Humidity Levels in Idaho During May

The average humidity in May is listed below for places in Idaho. 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 at 7 am for Lewiston and 8 am for Boise and Pocatello. Afternoon readings are at 4 pm for Lewiston and 5 pm for Boise and Pocatello, local standard time.

Average relative humidity (%) in May
Daily Place Morning Afternoon
49 Boise 57 31
Lewiston 68 39
52 Pocatello 60 35

Highest and Lowest Humidity

Below are the averages during May for maximum and minimum humidity levels in Idaho. 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
67.2 5 am Boise 31.4 5 pm
74.8 4 am Lewiston 38.5 4 pm
70.3 5 am Pocatello 34.9 5 pm

World Data Center for Meteorology. Climate of the World.

Idaho Humidity
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