Humidity Levels in Washington During January

The average humidity in January 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 January
Daily Place Morning Afternoon
88 Olympia 91 80
89 Quillayute 91 84
78 Seattle 81 74
83 Spokane 85 78
78 Yakima 83 70

Highest and Lowest Humidity

Below are the averages during January 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 January
High Time Place Low Time
91.2 4 am Olympia 80.0 4 pm
91.3 7 am Quillayute 82.6 1 pm
81.4 7 am Seattle 73.8 1 pm
85.4 7 am Spokane 77.9 1 pm
82.5 7 am Yakima 68.7 1 pm

World Data Center for Meteorology. Climate of the World.

Washington Humidity
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