Bar Harbor

New England Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in New England, the United States of America in September.

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Boston Bar Harbor Portsmouth Providence

Planning a journey to New England, the United States of America this September and curious over the weather conditions to await? Your essential details are found on this page, answering your query:

What to Expect in New England in September

New England, the United States of America is a region in the United States of America. September in New England generally has temperatures that range from pleasant to warm, with precipitation levels ranging from moderate to high.

Temperatures

The average maximum daytime temperatures vary from pleasant in Stowe at 21°C (70°F) to warm in Hartford at 25°C (77°F). Nighttime temperatures generally drop to 13°C (55°F) in Hartford and 9°C (48°F) in Stowe.

For a closer look at conditions across New England, the United States of America, refer to the map below.

Precipitation

In September, precipitation varies across different areas. From moderate rainfall in Boston with an average of 79 mm (3.1 in) to high rainfall in Portland with 103 mm (4.1 in). Based on climate data from the last 30 years, Boston typically sees the least rain in this month, making it the driest month of the year.

Average sunshine

Many locations offer abundant sunshine during this month. For instance, Boston enjoys approximately 238 hours of sunlight, ideal for those seeking sunny weather.

Explore New England by month

Pick a month to see the average temperature, rainfall and sunshine in New England — and find the best time to visit. (based on Boston)

January3°C (37°F) February3°C (37°F) March8°C (46°F) April14°C (57°F) May20°C (68°F) June24°C (75°F) This monthJuly29°C (84°F) August27°C (81°F) September24°C (75°F) October17°C (63°F) November12°C (54°F) December6°C (43°F)
Best Time to Visit New England →

Best Places to Visit in New England in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across New England.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in New England

What is the weather like in September for some of the most popular destinations in New England, the United States of America?

Temperature range in New England (September)

Precipitation variation in New England (September)

Boston

In September Boston generally has high temperatures with maximum daytime temperatures around 24°C (75°F), minimum nighttime temperatures around 15°C (59°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

« August
September
October »
August
September
October
Max temperature
27°C (81°F)
24°C (75°F)
17°C (63°F)
Min temperature
18°C (64°F)
15°C (59°F)
9°C (48°F)
Monthly sun hours
280 hours
238 hours
207 hours
Monthly rainfall
95 mm (3.7 in)
79 mm (3.1 in)
111 mm (4.4 in)
Monthly rainy days
10 days
9 days
12 days
Weather conditions
perfect
perfect
unpleasant
Climate in Boston →

Bar Harbor

In September Bar Harbor generally has pleasant temperatures with maximum daytime temperatures around 21°C (70°F), minimum nighttime temperatures around 11°C (52°F) and high monthly rainfall. So on average the conditions are pleasant that month.

« August
September
October »
August
September
October
Max temperature
24°C (75°F)
21°C (70°F)
15°C (59°F)
Min temperature
15°C (59°F)
11°C (52°F)
6°C (43°F)
Monthly rainfall
96 mm (3.8 in)
102 mm (4 in)
166 mm (6.5 in)
Monthly rainy days
10 days
10 days
13 days
Weather conditions
perfect
pleasant
unpleasant
Climate in Bar Harbor →

Portsmouth

In September Portsmouth generally has high temperatures with maximum daytime temperatures around 23°C (73°F), minimum nighttime temperatures around 12°C (54°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

« August
September
October »
August
September
October
Max temperature
26°C (79°F)
23°C (73°F)
16°C (61°F)
Min temperature
16°C (61°F)
12°C (54°F)
6°C (43°F)
Monthly sun hours
261 hours
214 hours
183 hours
Monthly rainfall
102 mm (4 in)
96 mm (3.8 in)
116 mm (4.6 in)
Monthly rainy days
10 days
9 days
13 days
Weather conditions
pleasant
perfect
unpleasant
Climate in Portsmouth →

Providence

In September Providence generally has high temperatures with maximum daytime temperatures around 24°C (75°F), minimum nighttime temperatures around 14°C (57°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

« August
September
October »
August
September
October
Max temperature
28°C (82°F)
24°C (75°F)
18°C (64°F)
Min temperature
17°C (63°F)
14°C (57°F)
8°C (46°F)
Monthly sun hours
260 hours
233 hours
208 hours
Monthly rainfall
91 mm (3.6 in)
94 mm (3.7 in)
116 mm (4.6 in)
Monthly rainy days
10 days
8 days
12 days
Weather conditions
perfect
perfect
tolerable
Climate in Providence →

Burlington

In September Burlington generally has high temperatures with maximum daytime temperatures around 23°C (73°F), minimum nighttime temperatures around 12°C (54°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

« August
September
October »
August
September
October
Max temperature
27°C (81°F)
23°C (73°F)
15°C (59°F)
Min temperature
16°C (61°F)
12°C (54°F)
5°C (41°F)
Monthly sun hours
260 hours
205 hours
160 hours
Monthly rainfall
82 mm (3.2 in)
81 mm (3.2 in)
115 mm (4.5 in)
Monthly rainy days
13 days
11 days
15 days
Weather conditions
perfect
perfect
unpleasant
Climate in Burlington →

Is your destination not in the list? Have a look at all destinations in New England, in the United States of America.

Popular cities in September

Day & night temperatures, rainfall and average weather in New England in September.

City Weather Day temp Night temp Rainfall
Boston 24°C (75°F) 15°C (59°F) 79 mm (3.1 in)
Bar Harbor 21°C (70°F) 11°C (52°F) 102 mm (4 in)
Portsmouth 23°C (73°F) 12°C (54°F) 96 mm (3.8 in)
Providence 24°C (75°F) 14°C (57°F) 94 mm (3.7 in)
Burlington 23°C (73°F) 12°C (54°F) 81 mm (3.2 in)
Hartford 25°C (77°F) 13°C (55°F) 90 mm (3.5 in)

New England weather in September: frequently asked questions

What is the weather like in New England, the United States of America in September?

In September, New England, the United States of America generally has perfect weather conditions. Boston sees daytime temperatures near 24°C (75°F), with nights cooling to roughly 15°C (59°F).

What is the average temperature in New England, the United States of America in September?

In Boston, the average daytime high in September is 24°C (75°F), while nighttime temperatures drop to around 15°C (59°F).

Does New England, the United States of America get a lot of rain in September?

September is on the drier side in New England, the United States of America. Boston averages only about 79 mm (3.1 in), with most days staying dry.

Is September a Good Time to Visit New England, the United States of America?

We consider September to be one of the best times to travel to New England, the United States of America. Typically, the climate in Boston is perfect.

Generally speaking, the best visiting conditions can be found in August and September offering mostly perfect weather in Boston. In contrast, January, February, March and December tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in New England.

Weather and climate has detailed information for every country in the world. Are you going to the United States of America? Get detailed historical weather averages for many cities in the United States of America.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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