Annual Weather Averages Near Joint Base Lewis McChord
Averages are for Tacoma Narrows Airport, which is 11 miles from Joint Base Lewis McChord.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Joint Base Lewis McChord
High Temp: 76 °F
Low Temp: 37 °F
Mean Temp: 53 °F
Precipitation: 2.94"
Humidity: 74%
Dew Point: 44 °F
Wind: 10 mph
Pressure: 30.05 "Hg
Visibility: 10 mi
January Climate & Weather Averages in Joint Base Lewis McChord
High Temp: 47 °F
Low Temp: 38 °F
Mean Temp: 42 °F
Precipitation: 5.26"
Humidity: 86%
Dew Point: 38 °F
Wind: 11 mph
Pressure: 30.07 "Hg
Visibility: 9 mi
February Climate & Weather Averages in Joint Base Lewis McChord
High Temp: 49 °F
Low Temp: 38 °F
Mean Temp: 43 °F
Precipitation: 3.41"
Humidity: 80%
Dew Point: 37 °F
Wind: 11 mph
Pressure: 30.06 "Hg
Visibility: 10 mi
March Climate & Weather Averages in Joint Base Lewis McChord
High Temp: 53 °F
Low Temp: 40 °F
Mean Temp: 46 °F
Precipitation: 3.98"
Humidity: 75%
Dew Point: 38 °F
Wind: 11 mph
Pressure: 30.05 "Hg
Visibility: 10 mi
April Climate & Weather Averages in Joint Base Lewis McChord
High Temp: 58 °F
Low Temp: 43 °F
Mean Temp: 50 °F
Precipitation: 2.50"
Humidity: 70%
Dew Point: 41 °F
Wind: 11 mph
Pressure: 30.05 "Hg
Visibility: 11 mi
May Climate & Weather Averages in Joint Base Lewis McChord
High Temp: 64 °F
Low Temp: 48 °F
Mean Temp: 56 °F
Precipitation: 1.74"
Humidity: 67%
Dew Point: 45 °F
Wind: 10 mph
Pressure: 30.04 "Hg
Visibility: 11 mi
June Climate & Weather Averages in Joint Base Lewis McChord
High Temp: 69 °F
Low Temp: 52 °F
Mean Temp: 61 °F
Precipitation: 1.23"
Humidity: 66%
Dew Point: 49 °F
Wind: 10 mph
Pressure: 30.04 "Hg
Visibility: 11 mi
July Climate & Weather Averages in Joint Base Lewis McChord
High Temp: 75 °F
Low Temp: 56 °F
Mean Temp: 65 °F
Precipitation: 0.48"
Humidity: 64%
Dew Point: 53 °F
Wind: 9 mph
Pressure: 30.05 "Hg
Visibility: 12 mi
August Climate & Weather Averages in Joint Base Lewis McChord
High Temp: 76 °F
Low Temp: 56 °F
Mean Temp: 66 °F
Precipitation: 0.66"
Humidity: 65%
Dew Point: 53 °F
Wind: 8 mph
Pressure: 30.02 "Hg
Visibility: 11 mi
September Climate & Weather Averages in Joint Base Lewis McChord
High Temp: 70 °F
Low Temp: 53 °F
Mean Temp: 61 °F
Precipitation: 1.30"
Humidity: 71%
Dew Point: 51 °F
Wind: 9 mph
Pressure: 30.02 "Hg
Visibility: 11 mi
October Climate & Weather Averages in Joint Base Lewis McChord
High Temp: 59 °F
Low Temp: 47 °F
Mean Temp: 53 °F
Precipitation: 3.67"
Humidity: 80%
Dew Point: 47 °F
Wind: 10 mph
Pressure: 30.07 "Hg
Visibility: 9 mi
November Climate & Weather Averages in Joint Base Lewis McChord
High Temp: 51 °F
Low Temp: 41 °F
Mean Temp: 46 °F
Precipitation: 5.58"
Humidity: 84%
Dew Point: 41 °F
Wind: 11 mph
Pressure: 30.06 "Hg
Visibility: 9 mi
December Climate & Weather Averages in Joint Base Lewis McChord
High Temp: 46 °F
Low Temp: 37 °F
Mean Temp: 41 °F
Precipitation: 5.44"
Humidity: 86%
Dew Point: 37 °F
Wind: 11 mph
Pressure: 30.08 "Hg
Visibility: 9 mi