Currently: 44 °F. Mostly cloudy. (Weather station: Missoula International Airport, USA). See more current weatherAnnual Weather Averages in Missoula International Airport
Missoula International Airport is 46 miles from Hamilton, so the actual climate in Hamilton can vary a bit.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Hamilton
High Temp: 87 °F
Low Temp: 19 °F
Mean Temp: 46 °F
Precipitation: 1.18"
Humidity: 63%
Dew Point: 32 °F
Wind: 7 mph
Pressure: 30.07 "Hg
Visibility: 10 mi
January Climate & Weather Averages in Hamilton
High Temp: 33 °F
Low Temp: 19 °F
Mean Temp: 26 °F
Precipitation: 0.97"
Humidity: 81%
Dew Point: 21 °F
Wind: 4 mph
Pressure: 30.20 "Hg
Visibility: 8 mi
February Climate & Weather Averages in Hamilton
High Temp: 38 °F
Low Temp: 21 °F
Mean Temp: 30 °F
Precipitation: 0.96"
Humidity: 74%
Dew Point: 22 °F
Wind: 6 mph
Pressure: 30.14 "Hg
Visibility: 9 mi
March Climate & Weather Averages in Hamilton
High Temp: 49 °F
Low Temp: 27 °F
Mean Temp: 38 °F
Precipitation: 0.89"
Humidity: 64%
Dew Point: 26 °F
Wind: 7 mph
Pressure: 30.07 "Hg
Visibility: 10 mi
April Climate & Weather Averages in Hamilton
High Temp: 57 °F
Low Temp: 32 °F
Mean Temp: 45 °F
Precipitation: 1.37"
Humidity: 58%
Dew Point: 30 °F
Wind: 9 mph
Pressure: 30.02 "Hg
Visibility: 11 mi
May Climate & Weather Averages in Hamilton
High Temp: 67 °F
Low Temp: 40 °F
Mean Temp: 53 °F
Precipitation: 1.76"
Humidity: 56%
Dew Point: 37 °F
Wind: 9 mph
Pressure: 29.99 "Hg
Visibility: 11 mi
June Climate & Weather Averages in Hamilton
High Temp: 75 °F
Low Temp: 47 °F
Mean Temp: 61 °F
Precipitation: 2.02"
Humidity: 56%
Dew Point: 44 °F
Wind: 9 mph
Pressure: 29.96 "Hg
Visibility: 11 mi
July Climate & Weather Averages in Hamilton
High Temp: 87 °F
Low Temp: 52 °F
Mean Temp: 69 °F
Precipitation: 0.86"
Humidity: 43%
Dew Point: 45 °F
Wind: 8 mph
Pressure: 29.97 "Hg
Visibility: 11 mi
August Climate & Weather Averages in Hamilton
High Temp: 85 °F
Low Temp: 50 °F
Mean Temp: 68 °F
Precipitation: 0.84"
Humidity: 43%
Dew Point: 43 °F
Wind: 7 mph
Pressure: 29.98 "Hg
Visibility: 11 mi
September Climate & Weather Averages in Hamilton
High Temp: 74 °F
Low Temp: 42 °F
Mean Temp: 58 °F
Precipitation: 0.97"
Humidity: 53%
Dew Point: 39 °F
Wind: 6 mph
Pressure: 30.03 "Hg
Visibility: 11 mi
October Climate & Weather Averages in Hamilton
High Temp: 57 °F
Low Temp: 33 °F
Mean Temp: 45 °F
Precipitation: 1.22"
Humidity: 66%
Dew Point: 33 °F
Wind: 5 mph
Pressure: 30.11 "Hg
Visibility: 10 mi
November Climate & Weather Averages in Hamilton
High Temp: 41 °F
Low Temp: 25 °F
Mean Temp: 33 °F
Precipitation: 1.16"
Humidity: 77%
Dew Point: 26 °F
Wind: 5 mph
Pressure: 30.16 "Hg
Visibility: 9 mi
December Climate & Weather Averages in Hamilton
High Temp: 32 °F
Low Temp: 19 °F
Mean Temp: 26 °F
Precipitation: 1.11"
Humidity: 81%
Dew Point: 21 °F
Wind: 5 mph
Pressure: 30.19 "Hg
Visibility: 8 mi