Kettle Falls, Washington, gets 17 inches of rain per year. The US average is 37. Snowfall is 41 inches. The average US city gets 25 inches of snow per year. The number of days with any measurable precipitation is 101.
On average, there are 174 sunny days per year in Kettle Falls, Washington. The July high is around 88 degrees. The January low is 18. Our comfort index, which is based on humidity during the hot months, is a 78 out of 100, where higher is more comfortable. The US average on the comfort index is 44.