Seattle woke up to crystal-clear skies on Wednesday and a bracing chill, with temperatures hovering around 40°F early in the morning before climbing into the upper 50s to near 60°F by afternoon. A Frost Advisory remains in place for parts of the southern interior through 9 a.m., so low-lying yards and quieter roads may start the day with a thin glaze of frost and some slick spots.
Sunny Skies, Steady Warm-Up Through Friday
Sunshine is set to rule the forecast through Friday, with highs near 60°F on Wednesday and creeping into the low 60s on Thursday. Inland neighborhoods have the best shot at real warmth, with upper 60s to near 70°F possible by Friday as a weak ridge builds over the region, according to the National Weather Service Seattle. North winds will stay light, generally under 10 mph, keeping things dry, calm, and pretty ideal for outdoor plans.
Morning Frost Advisory
The Frost Advisory targets the southern interior and southern Puget Sound, including parts of Thurston and Lewis counties and the middle Chehalis River valley, and is scheduled to expire at 9 a.m. Gardeners will want to shield tender plants, and drivers should give themselves a little extra time on quiet, shaded roads early on. Overnight lows in the most sheltered spots dipped into the upper 30s, just cold enough to leave a light frost on lawns and exposed surfaces.
Weekend Rain Returns
The dry streak starts to crumble late Friday as a low creeps in from the Gulf of Alaska. A chance of rain develops Friday night after about 11 p.m., with rain likely on Saturday and highs sliding back into the mid-50s. The National Weather Service Seattle notes there is still some uncertainty in the exact storm track, but most forecast solutions bring at least light rain through the weekend. Mariners can count on relatively benign conditions through Friday, with seas below 10 feet, although winds may pick up Sunday into early next week.
What To Pack
Plan for those cool starts and mild afternoons: a light jacket in the morning, layers for the sunny midday hours, and covers for any sensitive outdoor plants until after the 9 a.m. thaw. For weekend outings, toss a compact umbrella in your bag and be ready for cooler, damp weather on both Saturday and Sunday.
