Average humidity in Sparta (IL)
The mean monthly relative humidity over the year in Sparta (Illinois), the United States of America.
- On average, December is the most humid month, at 74.0%.
- On average, April is the least humid month, at 63.0%.
- The average annual percentage of humidity is 68%.
Forecast for Sparta (IL)
almost clear and no rain
broken clouds and rain
broken clouds and rain