Currently: 20 °F. Mostly cloudy. (Weather station: Portland - Portland International Jetport, USA). See more current weatherAnnual Weather Averages in Portland
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Portland
High Temp: 79 °F
Low Temp: 15 °F
Mean Temp: 47 °F
Precipitation: 3.93"
Humidity: 70%
Dew Point: 37 °F
Wind: 12 mph
Pressure: 30.02 "Hg
Visibility: 9 mi
January Climate & Weather Averages in Portland
High Temp: 32 °F
Low Temp: 15 °F
Mean Temp: 24 °F
Precipitation: 3.35"
Humidity: 68%
Dew Point: 14 °F
Wind: 13 mph
Pressure: 30.04 "Hg
Visibility: 9 mi
February Climate & Weather Averages in Portland
High Temp: 35 °F
Low Temp: 17 °F
Mean Temp: 26 °F
Precipitation: 3.62"
Humidity: 65%
Dew Point: 15 °F
Wind: 14 mph
Pressure: 30.03 "Hg
Visibility: 9 mi
March Climate & Weather Averages in Portland
High Temp: 42 °F
Low Temp: 25 °F
Mean Temp: 33 °F
Precipitation: 3.74"
Humidity: 64%
Dew Point: 22 °F
Wind: 14 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: 4.25"
Humidity: 64%
Dew Point: 32 °F
Wind: 14 mph
Pressure: 29.98 "Hg
Visibility: 9 mi
May Climate & Weather Averages in Portland
High Temp: 63 °F
Low Temp: 45 °F
Mean Temp: 54 °F
Precipitation: 3.64"
Humidity: 70%
Dew Point: 44 °F
Wind: 12 mph
Pressure: 30.00 "Hg
Visibility: 9 mi
June Climate & Weather Averages in Portland
High Temp: 73 °F
Low Temp: 54 °F
Mean Temp: 64 °F
Precipitation: 4.15"
Humidity: 73%
Dew Point: 54 °F
Wind: 11 mph
Pressure: 29.94 "Hg
Visibility: 9 mi
July Climate & Weather Averages in Portland
High Temp: 79 °F
Low Temp: 60 °F
Mean Temp: 70 °F
Precipitation: 3.69"
Humidity: 74%
Dew Point: 61 °F
Wind: 10 mph
Pressure: 29.94 "Hg
Visibility: 9 mi
August Climate & Weather Averages in Portland
High Temp: 78 °F
Low Temp: 59 °F
Mean Temp: 69 °F
Precipitation: 3.16"
Humidity: 74%
Dew Point: 60 °F
Wind: 9 mph
Pressure: 29.99 "Hg
Visibility: 9 mi
September Climate & Weather Averages in Portland
High Temp: 71 °F
Low Temp: 52 °F
Mean Temp: 61 °F
Precipitation: 3.78"
Humidity: 76%
Dew Point: 53 °F
Wind: 10 mph
Pressure: 30.06 "Hg
Visibility: 9 mi
October Climate & Weather Averages in Portland
High Temp: 59 °F
Low Temp: 40 °F
Mean Temp: 50 °F
Precipitation: 5.27"
Humidity: 74%
Dew Point: 42 °F
Wind: 11 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: 4.19"
Humidity: 71%
Dew Point: 30 °F
Wind: 12 mph
Pressure: 30.09 "Hg
Visibility: 9 mi
December Climate & Weather Averages in Portland
High Temp: 38 °F
Low Temp: 22 °F
Mean Temp: 30 °F
Precipitation: 4.36"
Humidity: 71%
Dew Point: 21 °F
Wind: 12 mph
Pressure: 30.08 "Hg
Visibility: 9 mi