December weather forecast
Spencer, MA

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Weather in December

December, the first month of the winter in Spencer, is still a cold month, with an average temperature varying between 25.7°F (-3.5°C) and 36.5°F (2.5°C).

Temperature

The decrease of average high-temperatures is mild in December, with a decline from a chilly 46.6°F (8.1°C) in November to a wintry 36.5°F (2.5°C). An average low-temperature of 25.7°F (-3.5°C) is anticipated throughout the nights in Spencer during December.

Humidity

In Spencer, the average relative humidity in December is 80%.

Rainfall

In Spencer, in December, it is raining for 9.2 days, with typically 2.72" (69mm) of accumulated precipitation. Throughout the year, in Spencer, there are 147.4 rainfall days, and 29.76" (756mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Spencer are January through May, October through December. In Spencer, during December, snow falls for 6.9 days and regularly aggregates up to 3.43" (87mm) of snow. In Spencer, during the entire year, snow falls for 39.9 days and aggregates up to 23.82" (605mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 12min of daylight.
On the first day of the month, sunrise is at 6:57 am and sunset at 4:16 pm. On the last day of December, sunrise is at 7:16 am and sunset at 4:25 pm EST.

Sunshine

In December, the average sunshine is 4.4h.

UV index

The months with the lowest UV index in Spencer are January through March, October through December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's 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. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
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Frequently asked questions

How cold is December in Spencer?

In December, the average high-temperature and low-temperature are 36.5°F (2.5°C) and 25.7°F (-3.5°C) respectively. The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, in July is estimated at 86°F (30°C).

What is the average humidity in December in Spencer?

In December, the average relative humidity in Spencer is 80%.

How much does it rain in Spencer in December?

In Spencer, during December, the rain falls for 9.2 days and regularly aggregates up to 2.72" (69mm) of precipitation.

How much does it snow in Spencer in December?

In Spencer, Massachusetts, during December, snow falls for 6.9 days and regularly aggregates up to 3.43" (87mm) of snow.

What is the month with the shortest days in Spencer?

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

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

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

When are sunrise and sunset in December in Spencer?

In December, on the first day of the month, sunrise is at 6:57 am and sunset at 4:16 pm. On the last day of the month, in Spencer, sunrise is at 7:16 am and sunset at 4:25 pm EST.

How long on average sun shines in December in Spencer?

In December, the average sunshine duration is 4.4h.

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

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

What is the UV index reading in December in Spencer?

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

Average temperature in December - Spencer, MA
  • Average high temperature in December: 36.5°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.9°F).

  • Average low temperature in December: 25.7°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).

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Average pressure in December
Spencer, MA

Average pressure in December - Spencer, MA
  • Average pressure in December: 30.04"Hg

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in December
Spencer, MA

Average wind speed in December - Spencer, MA
  • Average wind speed in December: 8.6mph

The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

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Average humidity in December
Spencer, MA

Average humidity in December - Spencer, MA
  • Average humidity in December: 80%

The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (73%).

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Average rainfall in December
Spencer, MA

Average rainfall in December - Spencer, MA
  • Average rainfall in December: 2.72"

The wettest months (with the highest rainfall) are October and November (2.76").
The driest month (with the least rainfall) is September (1.81").

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Average rainfall days in December
Spencer, MA

Average rainfall days in December - Spencer, MA
  • Average rainfall days in December: 9.2 days

The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is January (6.4 days).

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Average snowfall in December
Spencer, MA

Average snowfall in December - Spencer, MA
  • Average snowfall in December: 3.43"

The month with the highest snowfall is February (6.02").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Spencer, MA

Average snowfall days in December - Spencer, MA
  • Average snowfall days in December: 6.9 days

The month with the highest number of snowfall days is January (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Spencer, 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 2min

The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).

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Average sunshine days in December
Spencer, MA

Average sunshine days in December - Spencer, MA
  • Average sunshine days in December: 16.1 days

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is April (12.8 days).

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Average UV index in December
Spencer, MA

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

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average cloud cover in December
Spencer, MA

Average cloud cover in December - Spencer, MA
  • Average cloud cover in December: 51

The month with the most cloud cover is March (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 38).

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Average visibility in December
Spencer, MA

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

The months with the highest visibility are April and December (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and November (5mi).

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Spencer, Massachusetts, USA

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