Weather in Boston in December 2024
Average weather
Average temperature in Boston in December
The temperature in December is +45°F on average, with a range between a maximum of +61°F during the day and a minimum of +10°F at night.
The average maximum temperature goes down 7% by the end of the month, compared with the beginning of the month, from +57°F to +54°F.
Is Boston warm or cold in December?
Boston is typically chill in December.
Maximum temperatures go down compared to the previous month from +52°F to +41°F. The minimum temperature also goes down from +37°F to +28°F.
Pack a jumper and a jacket as there will be cooler temperatures.
December is one of the coolest months in Boston, here is the comparison with other months:
Climate in Boston in December
| November | December | January | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +52°F | +41°F | +36°F | ||||
| Min. temperature | ||||||
| +9°F | -4°F | -11°F | ||||
| Max. temperature | ||||||
| +77°F | +72°F | +72°F | ||||
| Rainfall | ||||||
| 95 mm | 82 mm | 59 mm | ||||
| Wind | ||||||
| 3 m/s | 4 m/s | 4 m/s | ||||
| Humidity | ||||||
| 66% | 65% | 63% | ||||
| Air pressure | ||||||
| 1016 HPa | 1016 HPa | 1015 HPa | ||||
| Sunny days | ||||||
| 6 | 5 | 6 | ||||
| Cloudy days | ||||||
| 17 | 17 | 18 | ||||
| Rainy days | ||||||
| 7 | 6 | 4 | ||||
| Snowy days | ||||||
| 0 | 3 | 3 | ||||
December weather is still as ok as in November. It’s getting colder in December. From +52°F in the day, the average maximum temperature lowers to +41°F. As December arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 95 mm to 82 mm. It feels drier, as humidity decreases from 66% to 65%. Winds are stronger in comparison to November, going up from 3 m/s to 4 m/s on average. The days becoming less sunny, going from 6 sunny days in November to 5 in December.
January brings much the same weather, it remains ok.
Wind
The average wind speed is 5 m/s getting up to 12 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Boston is gradually decreasing during December, going from 8 m/s to 3 m/s over the course of the month.
Rain
Snow
December is one of the snowiest months in Boston.
Here’s how December is compared with other months in the amount of snow, total mm:
How was the weather last December in Boston?
Climate Change Over the Years
The climate in Boston in December has not changed that much over the last 43 years.
The average temperature was the lowest in 1989 (+30°F) and the highest in 2015 (+53°F). The driest year was 1989 with only 10 mm of rainfall, and the wettest year was 1996 with 366 mm.
FAQ
Is December a good time to visit Boston?
Can you sunbathe in Boston in December?
Is Boston rainy in December?
Is it sunny in Boston in December?
Other cities in USA
Monthly weather in Boston
Source of the data
For this page, we’ve looked at the typical weather in Boston, based on historical hourly weather data from January 1, 1979, to December 31, 2022.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.