Boston Weather in January
United States · 30-year monthly averages
🤔 Fair time to visit
January in Boston is cold, with average daytime highs around 3°C (37°F) and nighttime lows near -5°C (23°F). Expect roughly 86mm of precipitation spread over about 9 rainy days, with a moderate amount of rain.
Avg high
3°C
37°F
Avg low
-5°C
23°F
Rainfall
86mm
moderate
Rainy days
9
days with ≥1mm
🎒 What to pack
- warm coat
- sweaters and layers
- scarf
January vs the rest of the year
FAQ
- How hot is Boston in January?
- January in Boston is cold, with average daytime highs around 3°C (37°F) and nighttime lows near -5°C (23°F). Expect roughly 86mm of precipitation spread over about 9 rainy days, with a moderate amount of rain.
- Does it rain a lot in Boston in January?
- Boston sees around 86mm of precipitation in January on average — moderate by global standards.
- Is January a good time to visit Boston?
- January is a workable month to visit Boston, but expect some weather trade-offs.