Average humidity in Harrisburg (PA)
The mean monthly relative humidity over the year in Harrisburg (Pennsylvania), the United States of America.
- On average, September is the most humid month, at 73.0%.
- On average, April is the least humid month, at 59.0%.
- The average annual percentage of humidity is 67%.
Forecast for Harrisburg (PA)
broken clouds and chance of slight rain
broken clouds and small chance of slight rain
partly cloudy and no rain