Annual Weather Averages in Portland-Troutdale Airport
Portland-Troutdale Airport is 27 miles from Stevenson, so the actual climate in Stevenson can vary a bit.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Stevenson
High Temp: 83 °F
Low Temp: 36 °F
Mean Temp: 54 °F
Precipitation: 3.46"
Humidity: 70%
Dew Point: 44 °F
Wind: 11 mph
Pressure: 30.06 "Hg
Visibility: 11 mi
January Climate & Weather Averages in Stevenson
High Temp: 46 °F
Low Temp: 37 °F
Mean Temp: 42 °F
Precipitation: 5.43"
Humidity: 79%
Dew Point: 36 °F
Wind: 21 mph
Pressure: 30.10 "Hg
Visibility: 9 mi
February Climate & Weather Averages in Stevenson
High Temp: 50 °F
Low Temp: 37 °F
Mean Temp: 44 °F
Precipitation: 3.88"
Humidity: 75%
Dew Point: 36 °F
Wind: 18 mph
Pressure: 30.08 "Hg
Visibility: 10 mi
March Climate & Weather Averages in Stevenson
High Temp: 56 °F
Low Temp: 39 °F
Mean Temp: 48 °F
Precipitation: 4.42"
Humidity: 72%
Dew Point: 39 °F
Wind: 11 mph
Pressure: 30.07 "Hg
Visibility: 11 mi
April Climate & Weather Averages in Stevenson
High Temp: 62 °F
Low Temp: 43 °F
Mean Temp: 52 °F
Precipitation: 3.56"
Humidity: 68%
Dew Point: 42 °F
Wind: 8 mph
Pressure: 30.06 "Hg
Visibility: 11 mi
May Climate & Weather Averages in Stevenson
High Temp: 69 °F
Low Temp: 48 °F
Mean Temp: 59 °F
Precipitation: 2.74"
Humidity: 66%
Dew Point: 47 °F
Wind: 6 mph
Pressure: 30.04 "Hg
Visibility: 11 mi
June Climate & Weather Averages in Stevenson
High Temp: 74 °F
Low Temp: 53 °F
Mean Temp: 63 °F
Precipitation: 2.21"
Humidity: 63%
Dew Point: 51 °F
Wind: 6 mph
Pressure: 30.03 "Hg
Visibility: 12 mi
July Climate & Weather Averages in Stevenson
High Temp: 82 °F
Low Temp: 57 °F
Mean Temp: 69 °F
Precipitation: 0.63"
Humidity: 59%
Dew Point: 54 °F
Wind: 5 mph
Pressure: 30.03 "Hg
Visibility: 12 mi
August Climate & Weather Averages in Stevenson
High Temp: 83 °F
Low Temp: 56 °F
Mean Temp: 69 °F
Precipitation: 0.66"
Humidity: 59%
Dew Point: 54 °F
Wind: 5 mph
Pressure: 30.00 "Hg
Visibility: 11 mi
September Climate & Weather Averages in Stevenson
High Temp: 76 °F
Low Temp: 52 °F
Mean Temp: 64 °F
Precipitation: 1.88"
Humidity: 65%
Dew Point: 51 °F
Wind: 5 mph
Pressure: 30.01 "Hg
Visibility: 11 mi
October Climate & Weather Averages in Stevenson
High Temp: 64 °F
Low Temp: 46 °F
Mean Temp: 55 °F
Precipitation: 4.14"
Humidity: 75%
Dew Point: 47 °F
Wind: 8 mph
Pressure: 30.07 "Hg
Visibility: 10 mi
November Climate & Weather Averages in Stevenson
High Temp: 53 °F
Low Temp: 41 °F
Mean Temp: 47 °F
Precipitation: 6.06"
Humidity: 79%
Dew Point: 41 °F
Wind: 15 mph
Pressure: 30.09 "Hg
Visibility: 9 mi
December Climate & Weather Averages in Stevenson
High Temp: 46 °F
Low Temp: 36 °F
Mean Temp: 41 °F
Precipitation: 5.95"
Humidity: 80%
Dew Point: 35 °F
Wind: 20 mph
Pressure: 30.11 "Hg
Visibility: 9 mi