Boston weather in December 2024

Expect 39°F daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Boston in December. Check more long-term weather averages for Boston in December before you book your next holiday to Massachusetts in 2024/2025.

  • 39°F maximum daytime temperature in December in Boston39
    39°F max day temperature
  • 5 hours of sunshine per day
  • 12 days with some rainfall in December in Boston12
    12 days with some rainfall
  • 23°F minimum night-time temperature in December in Boston23
    23°F min night temperature
  • 9 hours of daylight per day in December in Boston9
    9 hours of daylight per day
  • No heat & humidity in December in Boston0
    No heat & humidity
  • 4.1 inches monthly rainfall in December in Boston4.1
    4.1 inches of monthly rainfall
  • UV (maximum) index 1 (Low) in December in Boston1
    1 (Low) UV index
  • 45°F sea temperature in December in Boston45
    45°F sea temperature

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The December weather guide for Massachusetts (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)  |  Imperial (°F)

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More about the USA

How cold is it in Boston in December?

Daytime temperatures usually reach 39°F in Boston in December, falling to 23°F at night.

How sunny is it in Boston in December?

There are normally 5 hours of bright sunshine each day in Boston in December - that's 49% of daylight hours.

How warm is the sea around Boston in December?

The average sea temperature around Boston in December is 45°F.

Does it rain in Boston in December?

There are usually 12 days with some rain in Boston in December and the average monthly rainfall is 4.1 inches. Rain may fall as snow in this month.

Boston December sunrise & sunset times

Browse the sunrise and sunset times for Boston in December 2024. Select a month to view Boston sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st December 2024 06:54 16:12
Monday, 16th December 2024 07:07 16:13
Tuesday, 31st December 2024 07:13 16:22

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