Humidity Levels in Arizona During September

The average humidity in September 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 relative humidity (%) in September
Daily Place Morning Afternoon
55 Flagstaff 62 37
36 Phoenix 45 23
42 Tucson 51 28
45 Winslow 55 28
40 Yuma 53 23

Highest and Lowest Humidity

Below are the averages during September for maximum and minimum humidity levels in Arizona. 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 September
High Time Place Low Time
74.0 5 am Flagstaff 35.5 2 pm
49.5 5 am Phoenix 22.7 5 pm
57.3 5 am Tucson 26.6 2 pm
64.0 5 am Winslow 27.8 2 pm
56.7 5 am Yuma 23.3 5 pm

World Data Center for Meteorology. Climate of the World.

Arizona Humidity
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