Average humidity in Williamstown (NJ)
The mean monthly relative humidity over the year in Williamstown (New Jersey), the United States of America.
- On average, September is the most humid month, at 71.5%.
- On average, April is the least humid month, at 61.0%.
- The average annual percentage of humidity is 67%.
Forecast for Williamstown (NJ)
partly cloudy and no rain
almost clear and no rain
partly cloudy and rain