The three warmest cities in Maine are Portland, Bar Harbor, and Sanford.
In this article I’m going to share with you my ranking of the warmest places in Maine.
I created my list by researching data provided by the National Oceanic and Atmospheric Administration and other climate data providers.
Below I’m listing the top 10 warmest places in Maine that have the highest average yearly temperatures. Later in the article I share a table with 30 most populous cities in Maine.
Top 10 Warmest Cities in Maine
Here are the top 10 warmest places in Maine ranked by their daily mean temperature. The warmest ten cities have very similar temperatures, while the difference between the warmest city of Maine (Portland) compared to the coldest (Houlton) is 7 degrees Fahrenheit.
1. Portland – daily mean temperature of 47.5 °F
Portland, the largest city in Maine and one of the largest metropolitan areas in New England, is located on the Maine coast. With its climate moderated by the Atlantic Ocean, it’s the warmest city in the state. It has the mildest winters, with temperatures just above freezing during the day (32-38 °F). Nights bring much colder temperatures of 16-22 °F. Average annual snowfall is around 68.7 inches, spread over 29 snowy days. Early spring may still carry with it occasional snow. Summer months in Portland bring warm weather, with average high temperatures of 74-80 °F and lows of 55-61 °F. For that reason, June to August is the best period to visit Maine. Portland sees 2,512 sunshine hours a year, with sunshine spread evenly year round.
2. Bar Harbor – daily mean temperature of 47.1 °F
Bar Harbor is a resort town of 5,000 people, located by the Acadia National Park on the Mount Desert Island. While it has similar daytime temperatures as Portland, its nighttime temperatures are up to 2 degrees lower.
3. Sanford – daily mean temperature of 47 °F
Sanford is a city of 22,000 people. It’s situated 35 miles southwest of Portland and 13 miles from the border with New Hampshire. Winters in Sanford have the same daily temperatures as Portland but nights are up to 4 degrees colder, between 12-18 °F. Sanford gets hotter summer days, with temperatures between 78-83 °F.
4. Gray – daily mean temperature of 46.35 °F
Gray, located 18 miles north of Portland, is a town of 8,300 people. It has similar summer temperatures to Portland. Winter days are colder though, with temperatures between 30-35 °F.
5. Lewiston – daily mean temperature of 46.3 °F
Lewiston is the second largest city in Maine. Located halfway between the state’s capital, Augusta, and Portland, Lewiston has even colder winters than Gray, reaching 28-34 °F during the day and 14-21 °F at night. Summers are slightly warmer than in Portland.
6. Augusta – daily mean temperature of 46.1 °F
Augusta, Maine’s capital, has a climate very similar to Lewiston. It has cooler winter temperatures than cities along the coast, between 29-34 °F during the day and 12-20 °F at night. Summer days bring temperatures of 74-80 °F while nights drop to 54-60 °F. It has 34 days of snow which is 11 more than in Lewiston and 5 more than in Portland. Augusta sees 71.3 inches of average annual snowfall.
7. Brunswick – daily mean temperature of 46 °F
Brunswick is a town of 22,000 people, located 27 miles northeast of Portland. While its average high temperatures don’t differ from the previous coastal cities, its average low temperatures are noticeably lower. In the winter, Brunswick experiences temperatures of 10-18 °F (compared to 16-22 °F in Portland). In the summer, it’s between 53-58 °F (compared to 55-61 °F in Portland).
8. Orono – daily mean temperature of 46 °F
Orono, a town of about 11,000 residents, is located 9 miles northeast of Bangor, the third largest city in Maine. Orono has colder winters and slightly warmer average summer high temperatures of 76-81 °F.
9. Gardiner – daily mean temperature of 45.85 °F
Gardiner is a city of 6,000 people, located 6 miles south of Augusta. Gardiner has higher average high temperatures than Augusta, meaning that it features warmer weather during the day. Nights are colder by up to 2 degrees.
10. New Gloucester – daily mean temperature of 45.85 °F
New Gloucester is a town of about 6,000 inhabitants, located 12 miles southwest of Lewiston. In the winter, it sees average high temperatures of 29-35 °F and average lows of 13-20 °F. In the summer, days reach 74-79 °F while nights drop to 54-60 °F.
30 Biggest Cities in Maine Ranked by Daily Mean Temperature
I created the table below by researching data for the most populous municipalities in Maine. When I couldn’t find data for a given city, I moved on to another. While the list includes 30 cities, some of the bigger cities may be missing because there was no data for them. Please check the closest geographically city then.
|City||Average high temperature (°F)||Average low temperature (°F)||Daily mean temperature (°F)|
Check the Warmest Cities in Neighboring States
If you’re interested in learning about the warmest cities in states neighboring Maine, check out the following articles:
Frequently Asked Questions
Winters in Maine are long, snowy, and cold. Freezing temperatures are between November and March, with possible snow between November and April. Average highs in the winter in the warmest cities (including Portland) can reach about 32-38 °F. Nights are much colder, with temperatures dropping to 16-22 °F in Portland and much lower in other cities: even to just 10-18 °F.
On average, in the warmest places in Maine, temperatures get up to 80-83 °F in the hottest month. The mean maximum temperature (the hottest day of the month) can reach 92 °F.
Maine is much warmer than Alaska. The average temperature for 30 cities in Maine I researched for this article is 44.75 °F. Meanwhile, for 30 cities in Alaska I researched for the article on the warmest places in Alaska, the average temperature is 35.43 °F. Even places in the northern interior of Maine such as Presque Isle have an annual daily mean temperature of 41.6 °F.
Portland, Maine has the warmest winters. The average high temperature between December and February is 32-38 °F while the average low temperature is 16-22 °F. Sun still shines 51-59% of the time even in the coldest months. The city offers the best weather if you want to experience cold weather for as few months as possible.
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