Humidity Levels in Oregon During October

The average humidity in October is listed below for places in Oregon. 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 7 am and Afternoon measures are for 4 pm local standard time.

Average relative humidity (%) in October
Daily Place Morning Afternoon
83 Astoria 90 73
81 Eugene 94 61
70 Medford 88 44
59 Pendleton 71 44
78 Portland 90 60
80 Salem 91 60

Highest and Lowest Humidity

Below are the averages during October for maximum and minimum humidity levels in Oregon. 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 October
High Time Place Low Time
89.7 7 am Astoria 70.9 1 pm
93.7 7 am Eugene 60.8 4 pm
88.2 7 am Medford 43.9 4 pm
71.0 4 am Pendleton 43.5 4 pm
90.2 7 am Portland 59.8 4 pm
91.2 7 am Salem 60.4 4 pm

World Data Center for Meteorology. Climate of the World.

Oregon Humidity
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