Humidity Levels in South Dakota During August

The average humidity in August 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 August
Daily Place Morning Afternoon
64 Aberdeen 86 43
67 Huron 88 45
53 Rapid City 55 36
68 Sioux Falls 85 49

Highest and Lowest Humidity

Below are the averages during August 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 August
High Time Place Low Time
85.8 6 am Aberdeen 42.9 3 pm
88.3 6 am Huron 44.6 3 pm
71.3 5 am Rapid City 34.7 2 pm
85.3 6 am Sioux Falls 49.3 3 pm

World Data Center for Meteorology. Climate of the World.

South Dakota Humidity
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