Humidity Levels in South Dakota During May

The average humidity in May is listed below for places in South Dakota. 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. At one place, Rapid City, humidity data are for 8 am and 5 pm.

Average relative humidity (%) in May
Daily Place Morning Afternoon
62 Aberdeen 80 46
66 Huron 84 49
61 Rapid City 61 47
64 Sioux Falls 80 48

Highest and Lowest Humidity

Below are the averages during May for maximum and minimum humidity levels in South Dakota. 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 May
High Time Place Low Time
80.0 6 am Aberdeen 46.1 3 pm
83.6 6 am Huron 49.3 3 pm
75.9 5 am Rapid City 44.8 2 pm
80.3 6 am Sioux Falls 48.3 3 pm

World Data Center for Meteorology. Climate of the World.

South Dakota Humidity
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