Seattle started Tuesday, October 6, under fog and mist with temperatures around 55 degrees. Visibility was near 3 miles in a local observation, while winds were calm. The fog should fade during the morning, setting up a much brighter afternoon.
Fog Burns Off Before A Sunny Afternoon
By 11 a.m. Tuesday, Boeing Field was clear, with a temperature of 61 degrees, visibility of 10 miles and northwest winds at 4 mph. The National Weather Service’s Seattle forecast calls for mostly sunny skies for the rest of the day, a high near 65 degrees and north-northwest winds of 5 to 7 mph. It is a quieter follow-up to Monday’s fog-focused outlook, which brought more widespread visibility concerns.
Wednesday should begin with another round of fog before 11 a.m., but the afternoon is forecast to turn mostly sunny with a high near 67. Thursday looks like the warmest day of the stretch, with mostly sunny skies and a high near 69. Overnight lows will remain mild in the low 50s.
Tuesday’s clearing fits a broader pattern of high pressure offshore and lower pressure inland, which is keeping onshore flow in place. The National Weather Service’s Seattle forecast discussion said most fog and low clouds had cleared by Tuesday afternoon, but another round could form Wednesday morning. The lowest clouds and visibility are more likely in the north and south interior and the Olympics.
Rain Chances Return Friday
The dry stretch is now expected to continue Thursday night, with partly cloudy skies and a low near 53. Rain is forecast Friday and may continue Friday night and into Saturday. Saturday’s high is forecast near 65 degrees, according to the National Weather Service forecast.
The Friday-Saturday rain chance is tied to a larger front expected to cross the region. The Seattle forecast discussion puts projected rainfall through late Saturday around one-tenth to one-quarter inch and calls for cooler air over the weekend. In outlying areas, overnight temperatures could dip into the 30s; showers could bring light snow above roughly 4,500 feet. Those are regional possibilities, not the Seattle city forecast.
Sunny But Cooler Weekend
Sunday is forecast to be partly sunny with a high near 70. The latest Seattle-area forecast discussion lists no Washington watches, warnings or advisories; the broader regional alert listing includes Small Craft Advisories for coastal waters. Drivers should still use extra care wherever morning fog lingers.
