United States · 1991–2020 normal
Merrimac in
December.
Typical December weather in Merrimac: 8.5°C by day, -3.3°C at night, 85 mm of rain over 5.9 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high8.5°C
Typical low-3.3°C
Rain85 mm
Wet days5.9
Comfort score 6 this month (September leads the year at 77). Daylight is calculated as 9 h 30 from latitude 38.45°.
Event window
Frost-level nights in December
The measured night-time normal is -3.3°C, so frost is typical rather than exceptional this month.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 4772739
- NOAA station
- USC00440860 · BOSTON 4 SE
- Station distance
- 10.5 km from the place centre
- Coverage
- Good coverage · 17 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.