Mercer Island (WA) Precipitation: Average Monthly Rainfall and Snowfall
This graph shows the average amount of rainfall per month in Mercer Island (Washington State). The numbers are calculated over a 30-year period to provide a reliable average.
- A lot of rain (rainy season) falls in the months: January, March, October, November and December.
- On average, November is the wettest month with 168 mm of precipitation.
- On average, July is the driest month with 15 mm of precipitation.
- The average amount of annual precipitation is 1045 mm.
Current rainfall in Mercer Island (WA)
broken clouds and small chance of slight rain
overcast and no rain
broken clouds and no rain