December weather forecast
Milton, MA

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Weather in December

The first month of the winter, December, is also an icy month in Milton, Massachusetts, with an average temperature ranging between min 29.8°F (-1.2°C) and max 40.1°F (4.5°C).

Temperature

A subtle decrease in the average high-temperature marks December, falling from November's chilly 49.5°F (9.7°C) to an icy 40.1°F (4.5°C). In Milton, the December nights cool down to an average low of 29.8°F (-1.2°C).

Humidity

In December, the average relative humidity is 76%.

Rainfall

In Milton, in December, during 6 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. Throughout the year, there are 89.5 rainfall days, and 6.61" (168mm) of precipitation is accumulated.

Snowfall

January through May, November and December are months with snowfall. In Milton, in December, snow falls for 3.2 days, with typically accumulated 0.55" (14mm) of snow. In Milton, during the entire year, snow falls for 18.1 days and aggregates up to 2.87" (73mm) of snow.

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 6:54 am and sunset at 4:12 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 4:22 pm EST.

Sunshine

In Milton, the average sunshine in December is 4.7h.

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 reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 2 during December translates into the following guidance:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Updated: Aug 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is December cold?

The high-temperature, in December, in Milton, records 40.1°F (4.5°C), while the low-temperature is 29.8°F (-1.2°C). The average heat index (a.k.a. 'real feel', 'feels like'), which combines air temperature and relative humidity, in July is computed to be 86°F (30°C).

What is the average humidity in December?

The average relative humidity in December is 76%.

How much does it rain in December?

In Milton, Massachusetts, during December, the rain falls for 6 days and regularly aggregates up to 0.63" (16mm) of precipitation.

How many days does it snow in December in Milton?

In Milton, Massachusetts, during December, snow falls for 3.2 days and regularly aggregates up to 0.55" (14mm) of snow.

What is the month with the shortest days?

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

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

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

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 6:54 am and sunset at 4:12 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 4:22 pm EST.

How many hours of sunshine does Milton have in December?

The average sunshine duration in December is 4.7h.

What is the month with the lowest UV index?

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

What is the UV index intensity in December?

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

Average temperature in December - Milton, MA
  • Average high temperature in December: 40.1°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (34°F).

  • Average low temperature in December: 29.8°F

The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).

Average pressure in December
Milton, MA

Average pressure in December - Milton, 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
Milton, MA

Average wind speed in December - Milton, MA
  • Average wind speed in December: 9.2mph

The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

Average humidity in December
Milton, MA

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

The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (70%).

Average rainfall in December
Milton, MA

Average rainfall in December - Milton, MA
  • Average rainfall in December: 0.63"

The wettest month (with the highest rainfall) is April (0.79").
The driest month (with the least rainfall) is September (0.31").

Average rainfall days in December
Milton, MA

Average rainfall days in December - Milton, MA
  • Average rainfall days in December: 6 days

The month with the highest number of rainy days is July (10.3 days).
The month with the least rainy days is February (4.3 days).

Average snowfall in December
Milton, MA

Average snowfall in December - Milton, MA
  • Average snowfall in December: 0.55"

The month with the highest snowfall is March (0.83").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in December
Milton, MA

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

The month with the highest number of snowfall days is January (4.6 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
Milton, MA

Average daylight in December / Average sunshine in December - Milton, 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 4min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in December
Milton, MA

Average sunshine days in December - Milton, MA
  • Average sunshine days in December: 21.5 days

The month with the most sunshine days is November (22.1 days).
The month with the least sunshine days is April (17.8 days).

Average UV index in December
Milton, MA

Average UV index in December - Milton, 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
Milton, MA

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

The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in December
Milton, MA

Average visibility in December - Milton, 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).

Milton, Massachusetts, USA

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