Mount Sunapee Weather in September

September in Mount Sunapee sees daytime temperatures around 21°C (70°F) and lows of 10°C (50°F) at night. With around 99 mm (3.9 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Mount Sunapee in September

Historically, September sees about 10 days of rain, with a monthly average of 99 mm (3.9 in). 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 Mount Sunapee in September

September tends to be one of the perfect months in Mount Sunapee, with 21°C (70°F) in the afternoon and 10°C (50°F) overnight. The difference between afternoon and evening temperatures is usually noticeable. Nights drop to around 10°C (50°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.

Sunshine in Mount Sunapee in September

Expect sunny days throughout the month, with an estimated 214 hours of sunshine. This makes it a pleasant time to visit Mount Sunapee.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.

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• January
• February
• March
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• May
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• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Mount Sunapee's climate page.

Mount Sunapee Temperature in September

Min Temperature 10°C (50°F)  

Max Temperature 21°C (70°F)  

Chance of Rain 34%  

Precipitation 99 mm (3.9 in)  

Rainy days 10 days  

Humidity 76% *  

Sunshine 214 hours *  

Percentage Sunshine *  

* Data from: Concord, the United States of America (45 KM, 28 Miles).

What to Wear in Mount Sunapee in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Mount Sunapee in September

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

Cycling

9/10

Walking

9/10

Barbeque

8/10

Camping

8/10

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 Mount Sunapee's climate page.

More climate data for Mount Sunapee

Temperature Rainfall Sunshine Humidity

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