F).

Average pressure in December
Wareham, MA

Average pressure in December - Wareham, 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
Wareham, MA

Average wind speed in December - Wareham, MA
  • Average wind speed in December: 12.3mph

The windiest month (with the highest average wind speed) is January (12.9mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).

Average humidity in December
Wareham, MA

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

The months with the highest relative humidity are June and July (80%).
The months with the lowest relative humidity are March and November (74%).

Average rainfall in December
Wareham, MA

Average rainfall in December - Wareham, MA
  • Average rainfall in December: 1.5"

The wettest month (with the highest rainfall) is October (1.89").
The driest month (with the least rainfall) is February (0.98").

Average rainfall days in December
Wareham, MA

Average rainfall days in December - Wareham, MA
  • Average rainfall days in December: 10.3 days

The months with the highest number of rainy days are May and July (14.1 days).
The month with the least rainy days is February (7.7 days).

Average snowfall in December
Wareham, MA

Average snowfall in December - Wareham, MA
  • Average snowfall in December: 0.75"

The month with the highest snowfall is February (1.1").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Wareham, MA

Average snowfall days in December - Wareham, MA
  • Average snowfall days in December: 3.2 days

The month with the highest number of snowfall days is January (6.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Wareham, 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 month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in December
Wareham, MA

Average sunshine days in December - Wareham, MA
  • Average sunshine days in December: 17.7 days

The month with the most sunshine days is December (17.7 days).
The month with the least sunshine days is April (14.3 days).

Average UV index in December
Wareham, MA

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

The months with the highest UV index are June, 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
Wareham, MA

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

The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 28).

Average visibility in December
Wareham, MA

Average visibility in December - Wareham, 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).

Wareham, Massachusetts, USA

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