United States · 1991–2020 normal
Groton in
January.
Typical January weather in Groton: -5°C by day, -14.6°C at night, 13 mm of rain over 2.6 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high-5°C
Typical low-14.6°C
Rain13 mm
Wet days2.6
Comfort score 5 this month (August leads the year at 83). Daylight is calculated as 9 h 04 from latitude 45.45°.
Event window
Frost-level nights in January
The measured night-time normal is -14.6°C, so frost is typical rather than exceptional this month.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 5228242
- NOAA station
- USC00390120 · ANDOVER #2
- Station distance
- 15.5 km from the place centre
- Coverage
- Good coverage · 15 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.