Humidity Levels in Iowa During June

The average humidity in June is listed below for places in Iowa. 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 6 am and Afternoon measures are for 3 pm local standard time.

Average relative humidity (%) in June
Daily Place Morning Afternoon
65 Des Moines 79 51
Dubuque 82 55
66 Sioux City 81 50
68 Waterloo 83 51

Highest and Lowest Humidity

Below are the averages during June for maximum and minimum humidity levels in Iowa. 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 June
High Time Place Low Time
79.4 6 am Des Moines 50.7 3 pm
81.7 6 am Dubuque 55.0 3 pm
81.4 6 am Sioux City 50.1 3 pm
83.4 3 am Waterloo 51.0 3 pm

World Data Center for Meteorology. Climate of the World.

Iowa Humidity
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