Humidity Levels in Washington During March

The average humidity in March 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 March
Daily Place Morning Afternoon
80 Olympia 91 62
84 Quillayute 92 73
74 Seattle 83 61
70 Spokane 82 55
61 Yakima 77 41

Highest and Lowest Humidity

Below are the averages during March 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 March
High Time Place Low Time
91.2 7 am Olympia 62.0 4 pm
92.4 7 am Quillayute 72.0 1 pm
83.1 7 am Seattle 61.4 4 pm
81.6 7 am Spokane 54.9 4 pm
77.2 7 am Yakima 40.5 4 pm

World Data Center for Meteorology. Climate of the World.

Washington Humidity
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