United States · 1991–2020 normal

Boylston in
December.

Typical December weather in Boylston: 4.6°C by day, -5.1°C at night, 87 mm of rain over 8.6 wet days. These are measured 1991–2020 station normals, not a forecast.

Typical high4.6°C
Typical low-5.1°C
Rain87 mm
Wet days8.6

Comfort score 5 this month (September leads the year at 81). Daylight is calculated as 9 h 05 from latitude 42.39°.

Event window

Frost-level nights in December

The measured night-time normal is -5.1°C, so frost is typical rather than exceptional this month.

The evidence behind this page

One month,
from the same station.

Place identity
GeoNames 4931127
NOAA station
USW00004780 · FITCHBURG MUNI AP
Station distance
18.7 km from the place centre
Coverage
Good coverage · 23 usable years
Important limit
Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.