Currently: 63 °F. Overcast. (Weather station: Portland - Portland International Jetport, USA). See more current weatherAnnual Weather Averages in Portland
Based on weather reports collected during 1985–2015.
All Year Climate & Weather Averages in Portland
High Temp: 79 °F
Low Temp: 15 °F
Mean Temp: 47 °F
Precipitation: 1.89"
Humidity: 70%
Dew Point: 37 °F
Wind: 7 mph
Pressure: 30.02 "Hg
Visibility: 9 mi
January Climate & Weather Averages in Portland
High Temp: 32 °F
Low Temp: 15 °F
Mean Temp: 23 °F
Precipitation: 1.70"
Humidity: 68%
Dew Point: 14 °F
Wind: 7 mph
Pressure: 30.05 "Hg
Visibility: 9 mi
February Climate & Weather Averages in Portland
High Temp: 34 °F
Low Temp: 16 °F
Mean Temp: 25 °F
Precipitation: 1.67"
Humidity: 64%
Dew Point: 14 °F
Wind: 8 mph
Pressure: 30.03 "Hg
Visibility: 10 mi
March Climate & Weather Averages in Portland
High Temp: 42 °F
Low Temp: 25 °F
Mean Temp: 33 °F
Precipitation: 1.92"
Humidity: 65%
Dew Point: 22 °F
Wind: 8 mph
Pressure: 30.06 "Hg
Visibility: 9 mi
April Climate & Weather Averages in Portland
High Temp: 53 °F
Low Temp: 35 °F
Mean Temp: 44 °F
Precipitation: 2.12"
Humidity: 65%
Dew Point: 32 °F
Wind: 8 mph
Pressure: 29.99 "Hg
Visibility: 10 mi
May Climate & Weather Averages in Portland
High Temp: 64 °F
Low Temp: 45 °F
Mean Temp: 54 °F
Precipitation: 2.15"
Humidity: 70%
Dew Point: 44 °F
Wind: 7 mph
Pressure: 30.00 "Hg
Visibility: 9 mi
June Climate & Weather Averages in Portland
High Temp: 73 °F
Low Temp: 54 °F
Mean Temp: 63 °F
Precipitation: 2.08"
Humidity: 73%
Dew Point: 54 °F
Wind: 6 mph
Pressure: 29.94 "Hg
Visibility: 9 mi
July Climate & Weather Averages in Portland
High Temp: 79 °F
Low Temp: 60 °F
Mean Temp: 69 °F
Precipitation: 1.97"
Humidity: 74%
Dew Point: 60 °F
Wind: 6 mph
Pressure: 29.94 "Hg
Visibility: 9 mi
August Climate & Weather Averages in Portland
High Temp: 78 °F
Low Temp: 59 °F
Mean Temp: 68 °F
Precipitation: 1.15"
Humidity: 75%
Dew Point: 60 °F
Wind: 5 mph
Pressure: 29.99 "Hg
Visibility: 9 mi
September Climate & Weather Averages in Portland
High Temp: 70 °F
Low Temp: 51 °F
Mean Temp: 60 °F
Precipitation: 1.65"
Humidity: 76%
Dew Point: 53 °F
Wind: 6 mph
Pressure: 30.05 "Hg
Visibility: 9 mi
October Climate & Weather Averages in Portland
High Temp: 59 °F
Low Temp: 39 °F
Mean Temp: 49 °F
Precipitation: 2.07"
Humidity: 74%
Dew Point: 41 °F
Wind: 7 mph
Pressure: 30.06 "Hg
Visibility: 9 mi
November Climate & Weather Averages in Portland
High Temp: 48 °F
Low Temp: 31 °F
Mean Temp: 39 °F
Precipitation: 2.09"
Humidity: 70%
Dew Point: 30 °F
Wind: 7 mph
Pressure: 30.08 "Hg
Visibility: 9 mi
December Climate & Weather Averages in Portland
High Temp: 38 °F
Low Temp: 21 °F
Mean Temp: 30 °F
Precipitation: 2.14"
Humidity: 70%
Dew Point: 20 °F
Wind: 7 mph
Pressure: 30.08 "Hg
Visibility: 9 mi