Currently: 50 °F. Passing clouds. (Weather station: General Mitchell International Airport, USA). See more current weatherAnnual Weather Averages Near West Allis
Averages are for General Mitchell International Airport, which is 7 miles from West Allis.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in West Allis
High Temp: 81 °F
Low Temp: 17 °F
Mean Temp: 49 °F
Precipitation: 2.86"
Humidity: 69%
Dew Point: 39 °F
Wind: 16 mph
Pressure: 30.03 "Hg
Visibility: 9 mi
January Climate & Weather Averages in West Allis
High Temp: 30 °F
Low Temp: 17 °F
Mean Temp: 24 °F
Precipitation: 1.79"
Humidity: 73%
Dew Point: 17 °F
Wind: 18 mph
Pressure: 30.10 "Hg
Visibility: 8 mi
February Climate & Weather Averages in West Allis
High Temp: 33 °F
Low Temp: 20 °F
Mean Temp: 26 °F
Precipitation: 1.73"
Humidity: 70%
Dew Point: 18 °F
Wind: 18 mph
Pressure: 30.10 "Hg
Visibility: 8 mi
March Climate & Weather Averages in West Allis
High Temp: 43 °F
Low Temp: 28 °F
Mean Temp: 36 °F
Precipitation: 2.10"
Humidity: 67%
Dew Point: 26 °F
Wind: 17 mph
Pressure: 30.10 "Hg
Visibility: 8 mi
April Climate & Weather Averages in West Allis
High Temp: 53 °F
Low Temp: 37 °F
Mean Temp: 45 °F
Precipitation: 3.82"
Humidity: 65%
Dew Point: 33 °F
Wind: 18 mph
Pressure: 29.99 "Hg
Visibility: 9 mi
May Climate & Weather Averages in West Allis
High Temp: 65 °F
Low Temp: 47 °F
Mean Temp: 56 °F
Precipitation: 3.50"
Humidity: 66%
Dew Point: 44 °F
Wind: 16 mph
Pressure: 29.99 "Hg
Visibility: 9 mi
June Climate & Weather Averages in West Allis
High Temp: 76 °F
Low Temp: 58 °F
Mean Temp: 67 °F
Precipitation: 4.39"
Humidity: 68%
Dew Point: 56 °F
Wind: 14 mph
Pressure: 29.94 "Hg
Visibility: 9 mi
July Climate & Weather Averages in West Allis
High Temp: 81 °F
Low Temp: 64 °F
Mean Temp: 73 °F
Precipitation: 3.33"
Humidity: 69%
Dew Point: 61 °F
Wind: 13 mph
Pressure: 29.97 "Hg
Visibility: 9 mi
August Climate & Weather Averages in West Allis
High Temp: 80 °F
Low Temp: 64 °F
Mean Temp: 72 °F
Precipitation: 3.75"
Humidity: 71%
Dew Point: 62 °F
Wind: 12 mph
Pressure: 30.00 "Hg
Visibility: 9 mi
September Climate & Weather Averages in West Allis
High Temp: 73 °F
Low Temp: 56 °F
Mean Temp: 64 °F
Precipitation: 3.10"
Humidity: 71%
Dew Point: 54 °F
Wind: 14 mph
Pressure: 30.03 "Hg
Visibility: 9 mi
October Climate & Weather Averages in West Allis
High Temp: 60 °F
Low Temp: 44 °F
Mean Temp: 52 °F
Precipitation: 2.69"
Humidity: 68%
Dew Point: 42 °F
Wind: 16 mph
Pressure: 30.04 "Hg
Visibility: 9 mi
November Climate & Weather Averages in West Allis
High Temp: 47 °F
Low Temp: 33 °F
Mean Temp: 40 °F
Precipitation: 2.17"
Humidity: 69%
Dew Point: 30 °F
Wind: 17 mph
Pressure: 30.08 "Hg
Visibility: 9 mi
December Climate & Weather Averages in West Allis
High Temp: 35 °F
Low Temp: 23 °F
Mean Temp: 29 °F
Precipitation: 1.93"
Humidity: 74%
Dew Point: 22 °F
Wind: 17 mph
Pressure: 30.07 "Hg
Visibility: 8 mi