Weather in Boston in December
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Compare car hire prices → Affiliate link — we earn a commission at no extra cost to youBoston in December is cold — daytime temperatures average 6.6°C, dropping to -1.5°C at night. The month is fairly wet (10 rainy days on average), with roughly 5.5 hours of sunshine a day. This is peak season for good reason — conditions are close to ideal. For the complete picture, see the best time to visit Boston — every month compared. Once you know when to go, find your Boston packing list at 247PackingList.
Get ready for Boston in December
Search flights to Boston
Compare 100+ airlines for December — one search, best price.
Search Flights →Thermal travel layers
Pack proper layers — winters are genuinely cold and evenings drop fast year-round.
Check Price →What to pack for Boston in December
- Warm winter coat
- Thermal underlayers
- Gloves, hat and scarf
- Waterproof boots
- Compact travel umbrella
- Waterproof jacket
- Quick-dry clothing
Compare all months in Boston
| Month | High | Rain | Rating |
|---|---|---|---|
| January | 3.7°C | 88.2mm | 8/10 |
| February | 4.6°C | 84.9mm | 8/10 |
| March | 9.3°C | 91.1mm | 10/10 |
| April | 13.0°C | 99.9mm | 10/10 |
| May | 20.1°C | 74.8mm | 10/10 |
| June | 25.4°C | 74.6mm | 10/10 |
| July | 28.4°C | 126.0mm | 9/10 |
| August | 27.9°C | 96.0mm | 10/10 |
| September | 23.0°C | 143.8mm | 9/10 |
| October | 17.7°C | 138.3mm | 9/10 |
| November | 11.4°C | 74.9mm | 10/10 |
| December | 6.6°C | 130.4mm | 9/10 |
Full month-by-month guide: best time to visit Boston →
For facts about United States — currency, language and dialling code — see our United States country guide at 247CountryInfo. Travellers also find it useful to keep a Boston travel guide to hand. Check clothing sizes in United States before you shop.
Frequently Asked Questions
Is December a good time to visit Boston?
December rates 9/10 for visiting Boston — excellent time to visit. Expect average highs of 6.6°C, 130.4mm of rain across the month and about 5.5 hours of daily sunshine.
What is the temperature in Boston in December?
In December, Boston has average highs of 6.6°C (43.9°F) and average lows of -1.5°C (29.3°F).
Does it rain in Boston in December?
Some rain is likely. Boston averages 130.4mm across about 10 rainy days in December, so a light waterproof layer is worth packing.
What should I wear in Boston in December?
For Boston in December (6.6°C highs / -1.5°C lows), pack warm winter coat plus thermal underlayers, gloves, hat and scarf, waterproof boots.
More essentials for Boston in December
Packing cubes
Keep the bag organised whatever the weather — compression cubes for every size.
Check Price →Travel first aid kit
Compact TSA-friendly kit for peace of mind wherever you travel.
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Climate data sourced from Open-Meteo (open source, open data licence). Monthly averages calculated from 2020–2023 historical data. Weather can be unpredictable — always check a live forecast before travelling.