Weather in Boston in December
Boston, United States averages a high of 4.9°C (40.8°F) and low of -2.7°C (27.1°F) in December, with 10 rain days and 5.8 hours of daily sunshine. Travel score: 46.3/100 (Mixed). The best time to visit Boston is August.
High
5°C41°F
Low
-3°C27°F
🌧️
10
rain days
☀️
5.8
hrs/day sunshine
💧
72%
humidity
46— Mixed
December in Boston is cold and occasionally wet — bring heavy winter clothing.
What are the average temperatures in Boston?
How much does it rain in Boston in December?
Boston receives an average of 110.1mm of rainfall across 10 rainy days in December. The annual total is 1115.2mm.
What should I pack for Boston in December?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Heavy winter coat
Cold weather with highs around 5°C
🩳
Thermal base layers
Stay warm in freezing temperatures
🧤
Warm gloves
Cold nights around -3°C
🧣
Warm scarf
Protect against cold winds
🎉Visiting United States in December?
Don't miss any public holidays — check before you book!
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Data based on 1994–2024 averages · Last updated: 2024-12-31