Average humidity in Portland (TX)
The mean monthly relative humidity over the year in Portland (Texas), the United States of America.
- On average, May is the most humid month, at 79.0%.
- On average, August is the least humid month, at 74.0%.
- The average annual percentage of humidity is 76%.
Forecast for Portland (TX)
partly cloudy and no rain
overcast and no rain
overcast and no rain