Average humidity in Bethlehem (PA)
The mean monthly relative humidity over the year in Bethlehem (Pennsylvania), the United States of America.
- On average, September is the most humid month, at 74.0%.
- On average, April is the least humid month, at 61.0%.
- The average annual percentage of humidity is 68%.
Forecast for Bethlehem (PA)
overcast and heavy rain
broken clouds and no rain
partly cloudy and no rain