Annual Weather Averages Near Glennallen
Averages are for Gulkana Airport, which is 4 miles from Glennallen.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Glennallen
High Temp: 69 °F
Low Temp: -11 °F
Mean Temp: 28 °F
Precipitation: 1.02"
Humidity: 69%
Dew Point: 19 °F
Wind: 8 mph
Pressure: 29.95 "Hg
Visibility: 13 mi
January Climate & Weather Averages in Glennallen
High Temp: 5 °F
Low Temp: -11 °F
Mean Temp: -3 °F
Precipitation: 0.76"
Humidity: 80%
Dew Point: -7 °F
Wind: 3 mph
Pressure: 30.04 "Hg
Visibility: 10 mi
February Climate & Weather Averages in Glennallen
High Temp: 16 °F
Low Temp: -5 °F
Mean Temp: 6 °F
Precipitation: 0.66"
Humidity: 77%
Dew Point: 1 °F
Wind: 5 mph
Pressure: 30.02 "Hg
Visibility: 11 mi
March Climate & Weather Averages in Glennallen
High Temp: 28 °F
Low Temp: 1 °F
Mean Temp: 15 °F
Precipitation: 0.43"
Humidity: 64%
Dew Point: 5 °F
Wind: 8 mph
Pressure: 30.01 "Hg
Visibility: 14 mi
April Climate & Weather Averages in Glennallen
High Temp: 45 °F
Low Temp: 21 °F
Mean Temp: 33 °F
Precipitation: 0.26"
Humidity: 56%
Dew Point: 19 °F
Wind: 10 mph
Pressure: 29.91 "Hg
Visibility: 16 mi
May Climate & Weather Averages in Glennallen
High Temp: 58 °F
Low Temp: 33 °F
Mean Temp: 46 °F
Precipitation: 0.85"
Humidity: 52%
Dew Point: 29 °F
Wind: 12 mph
Pressure: 29.93 "Hg
Visibility: 16 mi
June Climate & Weather Averages in Glennallen
High Temp: 67 °F
Low Temp: 43 °F
Mean Temp: 55 °F
Precipitation: 1.42"
Humidity: 56%
Dew Point: 39 °F
Wind: 11 mph
Pressure: 29.89 "Hg
Visibility: 16 mi
July Climate & Weather Averages in Glennallen
High Temp: 69 °F
Low Temp: 47 °F
Mean Temp: 58 °F
Precipitation: 1.70"
Humidity: 63%
Dew Point: 45 °F
Wind: 11 mph
Pressure: 29.93 "Hg
Visibility: 15 mi
August Climate & Weather Averages in Glennallen
High Temp: 65 °F
Low Temp: 43 °F
Mean Temp: 54 °F
Precipitation: 1.97"
Humidity: 68%
Dew Point: 43 °F
Wind: 11 mph
Pressure: 29.90 "Hg
Visibility: 15 mi
September Climate & Weather Averages in Glennallen
High Temp: 54 °F
Low Temp: 33 °F
Mean Temp: 44 °F
Precipitation: 1.44"
Humidity: 70%
Dew Point: 34 °F
Wind: 10 mph
Pressure: 29.86 "Hg
Visibility: 14 mi
October Climate & Weather Averages in Glennallen
High Temp: 36 °F
Low Temp: 19 °F
Mean Temp: 28 °F
Precipitation: 1.01"
Humidity: 78%
Dew Point: 22 °F
Wind: 7 mph
Pressure: 29.88 "Hg
Visibility: 12 mi
November Climate & Weather Averages in Glennallen
High Temp: 15 °F
Low Temp: -1 °F
Mean Temp: 7 °F
Precipitation: 0.88"
Humidity: 83%
Dew Point: 3 °F
Wind: 4 mph
Pressure: 29.95 "Hg
Visibility: 10 mi
December Climate & Weather Averages in Glennallen
High Temp: 8 °F
Low Temp: -9 °F
Mean Temp: 0 °F
Precipitation: 0.85"
Humidity: 82%
Dew Point: -4 °F
Wind: 4 mph
Pressure: 30.03 "Hg
Visibility: 10 mi