Annual Average Humidity in Arizona

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The average humidity year round is listed below for places in Arizona. 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 8 am and Afternoon measures are for 5 pm local standard time.

Average yearly relative humidity (%)
Daily Place Morning Afternoon
53 Flagstaff 59 39
37 Phoenix 47 23
38 Tucson 48 25
46 Winslow 55 30
37 Yuma 49 22

Highest and Lowest Humidity

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

Annual averages for daily high and low relative humidity (%)
High Time Place Low Time
68.8 5 am Flagstaff 36.6 2 pm
51.0 5 am Phoenix 22.6 5 pm
52.7 5 am Tucson 23.5 2 pm
61.6 5 am Winslow 28.9 2 pm
51.7 5 am Yuma 21.9 5 pm
Reference

World Data Center for Meteorology. Climate of the World.

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