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Boston weather in January 2021
- 11°C max day temperature
- 1111 days with some rainfall
- -8-8°C min night temperature
- 99 hours of daylight per day
- 0No heat & humidity
- 9393 mm of monthly rainfall
- 11 (Low) UV index
- 44°C sea temperature
The January weather guide for Boston, Massachusetts 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.
How cold is it in Boston in January?
Daytime temperatures usually reach 1°C in Boston in January, falling to -8°C at night.
How sunny is it in Boston in January?
There are normally 5 hours of bright sunshine each day in Boston in January - that's 55% of daylight hours.
Is the sea cold around Boston in January?
The average sea temperature around Boston in January is 4°C.
Does it rain in Boston in January?
There are usually 11 days with some rain in Boston in January and the average monthly rainfall is 93mm.
Boston sunrise & sunset times for January 2021
Browse the sunrise & sunset times for Boston in January 2021. Select a month to view Boston sunrise & sunset times for the next twelve months.
|Date||Sunrise times||Sunset times|
|Friday, 1st January 2021||07:13||16:23|
|Saturday, 16th January 2021||07:10||16:39|
|Sunday, 31st January 2021||06:59||16:57|
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Metric (°C / mm) | Imperial (°F / inches)
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Where's warm in Massachusetts in January?
Below are average maximum temperatures at popular destinations in Massachusetts in January. Select a destination to see more weather parameters.
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