Humidity Levels in Washington During July

The average humidity in July is listed below for places in Washington. 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 this table, the Daily number is the average of humidity readings taken every three hours throughout the day. Morning percentages are for 7 am and Afternoon measures are for 4 pm local standard time.

Average relative humidity (%) in July
Daily Place Morning Afternoon
71 Olympia 84 50
80 Quillayute 90 64
65 Seattle 78 49
44 Spokane 57 27
44 Yakima 54 26

Highest and Lowest Humidity

Below are the averages during July for maximum and minimum humidity levels in Washington. The hours when this month's highest and lowest humidity readings usually occur are given in local standard time.

Daily high and low relative humidity (%) averages in July
High Time Place Low Time
90.6 4 am Olympia 50.2 4 pm
93.9 4 am Quillayute 64.3 4 pm
81.1 4 am Seattle 48.8 4 pm
64.2 4 am Spokane 27.1 4 pm
67.4 4 am Yakima 25.6 4 pm

World Data Center for Meteorology. Climate of the World.

Washington Humidity
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