Humidity Levels in Pennsylvania During April





The average humidity in April is listed below for places in Pennsylvania. 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
61 Allentown 74 47
68 Erie 75 60
59 Harrisburg 71 47
60 Philadelphia 70 48
60 Pittsburgh 73 48
60 Wilkes-Barre & Scranton 72 49
61 Williamsport 75 46

Highest and Lowest Humidity

Below are the averages during April for maximum and minimum humidity levels in Pennsylvania. 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
74.5 4 am Allentown 46.9 4 pm
75.0 4 am Erie 59.5 4 pm
71.2 7 am Harrisburg 47.0 4 pm
72.6 4 am Philadelphia 47.8 4 pm
72.5 7 am Pittsburgh 47.8 4 pm
71.6 7 am Wilkes-Barre & Scranton 49.0 4 pm
75.8 4 am Williamsport 46.4 4 pm
Reference

World Data Center for Meteorology. Climate of the World.

Pennsylvania Humidity
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