Massachusetts weather in December 2019

  • 4°C maximum daytime temperature in December in Massachusetts (Boston)4
    4°C max day temperature
  • 5 hours of sunshine per day (49% of daylight hours) in December in Massachusetts5
    5 hours of sunshine per day
  • 12 days with some rainfall in December in Massachusetts (Boston)12
    12 days with some rainfall
  • -5°C minimum night-time temperature in December in Massachusetts (Boston)-5
    -5°C min night temperature
  • 9 hours of daylight per day in December in Massachusetts (Boston)9
    9 hours of daylight per day
  • No heat & humidity in December in Massachusetts (Boston)0
    No heat & humidity
  • 105 mm monthly rainfall in December in Massachusetts (Boston)105
    105 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in December in Massachusetts (Boston)1
    1 (Low) UV index
  • 7°C sea temperature in December in Massachusetts (Boston)7
    7°C sea temperature

Going to Massachusetts? Find the best month to visit Massachusetts based on the weather.

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Expect 4°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Massachusetts in December. Check more long-term weather averages for Massachusetts in December before you book your next holiday to Massachusetts in 2019/2020. The December weather averages shown above are for Boston.

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More about Massachusetts

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The December weather guide for Massachusetts, represented by Boston, shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

Guide to Massachusetts weather in December

The average maximum daytime temperature in Massachusetts in December is a cold 4°C (39°F). The average night-time temperature is usually a very cold -5°C (23°F). There are usually 5 hours of bright sunshine each day, which represents 49% of the 9 hours of daylight.

Expect 105mm (4.1 inches) of rainfall across the whole of December with 12 days with some rain falling. Maximum UV levels will be low (1 UV index) at midday when the skies are clear.

The average sea temperature in and around Massachusetts in December is 7°C (45°F).

The weather in Massachusetts in December is represented by Boston.

Massachusetts sunrise & sunset times for December 2019

Browse the sunrise & sunset times for Massachusetts in December 2019. Select a month to view Massachusetts sunrise & sunset times for the next twelve months. The Massachusetts sunrise & sunset times shown below are for Boston.


Date Sunrise times Sunset times
Sunday, 1st December 2019 06:54 16:13
Monday, 2nd December 2019 06:55 16:12
Tuesday, 3rd December 2019 06:56 16:12
Wednesday, 4th December 2019 06:57 16:12
Thursday, 5th December 2019 06:58 16:12
Friday, 6th December 2019 06:59 16:12
Saturday, 7th December 2019 07:00 16:12
Sunday, 8th December 2019 07:00 16:12
Monday, 9th December 2019 07:01 16:12
Tuesday, 10th December 2019 07:02 16:12
Wednesday, 11th December 2019 07:03 16:12
Thursday, 12th December 2019 07:04 16:12
Friday, 13th December 2019 07:05 16:12
Saturday, 14th December 2019 07:05 16:12
Sunday, 15th December 2019 07:06 16:12
Monday, 16th December 2019 07:07 16:13
Tuesday, 17th December 2019 07:08 16:13
Wednesday, 18th December 2019 07:08 16:13
Thursday, 19th December 2019 07:09 16:14
Friday, 20th December 2019 07:09 16:14
Saturday, 21st December 2019 07:10 16:15
Sunday, 22nd December 2019 07:10 16:15
Monday, 23rd December 2019 07:11 16:16
Tuesday, 24th December 2019 07:11 16:16
Wednesday, 25th December 2019 07:12 16:17
Thursday, 26th December 2019 07:12 16:17
Friday, 27th December 2019 07:12 16:18
Saturday, 28th December 2019 07:13 16:19
Sunday, 29th December 2019 07:13 16:20
Monday, 30th December 2019 07:13 16:20
Tuesday, 31st December 2019 07:13 16:21
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