Annual Weather Averages in Augusta State Airport
Augusta State Airport is 44 miles from North Islesboro, so the actual climate in North Islesboro can vary a bit.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in North Islesboro
High Temp: 80 °F
Low Temp: 13 °F
Mean Temp: 46 °F
Precipitation: 3.47"
Humidity: 68%
Dew Point: 35 °F
Wind: 12 mph
Pressure: 30.01 "Hg
Visibility: 9 mi
January Climate & Weather Averages in North Islesboro
High Temp: 29 °F
Low Temp: 13 °F
Mean Temp: 21 °F
Precipitation: 2.62"
Humidity: 68%
Dew Point: 11 °F
Wind: 13 mph
Pressure: 30.02 "Hg
Visibility: 9 mi
February Climate & Weather Averages in North Islesboro
High Temp: 32 °F
Low Temp: 15 °F
Mean Temp: 23 °F
Precipitation: 2.45"
Humidity: 64%
Dew Point: 12 °F
Wind: 14 mph
Pressure: 30.02 "Hg
Visibility: 9 mi
March Climate & Weather Averages in North Islesboro
High Temp: 40 °F
Low Temp: 24 °F
Mean Temp: 32 °F
Precipitation: 3.11"
Humidity: 62%
Dew Point: 19 °F
Wind: 15 mph
Pressure: 30.03 "Hg
Visibility: 9 mi
April Climate & Weather Averages in North Islesboro
High Temp: 53 °F
Low Temp: 34 °F
Mean Temp: 44 °F
Precipitation: 3.82"
Humidity: 60%
Dew Point: 29 °F
Wind: 14 mph
Pressure: 29.97 "Hg
Visibility: 10 mi
May Climate & Weather Averages in North Islesboro
High Temp: 65 °F
Low Temp: 45 °F
Mean Temp: 55 °F
Precipitation: 3.25"
Humidity: 65%
Dew Point: 42 °F
Wind: 12 mph
Pressure: 29.99 "Hg
Visibility: 10 mi
June Climate & Weather Averages in North Islesboro
High Temp: 74 °F
Low Temp: 54 °F
Mean Temp: 64 °F
Precipitation: 3.95"
Humidity: 70%
Dew Point: 53 °F
Wind: 11 mph
Pressure: 29.93 "Hg
Visibility: 9 mi
July Climate & Weather Averages in North Islesboro
High Temp: 80 °F
Low Temp: 60 °F
Mean Temp: 70 °F
Precipitation: 3.37"
Humidity: 72%
Dew Point: 60 °F
Wind: 10 mph
Pressure: 29.93 "Hg
Visibility: 9 mi
August Climate & Weather Averages in North Islesboro
High Temp: 79 °F
Low Temp: 59 °F
Mean Temp: 69 °F
Precipitation: 3.17"
Humidity: 72%
Dew Point: 59 °F
Wind: 9 mph
Pressure: 29.99 "Hg
Visibility: 9 mi
September Climate & Weather Averages in North Islesboro
High Temp: 71 °F
Low Temp: 51 °F
Mean Temp: 61 °F
Precipitation: 3.96"
Humidity: 74%
Dew Point: 52 °F
Wind: 10 mph
Pressure: 30.05 "Hg
Visibility: 9 mi
October Climate & Weather Averages in North Islesboro
High Temp: 58 °F
Low Temp: 41 °F
Mean Temp: 49 °F
Precipitation: 4.66"
Humidity: 73%
Dew Point: 40 °F
Wind: 12 mph
Pressure: 30.05 "Hg
Visibility: 10 mi
November Climate & Weather Averages in North Islesboro
High Temp: 45 °F
Low Temp: 30 °F
Mean Temp: 38 °F
Precipitation: 3.93"
Humidity: 70%
Dew Point: 29 °F
Wind: 13 mph
Pressure: 30.07 "Hg
Visibility: 9 mi
December Climate & Weather Averages in North Islesboro
High Temp: 35 °F
Low Temp: 20 °F
Mean Temp: 28 °F
Precipitation: 3.40"
Humidity: 72%
Dew Point: 19 °F
Wind: 13 mph
Pressure: 30.04 "Hg
Visibility: 9 mi