Is South Boston hot in December?
Days are typically cold at 5.8°C, while nights average -1.4°C.
United States · 1991–2020 normal
South Boston in
December.
Typical December weather in South Boston: 5.8°C by day, -1.4°C at night, 109 mm of rain over 9.4 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high5.8°C
Typical low-1.4°C
Rain109 mm
Wet days9.4
In the year-round weather comparison, December scores 5 out of 100 (September leads the year at 85). Daylight is calculated as 9 h 06 from latitude 42.33°. Open-water sea temperature is 7.5°C (15 km from the place centre).
December at a glance
What is South Boston like in December?
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Does it rain much?
The measured monthly average is 109 mm across about 9 wet days.
How much daylight is there?
There are about 9 h 06 between sunrise and sunset at mid-month, calculated from the place latitude.
Is December a good time to visit?
December ranks 12 of 12 in our weather comparison; September ranks first.
Event window
Frost-level nights in December
The measured night-time normal is -1.4°C, so frost is typical rather than exceptional this month.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 4951305
- NOAA station
- USW00014739 · BOSTON
- Station distance
- 4.5 km from the place centre
- Coverage
- Strong coverage · 30 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.
Next step
Choose your month.
Then plan the details.
The weather comparison for South Boston is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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