Annual Average Humidity in Alaska

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The average humidity year round is listed below for places in Alaska. The tables give daily averages along with highest and lowest relative humidity levels.

Relative humidity measures the actual amount of moisture in the air as a percentage of the maximum amount of moisture the air can hold.

All the numbers here are averages for the years 1961 to 1990.

Average Humidity

In these tables, the Daily number is the average of humidity readings taken every three hours throughout the day. Morning percentages are for 6 am and Afternoon measures are for 3 pm local standard time.

Southeast Alaska

Daily Place Morning Afternoon
78 Annette Island 84 72
82 Juneau 87 74
85 Yakutat 90 77

South - Central Alaska

Daily Place Morning Afternoon
71 Anchorage 77 64
65 Fairbanks 73 56
71 Gulkana 78 57
78 Homer 84 71
74 Talkeetna 83 63
78 Valdez 83 70

Southwest Alaska

Daily Place Morning Afternoon
79 Bethel 85 72
85 Cold Bay 88 80
76 King Salmon 83 67
77 Kodiak 81 71
70 McGrath 79 60
87 St Paul Island 88 84

Far North Alaska

Daily Place Morning Afternoon
81 Barrow 83 80
69 Bettles 76 62
77 Kotzebue 79 74
74 Nome 77 71

Highest and Lowest Humidity

Below are averages over the year for maximum and minimum relative humidity percentages in Alaska. The hours when the highest and lowest humidity readings usually occur are given in local standard time.

Southeast Alaska

High Time Place Low Time
84.2   3 am Annette Island 71.7 3 pm
87.8   3 am Juneau 73.7 3 pm
90.1   3 am Yakutat 77.3 3 pm

South - Central Alaska

High Time Place Low Time
77.4   6 am Anchorage 63.7 3 pm
73.2   6 am Fairbanks 56.3 3 pm
79.2   3 am Gulkana 57.4 3 pm
84.4   6 am Homer 71.0 3 pm
83.4   3 am Talkeetna 62.6 3 pm
83.3   3 am Valdez 70.1 3 pm

Southwest Alaska

High Time Place Low Time
85.4   6 am Bethel 71.7 3 pm
88.2   6 am Cold Bay 80.1 3 pm
83.0   6 am King Salmon 66.5 3 pm
81.4   6 am Kodiak 71.3 3 pm
79.1   6 am McGrath 59.8 3 pm
88.4 12 am St Paul Island 83.5 3 pm

Far North Alaska

High Time Place Low Time
82.8   3 am Barrow 79.6 3 pm
76.3   3 am Bettles 61.6 3 pm
79.2   6 am Kotzebue 73.9 3 pm
76.8   6 am Nome 70.8 3 pm
Reference

World Data Center for Meteorology. Climate of the World.

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