Massachusetts weather in January 2025

Expect 34°F daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Massachusetts in January. Check more long-term weather averages for Massachusetts in January before you book your next holiday to Massachusetts in 2025/2026.

  • 34°F maximum daytime temperature in January in Massachusetts (Boston)34
    34°F max day temperature
  • 5 hours of sunshine per day
  • 11 days with some rainfall in January in Massachusetts (Boston)11
    11 days with some rainfall
  • 18°F minimum night-time temperature in January in Massachusetts (Boston)18
    18°F min night temperature
  • 9 hours of daylight per day in January in Massachusetts (Boston)9
    9 hours of daylight per day
  • No heat & humidity in January in Massachusetts (Boston)0
    No heat & humidity
  • 3.7 inches monthly rainfall in January in Massachusetts (Boston)3.7
    3.7 inches of monthly rainfall
  • UV (maximum) index 1 (Low) in January in Massachusetts (Boston)1
    1 (Low) UV index
  • 39°F sea temperature in January in Massachusetts (Boston)39
    39°F sea temperature

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The January 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.

Top Massachusetts destinations

Below are average maximum temperatures at popular countries, regions and places in Massachusetts in January. Select a holiday destination to see more weather parameters.

All Massachusetts destinations

Metric (°C)  |  Imperial (°F)

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More about the USA

How cold is it in Massachusetts in January?

Daytime temperatures usually reach 34°F in Boston, Massachusetts in January, falling to 18°F at night.

How sunny is it in Massachusetts in January?

There are normally 5 hours of bright sunshine each day in Boston, Massachusetts in January - that's 55% of daylight hours.

How warm is the sea around Massachusetts in January?

The average sea temperature around Boston, Massachusetts in January is 39°F.

Does it rain in Massachusetts in January?

There are usually 11 days with some rain in Boston, Massachusetts in January and the average monthly rainfall is 3.7 inches. Rain may fall as snow in this month.

Massachusetts January sunrise & sunset times

Browse the sunrise and sunset times for Massachusetts in January 2025. Select a month to view Massachusetts sunrise and sunset times for the next 12 months. The Massachusetts sunrise and sunset times shown below are for Boston.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st January 2025 07:13 16:23
Thursday, 16th January 2025 07:10 16:39
Friday, 31st January 2025 06:58 16:57

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