Annual Weather Averages in Kalispell - Glacier Park International
Kalispell - Glacier Park International is 48 miles from Mount Custer, so the actual climate in Mount Custer can vary a bit.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Mount Custer
High Temp: 83 °F
Low Temp: 18 °F
Mean Temp: 44 °F
Precipitation: 1.40"
Humidity: 67%
Dew Point: 33 °F
Wind: 9 mph
Pressure: 30.04 "Hg
Visibility: 9 mi
January Climate & Weather Averages in Mount Custer
High Temp: 32 °F
Low Temp: 18 °F
Mean Temp: 25 °F
Precipitation: 1.39"
Humidity: 83%
Dew Point: 21 °F
Wind: 7 mph
Pressure: 30.16 "Hg
Visibility: 8 mi
February Climate & Weather Averages in Mount Custer
High Temp: 36 °F
Low Temp: 19 °F
Mean Temp: 27 °F
Precipitation: 1.00"
Humidity: 77%
Dew Point: 21 °F
Wind: 8 mph
Pressure: 30.11 "Hg
Visibility: 9 mi
March Climate & Weather Averages in Mount Custer
High Temp: 46 °F
Low Temp: 25 °F
Mean Temp: 36 °F
Precipitation: 1.10"
Humidity: 68%
Dew Point: 26 °F
Wind: 10 mph
Pressure: 30.04 "Hg
Visibility: 9 mi
April Climate & Weather Averages in Mount Custer
High Temp: 55 °F
Low Temp: 31 °F
Mean Temp: 43 °F
Precipitation: 1.33"
Humidity: 60%
Dew Point: 30 °F
Wind: 12 mph
Pressure: 29.99 "Hg
Visibility: 10 mi
May Climate & Weather Averages in Mount Custer
High Temp: 65 °F
Low Temp: 39 °F
Mean Temp: 52 °F
Precipitation: 1.82"
Humidity: 58%
Dew Point: 37 °F
Wind: 12 mph
Pressure: 29.97 "Hg
Visibility: 10 mi
June Climate & Weather Averages in Mount Custer
High Temp: 72 °F
Low Temp: 45 °F
Mean Temp: 58 °F
Precipitation: 2.78"
Humidity: 61%
Dew Point: 45 °F
Wind: 10 mph
Pressure: 29.94 "Hg
Visibility: 10 mi
July Climate & Weather Averages in Mount Custer
High Temp: 83 °F
Low Temp: 48 °F
Mean Temp: 65 °F
Precipitation: 1.13"
Humidity: 52%
Dew Point: 47 °F
Wind: 9 mph
Pressure: 29.96 "Hg
Visibility: 10 mi
August Climate & Weather Averages in Mount Custer
High Temp: 82 °F
Low Temp: 46 °F
Mean Temp: 64 °F
Precipitation: 0.81"
Humidity: 50%
Dew Point: 45 °F
Wind: 9 mph
Pressure: 29.96 "Hg
Visibility: 10 mi
September Climate & Weather Averages in Mount Custer
High Temp: 71 °F
Low Temp: 39 °F
Mean Temp: 55 °F
Precipitation: 1.19"
Humidity: 60%
Dew Point: 40 °F
Wind: 8 mph
Pressure: 30.01 "Hg
Visibility: 10 mi
October Climate & Weather Averages in Mount Custer
High Temp: 55 °F
Low Temp: 30 °F
Mean Temp: 42 °F
Precipitation: 1.38"
Humidity: 72%
Dew Point: 33 °F
Wind: 8 mph
Pressure: 30.08 "Hg
Visibility: 9 mi
November Climate & Weather Averages in Mount Custer
High Temp: 41 °F
Low Temp: 25 °F
Mean Temp: 33 °F
Precipitation: 1.32"
Humidity: 79%
Dew Point: 27 °F
Wind: 7 mph
Pressure: 30.11 "Hg
Visibility: 9 mi
December Climate & Weather Averages in Mount Custer
High Temp: 31 °F
Low Temp: 18 °F
Mean Temp: 25 °F
Precipitation: 1.52"
Humidity: 82%
Dew Point: 21 °F
Wind: 6 mph
Pressure: 30.14 "Hg
Visibility: 8 mi