Places › Boston, MA › December
Boston in December
An off month — score 41 of 100
Typical December days in Boston reach about 42°F with nights near 29°F; about 9 inches of snow falls in a typical month.
Avg high
42°F
1991–2020 normal
Avg low
29°F
1991–2020 normal
Rain total
4.30 in
in a typical December
Rain days
12
days with at least 0.01 in
Daylight
9h 06m
at mid-December, computed
Snowfall
9.0 in
in a typical December
What to pack for Boston in December
- A real winter coat — typical nights drop below freezing, to about 29°F.
- A waterproof shell — rain falls on about 12 days in a typical December.
- Insulated boots and a winter kit — a typical December brings about 9 inches of snow.
Every packing line is triggered by a number on this page — the rules are on How we pick.
December vs. the alternatives
The whole year in Boston
JAN
37°F
Rain 12 days
Daylight 9h 24mFEB
39°F
Rain 11 days
Daylight 10h 29mMAR
46°F
Rain 12 days
Daylight 11h 48mAPR
56°F
Rain 12 days
Daylight 13h 18mMAY
66°F
★ Best
Rain 12 days
Daylight 14h 34mJUN
76°F
★ Best
Rain 11 days
Daylight 15h 16mJUL
82°F
Rain 9 days
Daylight 14h 59mAUG
80°F
Rain 9 days
Daylight 13h 54mSEP
73°F
★ Best
Rain 9 days
Daylight 12h 26mOCT
62°F
Rain 10 days
Daylight 10h 59mNOV
52°F
Rain 10 days
Daylight 9h 43mDEC
42°F
Rain 12 days
Daylight 9h 06m
37°F
Rain 12 days
Daylight 9h 24mFEB
39°F
Rain 11 days
Daylight 10h 29mMAR
46°F
Rain 12 days
Daylight 11h 48mAPR
56°F
Rain 12 days
Daylight 13h 18mMAY
66°F
★ Best
Rain 12 days
Daylight 14h 34mJUN
76°F
★ Best
Rain 11 days
Daylight 15h 16mJUL
82°F
Rain 9 days
Daylight 14h 59mAUG
80°F
Rain 9 days
Daylight 13h 54mSEP
73°F
★ Best
Rain 9 days
Daylight 12h 26mOCT
62°F
Rain 10 days
Daylight 10h 59mNOV
52°F
Rain 10 days
Daylight 9h 43mDEC
42°F
Rain 12 days
Daylight 9h 06m
Averages are the 1991–2020 climate normals (NOAA National Centers for Environmental Information) for the station named on each page. Rain days = days with at least 0.01 in of precipitation. Daylight is computed for the middle of the month.