As of 06:30 EDT

Boston, MA weather in December

71°

Boston, Sunday, 9 August, 06:30

Partly cloudy. Feels like 72°. High 94°, low 71°.

Pressure29.88 inHg

Wind4 mph SW

Humidity86%

Visibility6.2 mi

Dew point67°

See detailed hourly forecast

In December, Boston, MA averages a high of 40° and a low of 27°. About 4.4 inches of precipitation fall over the month (11 wet days). The record high is 68.4° (1998) and the record low -9.2° (1980). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	44.8°	32.9°	30%	67.3° (2001)	15.3° (1989)
2	44.8°	31.8°	30%	64.4° (2006)	12.7° (1989)
3	44.2°	31.3°	33%	64.8° (2009)	11.1° (1976)
4	43°	30°	25%	65.7° (1982)	10.8° (1989)
5	41.4°	29.3°	28%	63.7° (2001)	9.7° (2025)
6	43.3°	30.4°	48%	68° (2001)	14.9° (2007)
7	42.3°	29.5°	35%	68.4° (1998)	10.2° (1964)
8	39.2°	27.7°	23%	56.8° (2022)	1.9° (1964)
9	41°	27.1°	33%	59.7° (1991)	7.2° (1968)
10	41.7°	28.9°	40%	61.3° (2019)	5.2° (1968)
11	41.5°	28.6°	42%	60.8° (2021)	4.8° (1977)
12	40.5°	27.5°	42%	61.3° (2021)	3.9° (1977)
13	40.8°	27.5°	30%	60.1° (2020)	6.6° (1982)
14	39.9°	27.9°	43%	57.6° (2019)	3.6° (2005)
15	40.1°	27.9°	37%	59.5° (1975)	3.4° (2005)
16	40.3°	27.9°	38%	58.6° (2021)	5.2° (2016)
17	40.1°	27.3°	45%	58.8° (2000)	1.8° (1972)
18	38.5°	25.2°	37%	60.3° (2023)	2.5° (1980)
19	37°	23.9°	25%	58.6° (2025)	5.9° (2020)
20	36.9°	24.6°	35%	55.6° (2002)	1.2° (1980)
21	38.8°	25.5°	30%	62.1° (2018)	-3.3° (1963)
22	39.4°	26.1°	35%	61.9° (2013)	-0.8° (1989)
23	39.6°	26.2°	40%	60.3° (1990)	-2.7° (1989)
24	39.9°	26.1°	42%	67.5° (2015)	-2° (1989)
25	38.7°	23.7°	35%	61.5° (2015)	-7.8° (1980)
26	36.7°	23.9°	25%	57.9° (1964)	-9.2° (1980)
27	35.6°	23.4°	28%	54.9° (1964)	1.2° (1968)
28	38.3°	23.9°	35%	58.8° (2008)	-0.8° (1960)
29	39°	25.5°	37%	63.7° (1984)	-1.1° (2017)
30	37°	23.5°	38%	58.6° (2022)	-6.2° (1962)
31	37.2°	23°	35%	59° (1965)	-7.6° (1962)