Boston weather in January 2026

Expect 6°C daytime maximum temperatures in the shade with on average 2 hours of sunshine per day in Boston in January based on long-term weather averages. There is usually 17 days with some rainfall and 49 mm of average monthly rainfall in January.

  • 6°C maximum daytime temperature in January in Boston6
    6°C max day temperature
  • 2 hours of sunshine per day
  • 17 days with some rainfall in January in Boston17
    17 days with some rainfall
  • 1°C minimum night-time temperature in January in Boston1
    1°C min night temperature
  • 8 hours of daylight per day in January in Boston8
    8 hours of daylight per day
  • No heat & humidity in January in Boston0
    No heat & humidity
  • 49 mm monthly rainfall in January in Boston49
    49 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in January in Boston1
    1 (Low) UV index

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The January weather guide for England (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)

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How cold is it in Boston in January?

Daytime temperatures usually reach 6°C in Boston in January, falling to 1°C at night.

How sunny is it in Boston in January?

There are normally 2 hours of bright sunshine each day in Boston in January - that's 22% of daylight hours.

Does it rain in Boston in January?

There are usually 17 days with some rain in Boston in January and the average monthly rainfall is 49mm.

Boston January sunrise & sunset times

Browse the sunrise and sunset times for Boston in January 2026. Select a month to view Boston sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 08:13 15:54
Friday, 16th January 2026 08:05 16:15
Saturday, 31st January 2026 07:45 16:43

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