Average monthly snow and rainfall in Johnston
The mean monthly precipitation over the year in Johnston (Dyfed), including rain, snow, hail.
- A lot of rain (rainy season) falls in the months: January, October, November and December.
- On average, November is the wettest month with 128 mm of precipitation.
- On average, May is the driest month with 67 mm of precipitation.
- The average amount of annual precipitation is 1097 mm.
Forecast for Johnston
partly cloudy and no rain
partly cloudy and small chance of slight rain
partly cloudy and chance of slight rain