Groton Weather in October

Groton in October sees moderate temperatures, with highs around 18°C (64°F) and overnight lows of 8°C (46°F). Rainfall is fairly high at around 107 mm (4.2 in) on average, so pack waterproofs just in case.

Rainfall in Groton in October

Climate statistics over the past 30 years suggest around 13 days of rain, with 107 mm (4.2 in) average for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Groton in October

October in Groton brings typical temperatures with highs around 18°C (64°F) and lows of 8°C (46°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. At 8°C (46°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.

Sunshine in Groton in October

With approximately 199 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

Should you favor a climate that's both dry and comfortably warm, July and August typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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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 October

Min Temperature 8°C (46°F)  

Max Temperature 18°C (64°F)  

Chance of Rain 43%  

Precipitation 107 mm (4.2 in)  

Rainy days 13 days  

Humidity 69% *  

Sunshine 199 hours *  

Percentage Sunshine 58% *  

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

What to Wear in Groton in October

For Groton in October, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Groton in October

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

Swimming

6/10

Cycling

5/10

Walking

5/10

Camping

3/10

Outdoor sports

9/10

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.