Humidity Levels in Wisconsin During September

The average humidity in September is listed below for places in Wisconsin. 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 September
Daily Place Morning Afternoon
77 Green Bay 89 60
77 La Crosse 92 58
77 Madison 92 58
75 Milwaukee 87 63

Highest and Lowest Humidity

Below are the averages during September for maximum and minimum humidity levels in Wisconsin. 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
89.1 6 am Green Bay 59.7 3 pm
91.5 6 am La Crosse 57.9 3 pm
91.8 6 am Madison 57.6 3 pm
86.6 6 am Milwaukee 62.7 3 pm

World Data Center for Meteorology. Climate of the World.

Wisconsin Humidity
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