Seattle is starting Saturday in the mid-50s, but the calm morning will give way to thicker clouds and a mild afternoon near 70. Rain could arrive after 5 p.m., setting up a much wetter Saturday night and Sunday across the city.
Rain Arrives Saturday Evening
Saturday should stay mostly cloudy through the afternoon, with generally benign, variable winds of 5 knots or less, becoming southwest at 6 to 10 knots around 00z. The chance of rain rises to about 30% after 5 p.m., while western Washington could also see a few thunderstorms, mainly away from Seattle and closer to the Olympic Peninsula and southwest interior, according to the National Weather Service.
Saturday night is expected to remain wet, with precipitation persisting overnight and into Sunday. Temperatures will be in the mid-50s, with winds generally benign.
Sunday Stays Wet Before Drying Out
Preparing for Heavy Rain
Seattle Public Utilities explains that some parts of Seattle’s combined sewer system carry both rainwater and wastewater and can overflow into local waters during heavy rains, producing combined sewer overflows. The utility says it has significantly reduced those overflows in both frequency and volume, according to Seattle Public Utilities. For wet-weather preparation, KIRO 7 News Seattle reports that Seattle Public Utilities urges residents to clear nearby storm drains of leaves and debris before rain, but only when it is safe to do so, according to KIRO 7 News Seattle.
Rain is expected to continue Sunday morning and could linger until around 2 p.m. The high should reach about 67 degrees, with generally benign winds and rain and showers continuing.
The latest forecast keeps rain in the weekend forecast before conditions begin drying out Sunday evening.
Warmer, Drier Weather Returns Next Week
Sunday night should trend drier, although local weekend gusts could reach 20 to 25 mph. Monday looks dry with highs in the upper 60s to around 70, followed by mostly sunny skies Tuesday near 70.
The week then stays warm and dry, with lowland highs in the mid-to-upper 70s. No land-based watches or warnings are listed for Seattle, though a small craft advisory is in effect Saturday evening into early Sunday for portions of the Strait of Juan de Fuca.
