Boston (MA)
December
Weather in Boston, Massachusetts for December 2026
Your guide to Boston weather in December - trends and predictions
Boston typically experiences moderate snowfall in December, with an average of 10 snowy days.
In general, the average temperature in Boston at the beginning of December is 6.1 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 5.4 °C by the end of December.
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Snow Forecast ❄️
Temperatures
More
6
Dry days
15
Rainy days
10
Snow days
5°/-1°
Temperatures
20 km/h
Avg max wind
72 %
Avg humidity
Boston Weather December
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Temperatures trend during December in Boston
See the weather trend as well as the moving average line
December weather in Boston day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Dec. 1 |  Overcast | 6° /0° | 2.3 mm | 0 cm | |
| Dec. 2 |  Patchy rain possible | 8° /1° | 25.2 mm | 0 cm | |
| Dec. 3 |  Sunny | 8° /0° | 13.2 mm | 0.4 cm | |
| Dec. 4 | Overcast | 5° /-1° | 0.5 mm | 0 cm | |
| Dec. 5 |  Partly cloudy | 5° /-2° | 5.5 mm | 0.8 cm | |
| Dec. 6 |  Heavy rain at times | 6° /0° | 1.5 mm | 0.3 cm | |
| Dec. 7 | Sunny | 5° /-1° | 4.1 mm | 0 cm | |
| Dec. 8 | Patchy rain possible | 6° /-1° | 1.2 mm | 0.7 cm | |
| Dec. 9 |  Cloudy | 5° /-2° | 5.1 mm | 0 cm | |
| Dec. 10 |  Fog | 8° /2° | 6.7 mm | 0.8 cm | |
| Dec. 11 |  Heavy rain | 11° /1° | 20.2 mm | 0 cm | |
| Dec. 12 | Cloudy | 8° /0° | 7.6 mm | 0 cm | |
| Dec. 13 | Cloudy | 6° /-1° | 0.1 mm | 0 cm | |
| Dec. 14 | Sunny | 4° /-2° | 1.3 mm | 0.5 cm | |
| Dec. 15 | Sunny | 4° /-3° | 0.5 mm | 0 cm | |
| Dec. 16 | Overcast | 5° /1° | 7.1 mm | 0.1 cm | |
| Dec. 17 |  Moderate or heavy snow showers | 8° /1° | 8.6 mm | 3.9 cm | |
| Dec. 18 | Cloudy | 6° /0° | 9.2 mm | 0 cm | |
| Dec. 19 | Overcast | 6° /-2° | 12.8 mm | 0 cm | |
| Dec. 20 | Sunny | 3° /-2° | 0.2 mm | 0 cm | |
| Dec. 21 | Overcast | 4° /-2° | 0 mm | 0 cm | |
| Dec. 22 | Sunny | 3° /-3° | 1 mm | 0 cm | |
| Dec. 23 | Sunny | 4° /-3° | 7.4 mm | 1.5 cm | |
| Dec. 24 | Overcast | 3° /-3° | 0.6 mm | 0 cm | |
| Dec. 25 | Overcast | 5° /-2° | 12 mm | 0.3 cm | |
| Dec. 26 | Overcast | 3° /-3° | 1.1 mm | 0 cm | |
| Dec. 27 | Sunny | 4° /-2° | 0.5 mm | 0.4 cm | |
| Dec. 28 |  Light rain | 6° /-2° | 3.6 mm | 0 cm | |
| Dec. 29 | Partly cloudy | 6° /0° | 6.3 mm | 0.1 cm | |
| Dec. 30 | Partly cloudy | 7° /0° | 8.5 mm | 0 cm | |
| Dec. 31 | Heavy rain at times | 7° /2° | 3 mm | 0 cm | |
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Important Notice
Our weather forecast for Boston in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Boston forecast closer to your planned date for the most up-to-date weather information.
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Boston in December - FAQ
What are the expected maximum and minimum temperatures in Boston during December?
Brace for cold days with temperatures not exceeding 5° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Boston during December?
Significant rainfall exceeding 177.2 mm is expected in Boston during December, occurring over more than 15 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Boston in December 2026?
Boston experiences an average snowfall of 9.66633 cm during December, occurring over 10 days.
What are the typical wind conditions in Boston during December?
The average wind speed in Boston during December is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
Boston snow forecast December 2026
Track daily snowfall levels and discover Boston’s snowy potential this December ❄️
On average, Boston sees 10 snowy days during December, with approximately 9.7 cm of total snowfall.
December rainfall patterns in Boston
Explore the daily rainfall trends and prepare for Bostons December weather 💧
Typically, Boston has 15 rainy days in December with a total of 177.2 mm of rainfall.
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