Average humidity in Johnstone
The mean monthly relative humidity over the year in Johnstone (Strathclyde), the United Kingdom.
- On average, January is the most humid month, at 87.0%.
- On average, May is the least humid month, at 68.0%.
- The average annual percentage of humidity is 79%.
Forecast for Johnstone
broken clouds and no rain
overcast and small chance of sleet
broken clouds and no rain