Groton

What is the weather like in Groton in January?

In January, Groton is typically 40°F (4°C) during the day and 31°F (0°C) at night. The month brings about 4.5 in (113 mm) of precipitation in total. Snowfall averages about 5.6 in (142 mm) over the month.

• Average high40°F (4°C)
• Average low31°F (0°C)
• Precipitation4.5 in (113 mm)
• Clear or mostly clear days10
• Snowfall5.6 in (142 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)