South Portland, ME Weather - Forecast & Monthly Averages

TEMPERATURE	29
HUMIDITY	78
PRESSURE	103080
WIND COND.	270 7.6

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Weather Quick Facts

The highest monthly average temperature in South Portland for July is 70.1 degrees
The lowest monthly average temperature in South Portland for January is 25 degrees
The most monthly precipitation in South Portland occurs in October with 6.9 inches
The air quality index in South Portland is 5% better than the national average
The pollution index in South Portland is 25% better than the national average

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South Portland Average Temperature

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
Month	Temp. _(min)	Temp. _(max)	Temp. _(avg)	Precipitation
January	15°F	36°F	25°F	3.2"
February	15°F	37°F	26°F	4.2"
March	24°F	44°F	34°F	4.0"
April	34°F	57°F	45°F	5.0"
May	44°F	67°F	55°F	4.5"
June	53°F	75°F	63°F	5.8"
July	60°F	82°F	70°F	4.3"
August	58°F	80°F	69°F	4.4"
September	51°F	74°F	62°F	4.1"
October	41°F	62°F	51°F	6.9"
November	31°F	52°F	41°F	4.4"
December	21°F	40°F	30°F	5.3"

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South Portland air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
Index	South Portland	Maine	National
Air quality index	40	33	42
Pollution index	2,043,700	3,417,521	2,726,193

South Portland air quality information

Measurement	Total
Days measured	365
Days with good air quality	308
Days with moderate air quality	56
Days w/ poor A.Q. for sensitive groups	1
Days with unhealthy air quality	0

South Portland air quality information

Pollutant	Total
Arsenic	0.030%
Benzene	0.020%
Carbon Tetrachloride	0.003%
Lead	0.030%
Mercury	0.002%

Average monthly South Portland temperature with heat index

South Portland monthly precipitation with daily maximum

South Portland monthly snow depth with daily maximum

South Portland monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Old Orchard Beach, ME	8,952	40	20.0%
North Windham, ME	5,651	40	20.0%
Falmouth Foreside, ME	1,550	40	20.0%
Scarborough, ME	5,268	40	20.0%
Biddeford, ME	21,502	40	20.0%
South Portland, ME	25,665	40	20.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Soledad, CA	25,667	37	26.0%
Moscow, ID	25,652	10	80.0%
Madison, MS	25,650	44	12.0%
Fairland, MD	25,649	47	6.0%
Tecumseh, ON	25,689	n/a
South Portland, ME	25,665	40	20.0%

Source: The South Portland, ME weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.