Average humidity in Union City (CA)
The mean monthly relative humidity over the year in Union City (California), the United States of America.
- On average, January is the most humid month, at 80.0%.
- On average, October is the least humid month, at 71.0%.
- The average annual percentage of humidity is 75%.
Forecast for Union City (CA)
partly cloudy and no rain
clear and no rain
almost clear and no rain