_underway_at_sea_in_June_1965.jpg?width=1280)
Groton
WinterOff season ~34°F highs
Things to do in Groton in January
January is off season (quieter, and often cheaper) to visit Groton, with average highs around 34°F. Museums and indoor sights come into their own, with fewer crowds outside.
Best picks for January
What's famous here, weighted toward what shines in January.
_underway_at_sea_in_June_1965.jpg?width=500)
Holidays in January 2027
- New Year's Day · Fri, Jan 1
- Martin Luther King, Jr. Day · Mon, Jan 18
Expect busier roads and pricier stays around these dates. See long weekends.
Groton in January: quick answers
Is January a good time to visit Groton?
January is off season (quieter, and often cheaper) to visit Groton, with average highs around 34°F. Museums and indoor sights come into their own, with fewer crowds outside.
What is the weather like in Groton in January?
Average daytime highs are around 34°F, compared with 80°F in the warmest month. Check the forecast a week out; our planner favors indoor stops on rainy days.
What are the best things to do in Groton in January?
Top picks for January: USS Nautilus, Florence Griswold Museum, Gillette Castle, Submarine Force Library and Museum, Capt. Nathaniel B. Palmer House.
