Annual Weather Averages in Anchorage Island
Based on weather reports collected during 2012–2021.
All Year Climate & Weather Averages in Anchorage Island
High Temp: 38 °F
Low Temp: -8 °F
Mean Temp: 13 °F
Precipitation: 0.46"
Humidity: 63%
Dew Point: 3 °F
Wind: 26 mph
Pressure: 29.11 "Hg
Visibility: 15 mi
January Climate & Weather Averages in Anchorage Island
High Temp: 38 °F
Low Temp: 29 °F
Mean Temp: 34 °F
Precipitation: 0.40"
Humidity: 61%
Dew Point: 21 °F
Wind: 26 mph
Pressure: 29.14 "Hg
Visibility: 16 mi
February Climate & Weather Averages in Anchorage Island
High Temp: 33 °F
Low Temp: 23 °F
Mean Temp: 28 °F
Precipitation: 0.46"
Humidity: 57%
Dew Point: 14 °F
Wind: 27 mph
Pressure: 29.11 "Hg
Visibility: 16 mi
March Climate & Weather Averages in Anchorage Island
High Temp: 21 °F
Low Temp: 8 °F
Mean Temp: 15 °F
Precipitation: 0.41"
Humidity: 62%
Dew Point: 4 °F
Wind: 24 mph
Pressure: 29.09 "Hg
Visibility: 15 mi
April Climate & Weather Averages in Anchorage Island
High Temp: 13 °F
Low Temp: 0 °F
Mean Temp: 6 °F
Precipitation: 0.45"
Humidity: 66%
Dew Point: -2 °F
Wind: 21 mph
Pressure: 29.12 "Hg
Visibility: 14 mi
May Climate & Weather Averages in Anchorage Island
High Temp: 9 °F
Low Temp: -5 °F
Mean Temp: 2 °F
Precipitation: 0.63"
Humidity: 66%
Dew Point: -6 °F
Wind: 26 mph
Pressure: 29.15 "Hg
Visibility: 14 mi
June Climate & Weather Averages in Anchorage Island
High Temp: 8 °F
Low Temp: -7 °F
Mean Temp: 1 °F
Precipitation: 0.75"
Humidity: 67%
Dew Point: -7 °F
Wind: 25 mph
Pressure: 29.19 "Hg
Visibility: 13 mi
July Climate & Weather Averages in Anchorage Island
High Temp: 7 °F
Low Temp: -8 °F
Mean Temp: -1 °F
Precipitation: 0.76"
Humidity: 68%
Dew Point: -8 °F
Wind: 25 mph
Pressure: 29.11 "Hg
Visibility: 13 mi
August Climate & Weather Averages in Anchorage Island
High Temp: 10 °F
Low Temp: -5 °F
Mean Temp: 2 °F
Precipitation: 0.49"
Humidity: 66%
Dew Point: -6 °F
Wind: 29 mph
Pressure: 29.08 "Hg
Visibility: 14 mi
September Climate & Weather Averages in Anchorage Island
High Temp: 11 °F
Low Temp: -4 °F
Mean Temp: 3 °F
Precipitation: 0.58"
Humidity: 65%
Dew Point: -5 °F
Wind: 26 mph
Pressure: 28.98 "Hg
Visibility: 14 mi
October Climate & Weather Averages in Anchorage Island
High Temp: 18 °F
Low Temp: 3 °F
Mean Temp: 11 °F
Precipitation: 0.20"
Humidity: 59%
Dew Point: 0 °F
Wind: 26 mph
Pressure: 29.06 "Hg
Visibility: 16 mi
November Climate & Weather Averages in Anchorage Island
High Temp: 30 °F
Low Temp: 18 °F
Mean Temp: 24 °F
Precipitation: 0.13"
Humidity: 59%
Dew Point: 12 °F
Wind: 27 mph
Pressure: 29.14 "Hg
Visibility: 17 mi
December Climate & Weather Averages in Anchorage Island
High Temp: 37 °F
Low Temp: 27 °F
Mean Temp: 32 °F
Precipitation: 0.21"
Humidity: 63%
Dew Point: 20 °F
Wind: 25 mph
Pressure: 29.15 "Hg
Visibility: 17 mi