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Groton
SpringGood time to go ~64°F highs
Things to do in Groton in May
May is a good month to visit Groton, with average highs around 64°F. Blooming parks and mild days make it easy to pack in sights.
Best picks for May
What's famous here, weighted toward what shines in May.
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Holidays in May 2027
- Memorial Day · Mon, May 31
Expect busier roads and pricier stays around these dates. See long weekends.
Groton in May: quick answers
Is May a good time to visit Groton?
May is a good month to visit Groton, with average highs around 64°F. Blooming parks and mild days make it easy to pack in sights.
What is the weather like in Groton in May?
Average daytime highs are around 64°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 May?
Top picks for May: USS Nautilus, Connecticut College Arboretum, Gillette Castle State Park, Hammonasset Beach State Park, Harkness Memorial State Park.
