Average monthly snow and rainfall in Castle Rock (WA)
The mean monthly precipitation over the year in Castle Rock (Washington State), including rain, snow, hail.
- A lot of rain (rainy season) falls in the months: January, February, March, October, November and December.
- Castle Rock has dry periods in July and August.
- On average, January is the wettest month with 207 mm of precipitation.
- On average, July is the driest month with 12 mm of precipitation.
- The average amount of annual precipitation is 1336 mm.
Weather Forecasts for Castle Rock (WA)
overcast and heavy rain
overcast and rain
broken clouds and rain