Zip 04109 (Portland, ME) Climate

Portland, ME has a humid continental climate with four distinct seasons. Summers are typically warm and humid, while winters are cold and snowy. The average temperature in the summer is around 66°F, while temperatures can drop to an average of 22°F in the winter months. Rainfall is abundant throughout the year, with April being the wettest month and July being the driest. Snowfall can also be expected during the winter months, with an average of 56 inches each season.

Portland (zip 04109), Maine gets 49 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Portland (zip 04109) averages 62 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 200 sunny days per year in Portland (zip 04109). The US average is 205 sunny days.

Portland (zip 04109) gets some kind of precipitation, on average, 131 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 78 degrees
Winter Low: the January low is 12
Rain: averages 49 inches of rain a year
Snow: averages 62 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 04109 zip code is 6.5 (10=best), which means it is more comfortable than most places in Maine.

9.2 Summer - 4.2 Winter

August, July and June are the most pleasant months in the 04109 zip code, while January and February are the least comfortable months.

Climate	Portland, Maine	United States
	Unlock	38.1 in.
	62.0 in.	Unlock
	Unlock	106.2 days
	200 days	Unlock
	78.3°	85.8°
	Unlock	21.7°
	6.5	Unlock
	Unlock	4.3
	33 ft.	Unlock

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 04109 zip code with an average high temperature of 78.3°, which ranks it as cooler than most places in Maine. In the 04109 zip code, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 04109 zip code are July, August and June.

In the 04109 zip code, there are 3.2 days annually when the high temperature is over 90°, which is about average compared to other places in Maine.

January has the coldest nighttime temperatures for the 04109 zip code with an average of 11.9°. This is warmer than most places in Maine.

In the 04109 zip code, there are 149.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Maine.

In the 04109 zip code, there are 9.4 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Maine.

Humidity in the 04109 zip code 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 04109 zip code with 5.2 inches of rain, and the driest month is February with 3.3 inches. The wettest season is Winter with 29% of yearly precipitation and 22% occurs in Autumn, which is the driest season. The annual rainfall of 48.6 inches in the 04109 zip code means that it is about average compared to other places in Maine.

May is the rainiest month in the 04109 zip code with 12.8 days of rain, and August is the driest month with only 9.3 rainy days. There are 131.3 rainy days annually in the 04109 zip code, which is rainier than most places in Maine. The rainiest season is Summer when it rains 27% of the time and the driest is Winter with only a 24% chance of a rainy day.

An annual snowfall of 62.0 inches in the 04109 zip code means that it is less snowy than most places in Maine. January is the snowiest month in the 04109 zip code with 19.1 inches of snow, and 6 months of the year have significant snowfall.

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