Average humidity in Horsham (PA)
The mean monthly relative humidity over the year in Horsham (Pennsylvania), 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 Horsham (PA)
partly cloudy and no rain
almost clear and no rain
clear and no rain