Portland-South Portland Metro Area, ME Climate

The climate in the Portland-South Portland, ME Metro Area is known for its humid continental climate. Summers are usually warm and humid with temperatures averaging around 75°F (24°C), while winters are cold and wet with temperatures hovering around 25-30°F (-4 to -1°C). The area experiences snowfall during the winter months, although it usually melts quickly due to the mild climate. Rainfall is also common throughout the year, with April being the wettest month on average. The summer months can be quite hot and humid at times, making air conditioning a necessity.

Portland-South Portland Metro Area, Maine gets 50 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Portland-South Portland Metro Area averages 66 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 205 sunny days per year in Portland-South Portland Metro Area. The US average is 205 sunny days.

Portland-South Portland Metro Area gets some kind of precipitation, on average, 129 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 79 degrees
Winter Low: the January low is 10
Rain: averages 50 inches of rain a year
Snow: averages 66 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the Portland-South Portland metro area is 6.5 (10=best), which means it is more comfortable than most places in Maine.

9.1 Summer - 4.1 Winter

August, July and June are the most pleasant months in the Portland-South Portland metro area, while January and February are the least comfortable months.

Climate	Portland-South Portland, Maine	United States
	49.5 in.	38.1 in.
	65.7 in.	27.8 in.
	129.4 days	106.2 days
	205 days	205 days
	79.4°	85.8°
	9.9°	21.7°
	6.5	7
	2.8	4.3
	239 ft.	2443 ft.

Climate

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

July is the hottest month for the Portland-South Portland metro area with an average high temperature of 79.4°, which ranks it as warmer than most places in Maine. In the Portland-South Portland metro area, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the Portland-South Portland metro area are August, July and June.

In the Portland-South Portland metro area, there are 4.3 days annually when the high temperature is over 90°, which is hotter than most places in Maine.

January has the coldest nighttime temperatures for the Portland-South Portland metro area with an average of 9.9°. This is about average compared to other places in Maine.

In the Portland-South Portland metro area, there are 159.9 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Maine.

In the Portland-South Portland metro area, there are 14.2 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Maine.

Humidity in the Portland-South Portland metro area is generally quite low and comfortable. There are few days during the summer when the humidity becomes unpleasant. The most humid months (but still comfortable) are July, August and June.

November is the wettest month in the Portland-South Portland metro area with 4.9 inches of rain, and the driest month is February with 3.4 inches. The wettest season is Winter with 27% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 49.5 inches in the Portland-South Portland metro area means that it is wetter than most places in Maine.

June is the rainiest month in the Portland-South Portland metro area with 12.6 days of rain, and February is the driest month with only 8.8 rainy days. There are 129.4 rainy days annually in the Portland-South Portland metro area, which is about average compared to other places in Maine. The rainiest season is Summer when it rains 26% of the time and the driest is Spring with only a 24% chance of a rainy day.

An annual snowfall of 65.7 inches in the Portland-South Portland metro area means that it is less snowy than most places in Maine. January is the snowiest month in the Portland-South Portland metro area with 18.8 inches of snow, and 6 months of the year have significant snowfall.

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