Temperature in Maine in September

Daytime highs, nighttime lows and the warmest cities in Maine, the United States of America this September.

Maine, the United States of America, a region in the United States of America, experiences maximum daytime temperatures in September ranging from 20°C (68°F) in Jackman to 23°C (73°F) in Saco. Nighttime temperatures generally drop to 11°C (52°F) in Saco and 7°C (45°F) in Jackman.

What is the temperature of the different cities in Maine, the United States of America in September?

Find the average daytime temperatures in September for the most popular destinations in Maine on the map below. Click on a destination dot for more detailed information.

Select a Month

Check the conditions for any month of the year.

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For a detailed overview over the year and the best time to visit Maine, check out our Maine's climate page.

See also: Maine weather by month.

Best Places to Visit in Maine in September

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

Conditions Temperatures Precipitation
Avg daytime high -5°C (23°F) cold → 32°C (90°F) hot

Marker color shows the average daytime high temperature in September: blue is cold, red is hot.

See all September weather averages, cities and regions in Maine

Maine temperatures in September: frequently asked questions

How hot does it get in Maine, the United States of America in September?

Bar Harbor averages a daytime high of 21°C (70°F) in September, which is pleasant for Maine, the United States of America.

How cold does it get at night in Maine, the United States of America in September?

Average overnight lows in Maine, the United States of America during September sit near 11°C (52°F) in Bar Harbor.

What is the warmest city in September in Maine, the United States of America?

Saco tops the warmest city list in our database with average maximum daytime temperatures around 23°C (73°F) and a minimum nighttime temperature of around 11°C (52°F).

What is the coldest city in September in Maine, the United States of America?

When looking through our records, we find that Jackman stands out as the coolest city in Maine, the United States of America for the month of September. Daytime highs average 20°C (68°F) and it cools down to about 7°C (45°F) at night.

What is the water temperature in September?

The water temperature averages approximately 16°C (61°F) in Portland this month, generally too cold for comfortable swimming.

Interested in more climate information?

We have much more information about the climate in Maine.

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.

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