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South Portland, ME weather and climate

Cumberland County, ME · population 26,780 · about 52 ft elevation

Everything below is a 30 year average for 1991-2020, computed from daily climate history at South Portland's own coordinates.

The year at a glance

Sunny days
201
clear or partly cloudy, per year
Precipitation
42 in
per year
Wet days
121
rain or snow per year
Snowfall
69 in
per year
Hot days
5
above 90 °F
Freezing nights
138
at or below 32 °F
Humidity
74%
average relative
Average temperature
48 °F
year round

Monthly temperatures

Average daily high and low for each month, in °F.

Daily highDaily low
20406080JanMarMayJulSepNovDaily high, Jan: 32 °FDaily high, Feb: 35 °FDaily high, Mar: 42 °FDaily high, Apr: 54 °FDaily high, May: 64 °FDaily high, Jun: 74 °FDaily high, Jul: 80 °FDaily high, Aug: 79 °FDaily high, Sep: 71 °FDaily high, Oct: 60 °FDaily high, Nov: 48 °FDaily high, Dec: 38 °FDaily low, Jan: 16 °FDaily low, Feb: 17 °FDaily low, Mar: 26 °FDaily low, Apr: 35 °FDaily low, May: 46 °FDaily low, Jun: 55 °FDaily low, Jul: 61 °FDaily low, Aug: 60 °FDaily low, Sep: 52 °FDaily low, Oct: 41 °FDaily low, Nov: 32 °FDaily low, Dec: 22 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high323542546474807971604838
Daily low161726354655616052413222

Monthly precipitation

Total rain plus melted snow for each month, in inches.

0.02.04.0JanMarMayJulSepNovSouth Portland, Jan: 3.3 inSouth Portland, Feb: 3.1 inSouth Portland, Mar: 4.1 inSouth Portland, Apr: 3.8 inSouth Portland, May: 2.9 inSouth Portland, Jun: 3.4 inSouth Portland, Jul: 2.9 inSouth Portland, Aug: 2.9 inSouth Portland, Sep: 3.2 inSouth Portland, Oct: 4.3 inSouth Portland, Nov: 3.5 inSouth Portland, Dec: 4.3 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
South Portland3.33.14.13.82.93.42.92.93.24.33.54.3

Monthly sunny days

Days each month with clear or partly cloudy skies.

01020JanMarMayJulSepNovSouth Portland, Jan: 18 daysSouth Portland, Feb: 16 daysSouth Portland, Mar: 16 daysSouth Portland, Apr: 15 daysSouth Portland, May: 15 daysSouth Portland, Jun: 15 daysSouth Portland, Jul: 18 daysSouth Portland, Aug: 19 daysSouth Portland, Sep: 17 daysSouth Portland, Oct: 18 daysSouth Portland, Nov: 16 daysSouth Portland, Dec: 16 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
South Portland181616151515181917181616

Compare South Portland with another city

Nearby cities and popular picks. Any two cities can be compared from the home page.

See weather for every covered Maine city

About this data

Figures are 30 year averages for 1991-2020. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.

Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).