December weather forecast
Smith Mills, MA

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Weather in December

The first month of the winter, December, is also an icy month in Smith Mills, Massachusetts, with an average temperature fluctuating between 42.4°F (5.8°C) and 33.3°F (0.7°C).

Temperature

The shift from November to December coincides with a small decrease in the average high-temperature, down to an icy 42.4°F (5.8°C) from a cool 50.9°F (10.5°C). Throughout December, the average low-temperature dips to a still wintry 33.3°F (0.7°C).

Humidity

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

Rainfall

In Smith Mills, in December, it is raining for 9.5 days, with typically 1.69" (43mm) of accumulated precipitation. Throughout the year, there are 133.2 rainfall days, and 17.2" (437mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall. In December, it is snowing for 3.2 days. Throughout December, 0.79" (20mm) of snow is accumulated. Throughout the year, there are 21.4 snowfall days, and 5.87" (149mm) of snow is accumulated.

Daylight

With an average of 9h and 12min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 6:51 am and sunset at 4:14 pm. On the last day of December, sunrise is at 7:10 am and sunset at 4:23 pm EST.

Sunshine

In Smith Mills, the average sunshine in December is 4.9h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 2 during December leads to these advisories:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. To avoid the Sun's strongest rays, limit exposure around the mid-day period. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

Frequently asked questions

How cold does it get in December?

In Smith Mills, 42.4°F (5.8°C) is the average high-temperature and 33.3°F (0.7°C) is the average low-temperature during December.

What is the average humidity in December?

In December, the average relative humidity is 76%.

How much does it rain in December?

In Smith Mills, Massachusetts, during December, the rain falls for 9.5 days and regularly aggregates up to 1.69" (43mm) of precipitation.

How many days does it snow in December?

In Smith Mills, during December, snow falls for 3.2 days and regularly aggregates up to 0.79" (20mm) of snow.

What is the month with the shortest days?

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

How many hours of daylight does Smith Mills have in December?

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

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 6:51 am and sunset at 4:14 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 4:23 pm EST.

How many hours of sunshine does Smith Mills have in December?

In December, the average sunshine duration is 4.9h.

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?

The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's 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
Smith Mills, MA

Average temperature in December - Smith Mills, MA
  • Average high temperature in December: 42.4°F

The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (36.3°F).

  • Average low temperature in December: 33.3°F

The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).

Average pressure in December
Smith Mills, MA

Average pressure in December - Smith Mills, MA
  • Average pressure in December: 30.03"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).

Average wind speed in December
Smith Mills, MA

Average wind speed in December - Smith Mills, MA
  • Average wind speed in December: 11.2mph

The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (8mph).

Average humidity in December
Smith Mills, MA

Average humidity in December - Smith Mills, 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, April and November (74%).

Average rainfall in December
Smith Mills, MA

Average rainfall in December - Smith Mills, MA
  • Average rainfall in December: 1.69"

The wettest month (with the highest rainfall) is October (1.93").
The driest month (with the least rainfall) is September (1.06").

Average rainfall days in December
Smith Mills, MA

Average rainfall days in December - Smith Mills, MA
  • Average rainfall days in December: 9.5 days

The month with the highest number of rainy days is July (13.4 days).
The month with the least rainy days is January (8.2 days).

Average snowfall in December
Smith Mills, MA

Average snowfall in December - Smith Mills, MA
  • Average snowfall in December: 0.79"

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

Average snowfall days in December
Smith Mills, MA

Average snowfall days in December - Smith Mills, MA
  • Average snowfall days in December: 3.2 days

The month with the highest number of snowfall days is January (6.5 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Smith Mills, MA

Average daylight in December / Average sunshine in December - Smith Mills, MA
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 6min).
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 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in December
Smith Mills, MA

Average sunshine days in December - Smith Mills, MA
  • Average sunshine days in December: 18.3 days

The months with the most sunshine days are November and December (18.3 days).
The month with the least sunshine days is April (14.4 days).

Average UV index in December
Smith Mills, MA

Average UV index in December - Smith Mills, 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
Smith Mills, MA

Average cloud cover in December - Smith Mills, MA
  • Average cloud cover in December: 47

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
Smith Mills, MA

Average visibility in December - Smith Mills, 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).

Smith Mills, Massachusetts, USA

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