South Portland, ME Weather
South Portland, ME climate is mild during summer when temperatures tend to be in the 60's and very cold during winter when temperatures tend to be in the 20's.
The warmest month of the year is July with an average maximum temperature of 78.80 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 12.50 degrees Fahrenheit.
Temperature variations between night and day tend to be moderate during summer with a difference that can reach 20 degrees Fahrenheit, and fairly limited during winter with an average difference of 18 degrees Fahrenheit.
The annual average precipitation at South Portland is 45.83 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is November with an average rainfall of 4.72 Inches.
Weather Data
Current Conditions
|
Fair, 34°F | Humidity: 89% | Dewpoint: 31°F |
| Wind Speed: CALM | Heat Index: 34°F | ||
| Barometer: 30.33 in. | Wind Chill: 34°F |
Weather Forecast
 | Hi: 50°F | Today: Sunny. Highs around 50. Northeast winds around 10 mph. |
| Lo: 35°F | ||
| Hi: 49°F | Monday: Mostly sunny. Highs in the upper 40s. East winds around 10 mph. |
| Lo: 39°F | ||
 | Hi: 50°F | Tuesday: Cloudy. A chance of rain showers in the afternoon. Highs around 50. North winds around 10 mph. Chance of rain 40 percent. |
| Lo: 39°F | ||
| Hi: 50°F | Wednesday: Cloudy with a 40 percent chance of showers. Highs around 50. |
| Lo: 39°F | ||
 | Hi: 51°F | Thanksgiving day: Partly sunny in the morning...Then becoming cloudy. A 40 percent chance of rain showers. Highs in the lower 50s. |
| Lo: 35°F | ||
| Hi: 45°F | Friday: Rain showers likely. Highs in the mid 40s. Chance of rain 60 percent. |
| Lo: 30°F |
Moon, Sunrise and Sunset
 |
Moon Phase: Waxing Crescent Moon | Civil Twilight: 6:11 AM EST |
Sunrise: 6:43 AM EST |
| Sunset: 4:10 PM EST |
Civil Twilight: 4:41 PM EST |
Normal Climate
Normal Temperatures
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max °F | 30.9 | 34.1 | 42.2 | 52.8 | 63.3 | 72.8 | 78.8 | 77.3 | 68.9 | 57.9 | 47.1 | 36.4 | 55.2 |
| Mean °F | 21.7 | 24.8 | 33.7 | 43.7 | 53.8 | 62.9 | 68.7 | 67.2 | 58.7 | 47.7 | 38.3 | 27.6 | 45.7 |
| Min °F | 12.5 | 15.6 | 25.2 | 34.7 | 44.2 | 52.9 | 58.6 | 57.2 | 48.5 | 37.4 | 29.5 | 18.7 | 36.3 |
Normal Precipitation
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | 4.09 | 3.14 | 4.14 | 4.26 | 3.82 | 3.28 | 3.32 | 3.05 | 3.37 | 4.40 | 4.72 | 4.24 | 45.83 |
