Close the supply water valve to the water heater. located, in most cases, above the water heater on. the cold water inlet to the hot water heater. 2. Drain the water from the hot water pipe by opening. a hot water faucet in the house. Let the water run. until it stops flowing.
The annual average precipitation at Seattle is 38.25 Inches. Winter months tend to be wetter than summer months. The wettest month of the year is December with an average rainfall of 6.06 Inches. We usually only get 1-3 days of snowfall a year.
In that case, the 30-year average for the city's snowfall is 109 inches, or 9 feet, due partly to heavy snow years in the 1970s and 1980s. Tallying all the winters since 1899, the area averages 7 feet of snow per winter -- about 84 inches. Flagstaff last beat both averages in the winter of 2004-2005. Flagstaff averages 198 days annually of what the National Weather Service considers the snowfall season.