Groton Weather in May
Groton in May sees pleasant daytime temperatures of 19°C (66°F) and nighttime lows of 10°C (50°F). Rainfall is fairly high this month at around 95 mm (3.7 in), so pack a rain jacket to stay dry.
Rainfall in Groton in May
Typically, you can expect about 13 days of rain this month, with 95 mm (3.7 in) on average. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Groton in May
May in Groton brings typical temperatures with highs around 19°C (66°F) and lows of 10°C (50°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights drop to 10°C (50°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.
Sunshine in Groton in May
With approximately 258 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.For Groton itself, July and August generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Groton's climate page.
Groton Temperature in May
Min Temperature
10°C (50°F)
Max Temperature
19°C (66°F)
Chance of Rain
44%
Precipitation
95 mm (3.7 in)
Rainy days
13 days
Humidity
63% *
Sunshine
258 hours *
Percentage Sunshine
57% *
Best Places in the United States of America in May
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in May →
perfect weather
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unpleasant
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What to Wear in Groton in May
Comfortable temperatures call for an easy wardrobe in May. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Groton in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Groton's climate page.
Temperature Rainfall Sunshine Humidity
See the full Groton climate overview or explore weather in the United States of America.
