Monthly Historical AveragesPortland, ME
Average Temperature
High
18°
Feels 17
Low
8°
Feels 7
Average Precipitation
12 Days
73.6mm
0.1cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastSunday, May 24, 2026
Day
12°Feels 11
Wind
14 km/h E
Gust
24 km/h
Humidity
58%
P.O.P
40%
Rain
~1 mm
Night
10°Feels 8
Wind
18 km/h E
Gust
27 km/h
Humidity
94%
P.O.P
90%
Rain
5-10 mm
Historical AveragesMay 24
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity