Groton Weather in July

July in Groton averages 27°C (81°F) during the day and 19°C (66°F) at night. Quite a bit of rainfall is typical this month, with around 98 mm (3.9 in) on average. An umbrella is a good idea.

Rainfall in Groton in July

Records from the past 30 years suggest around 11 days of rain, with 98 mm (3.9 in) average for the month. 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 July

Groton in July has perfect weather. Days reach 27°C (81°F) and nights cool to 19°C (66°F). July is part of the summer season. Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights drop to around 19°C (66°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable. On average, this month sees the highest temperatures of the year. Worth packing a few lighter outfits.

Sunshine in Groton in July

Expect sunny days throughout the month, with an estimated 293 hours of sunshine. This makes it a pleasant time to visit Groton.

If you're inclined towards comfortable temperatures and drier conditions, July is a good time to visit Groton.

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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 July

Min Temperature 19°C (66°F)  

Max Temperature 27°C (81°F)  

Chance of Rain 37%  

Precipitation 98 mm (3.9 in)  

Rainy days 11 days  

Humidity 68% *  

Sunshine 293 hours *  

Percentage Sunshine 64% *  

* Data from: Hartford, the United States of America (68 KM, 42 Miles).

What to Wear in Groton in July

Warm but pleasant conditions in Groton in July. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Groton in July

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

8/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

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.

More climate data for Groton

Temperature Rainfall Sunshine Humidity

See the full Groton climate overview or explore weather in the United States of America.