SEATTLE — Puget Sound Extended Forecast
Tuesday: Increasing clouds. Morning lows in the upper 30s and lower 40s. Afternoon highs in the mid to upper 60s, with some 70s southward.
Wednesday: Partly sunny with light showers. Morning lows in the mid-40s. Highs in the upper 50s to low 60s. Seasonal.
Thursday: Increasing, widespread and steady rain. Morning lows in the mid-40s. Highs in the low to mid-50s.
Friday: Partly sunny with showers. Morning lows in the mid-40s. Highs in the low to mid-50s.
Saturday: Mostly cloudy with increasing showers. Morning lows in the low to mid-40s. High temperatures in the mid-50s.
Sunday: Mostly cloudy with showers. Sunbreaks. Morning lows in the low to mid-40s. High temperatures in the low to mid-50s.
Monday: Mostly cloudy with showers. Sunbreaks. Morning lows in the low to mid-40s. High temperatures in the low to mid-50s.
Discussion:
Clouds increase Tuesday, but temperatures warm into the mid and upper 60s - Some areas will hit the low to mid 70s
A series of disturbances approach starting Wednesday through the weekend, keeping light showers in the forecast, with steady rain expected Thursday. The most recent model run is showing cooling temperatures during this time frame, with overnight lows in the 40s and daytime highs in the 50s.
Wednesday is just a few light spotty showers, but Thursday looks like widespread rain during the day. Friday is lingering showers, then another widespread push arrives Saturday.
A quick check on rain accumulations so far this year and month: as of Sunday, Sea-Tac has observed .43" in April. The average by this point is 2.48", so there's about a 2" deficit for the month. After Thursday, the end of this week doesn't look to bring major accumulations, but a few tenths are possible.
Overall, the end of April is calling for cooler and wetter conditions with some of that lingering into early May.