Humidity Levels in Idaho During December

The average humidity in December 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 December
Daily Place Morning Afternoon
75 Boise 79 68
73 Lewiston 81 73
75 Pocatello 80 70

Highest and Lowest Humidity

Below are the averages during December 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 December
High Time Place Low Time
79.1 8 am Boise 64.9 2 pm
81.6 4 am Lewiston 70.6 1 pm
80.1 8 am Pocatello 65.9 2 pm

World Data Center for Meteorology. Climate of the World.

Idaho Humidity
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