December weather forecast
Northfield, MA

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Weather in December

December, the first month of the winter in Northfield, is also a wintry month, with an average temperature varying between 34.5°F (1.4°C) and 23.9°F (-4.5°C).

Temperature

Northfield in December demonstrates a small temperature transition, adjusting from an average high of a frosty 45.5°F (7.5°C) in November to a wintry 34.5°F (1.4°C). Northfield experiences a consistent average temperature of 23.9°F (-4.5°C) throughout the nights in December.

Humidity

In December, the average relative humidity is 81%.

Rainfall

In Northfield, during December, the rain falls for 9.8 days and regularly aggregates up to 2.64" (67mm) of precipitation. In Northfield, during the entire year, the rain falls for 146.7 days and collects up to 27.2" (691mm) of precipitation.

Snowfall

Months with snowfall in Northfield are January through May, October through December. In Northfield, in December, during 7.9 snowfall days, 5.35" (136mm) of snow is typically accumulated. In Northfield, during the entire year, snow falls for 43.8 days and aggregates up to 27.28" (693mm) of snow.

Daylight

With an average of 9h and 6min of daylight, December has the shortest days of the year.
On the first day of December in Northfield, sunrise is at 7:01 am and sunset at 4:17 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:26 pm EST.

Sunshine

In Northfield, the average sunshine in December is 5h.

UV index

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In December, an average UV index of 2 transforms 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. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.

Frequently asked questions

How cold is it in December?

The average high-temperature and low-temperature during December are 34.5°F (1.4°C) and 23.9°F (-4.5°C) respectively.

What is the average humidity in December?

In December, the average relative humidity in Northfield is 81%.

How much does it rain in December?

In Northfield, in December, during 9.8 rainfall days, 2.64" (67mm) of precipitation is typically accumulated.

How much does it snow in December?

In Northfield, during December, snow falls for 7.9 days and regularly aggregates up to 5.35" (136mm) of snow.

What is the month with the shortest days?

With an average of 9h and 6min of daylight, December has the shortest days of the year in Northfield.

What is the average length of the day in December?

In December, the average day length is 9h and 6min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:01 am and sunset at 4:17 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:26 pm EST.

How long on average sun shines in December?

The average sunshine duration in December is 5h.

What are the months with the lowest UV index in Northfield?

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?

The average daily maximum UV index in December in Northfield is 2. A UV Index reading of 2, and below, represents a low health risk 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
Northfield, MA

Average temperature in December - Northfield, MA
  • Average high temperature in December: 34.5°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (28.4°F).

  • Average low temperature in December: 23.9°F

The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).

Average pressure in December
Northfield, MA

Average pressure in December - Northfield, MA
  • Average pressure in December: 30.05"Hg

The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in December
Northfield, MA

Average wind speed in December - Northfield, MA
  • Average wind speed in December: 7.3mph

The windiest months (with the highest average wind speed) are January, February and March (7.8mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in December
Northfield, MA

Average humidity in December - Northfield, MA
  • Average humidity in December: 81%

The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is April (73%).

Average rainfall in December
Northfield, MA

Average rainfall in December - Northfield, MA
  • Average rainfall in December: 2.64"

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

Average rainfall days in December
Northfield, MA

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

The month with the highest number of rainy days is June (15.2 days).
The month with the least rainy days is February (8.1 days).

Average snowfall in December
Northfield, MA

Average snowfall in December - Northfield, MA
  • Average snowfall in December: 5.35"

The month with the highest snowfall is February (7.44").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Northfield, MA

Average snowfall days in December - Northfield, MA
  • Average snowfall days in December: 7.9 days

The month with the highest number of snowfall days is February (10.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in December: 5h and 0min

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in December
Northfield, MA

Average sunshine days in December - Northfield, MA
  • Average sunshine days in December: 15.8 days

The months with the most sunshine days are January and November (16.7 days).
The month with the least sunshine days is June (12.4 days).

Average UV index in December
Northfield, MA

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

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

Average cloud cover in December
Northfield, MA

Average cloud cover in December - Northfield, MA
  • Average cloud cover in December: 47

The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in December
Northfield, MA

Average visibility in December - Northfield, MA
  • Average visibility in December: 5mi

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

Northfield, Massachusetts, USA

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