The rain in Seattle is usually a light or fine misty rain. The normal average annual precipitation total for Seattle is 37.19 inches. Summers in Seattle are usually warm, dry, and sunny, with long days and cool nights. The driest time of year in Seattle is the last half of July and the first half of August. During this time period, Seattle will often go ten, twenty, or thirty days without any measurable precipitation.
Winter is the wettest season in Seattle.
Spring in Seattle is mild and green, but it can be very wet at times.