Annual Average Humidity in Virginia

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The average humidity year round is listed below for places in Virginia. 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 yearly relative humidity (%)
Daily Place Morning Afternoon
64 Arlington 74 52
70 Chantilly 82 53
67 Lynchburg 79 51
69 Norfolk 78 57
70 Richmond 83 52
65 Roanoke 77 50

Highest and Lowest Humidity

Below are averages over the year for maximum and minimum humidity levels in Virginia. The hours when the highest and lowest humidity readings usually occur are given in local standard time.

Annual averages for daily high and low relative humidity (%)
High Time Place Low Time
74.9 4 am Arlington 51.8 4 pm
83.3 4 am Chantilly 53.0 4 pm
79.6 4 am Lynchburg 51.3 4 pm
79.0 4 am Norfolk 56.8 1 pm
83.9 4 am Richmond 52.0 4 pm
78.0 4 am Roanoke 50.4 4 pm
Reference

World Data Center for Meteorology. Climate of the World.

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