Humidity Levels in Oregon During April





The average humidity in April 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 April
Daily Place Morning Afternoon
80 Astoria 88 69
77 Eugene 89 58
65 Medford 83 44
58 Pendleton 69 42
72 Portland 85 55
74 Salem 86 57

Highest and Lowest Humidity

Below are the averages during April 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 April
High Time Place Low Time
88.4 4 am Astoria 68.1 1 pm
90.1 4 am Eugene 58.0 4 pm
83.6 4 am Medford 43.7 4 pm
70.6 4 am Pendleton 42.2 4 pm
85.1 4 am Portland 55.4 4 pm
87.1 4 am Salem 56.6 4 pm
Reference

World Data Center for Meteorology. Climate of the World.

Oregon Humidity
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