Average humidity in Grand Rapids (MI)
The mean monthly relative humidity over the year in Grand Rapids (Michigan), the United States of America.
- On average, December is the most humid month, at 79.0%.
- On average, May is the least humid month, at 65.0%.
- The average annual percentage of humidity is 71%.
Forecast for Grand Rapids (MI)
overcast and no rain
broken clouds and no rain
broken clouds and no rain