Annual Weather Averages Near The Three Sisters
Averages are for Mount Isa Amo, which is 15 miles from The Three Sisters.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in The Three Sisters
High Temp: 99 °F
Low Temp: 47 °F
Mean Temp: 76 °F
Precipitation: 1.37"
Humidity: 39%
Dew Point: 47 °F
Wind: 14 mph
Pressure: 29.90 "Hg
Visibility: 14 mi
January Climate & Weather Averages in The Three Sisters
High Temp: 98 °F
Low Temp: 74 °F
Mean Temp: 86 °F
Precipitation: 3.89"
Humidity: 51%
Dew Point: 63 °F
Wind: 14 mph
Pressure: 29.71 "Hg
Visibility: 13 mi
February Climate & Weather Averages in The Three Sisters
High Temp: 96 °F
Low Temp: 73 °F
Mean Temp: 85 °F
Precipitation: 3.72"
Humidity: 54%
Dew Point: 63 °F
Wind: 14 mph
Pressure: 29.72 "Hg
Visibility: 14 mi
March Climate & Weather Averages in The Three Sisters
High Temp: 95 °F
Low Temp: 71 °F
Mean Temp: 82 °F
Precipitation: 1.98"
Humidity: 46%
Dew Point: 58 °F
Wind: 14 mph
Pressure: 29.81 "Hg
Visibility: 14 mi
April Climate & Weather Averages in The Three Sisters
High Temp: 91 °F
Low Temp: 65 °F
Mean Temp: 78 °F
Precipitation: 0.41"
Humidity: 36%
Dew Point: 48 °F
Wind: 15 mph
Pressure: 29.93 "Hg
Visibility: 14 mi
May Climate & Weather Averages in The Three Sisters
High Temp: 83 °F
Low Temp: 56 °F
Mean Temp: 69 °F
Precipitation: 0.31"
Humidity: 40%
Dew Point: 42 °F
Wind: 14 mph
Pressure: 30.02 "Hg
Visibility: 14 mi
June Climate & Weather Averages in The Three Sisters
High Temp: 78 °F
Low Temp: 49 °F
Mean Temp: 63 °F
Precipitation: 0.32"
Humidity: 43%
Dew Point: 39 °F
Wind: 14 mph
Pressure: 30.07 "Hg
Visibility: 14 mi
July Climate & Weather Averages in The Three Sisters
High Temp: 78 °F
Low Temp: 47 °F
Mean Temp: 62 °F
Precipitation: 0.12"
Humidity: 38%
Dew Point: 35 °F
Wind: 13 mph
Pressure: 30.08 "Hg
Visibility: 14 mi
August Climate & Weather Averages in The Three Sisters
High Temp: 82 °F
Low Temp: 49 °F
Mean Temp: 66 °F
Precipitation: 0.09"
Humidity: 31%
Dew Point: 32 °F
Wind: 14 mph
Pressure: 30.05 "Hg
Visibility: 14 mi
September Climate & Weather Averages in The Three Sisters
High Temp: 90 °F
Low Temp: 57 °F
Mean Temp: 74 °F
Precipitation: 0.34"
Humidity: 28%
Dew Point: 36 °F
Wind: 14 mph
Pressure: 29.98 "Hg
Visibility: 14 mi
October Climate & Weather Averages in The Three Sisters
High Temp: 96 °F
Low Temp: 65 °F
Mean Temp: 80 °F
Precipitation: 0.75"
Humidity: 27%
Dew Point: 40 °F
Wind: 15 mph
Pressure: 29.90 "Hg
Visibility: 13 mi
November Climate & Weather Averages in The Three Sisters
High Temp: 98 °F
Low Temp: 70 °F
Mean Temp: 84 °F
Precipitation: 1.73"
Humidity: 34%
Dew Point: 49 °F
Wind: 16 mph
Pressure: 29.81 "Hg
Visibility: 13 mi
December Climate & Weather Averages in The Three Sisters
High Temp: 99 °F
Low Temp: 73 °F
Mean Temp: 86 °F
Precipitation: 2.82"
Humidity: 42%
Dew Point: 57 °F
Wind: 15 mph
Pressure: 29.74 "Hg
Visibility: 13 mi