Massachusetts weather in January 2025

Expect 1°C 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.

1
1°C max day temperature
5
5 hours of sunshine per day
11
11 days with some rainfall
-8
-8°C min night temperature
9
9 hours of daylight per day
0
No heat & humidity
93
93 mm of monthly rainfall
1
1 (Low) UV index
4
4°C 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 destinations in Massachusetts in January. Select a destination to see more weather parameters.

All Massachusetts destinations

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

More about the USA

How cold is it in Massachusetts in January?

Daytime temperatures usually reach 1°C in Boston, Massachusetts in January, falling to -8°C 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.

Is the sea cold around Massachusetts in January?

The average sea temperature around Boston, Massachusetts in January is 4°C.

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 93mm. 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.