Current weather forecast for Western Washington
Mountain snow returns above about 3,000 feet Sunday night. Continued rain on Monday with the possibility of thunderstorms.
SEATTLE — Extended Puget Sound forecast
Monday: rain showers. Minor thunderstorms are possible. Sun breaks. Lowest temperatures in the morning are around 40 degrees. Temperatures in the low areas rise to the mid-fifties. Mountain snow in the morning.
Tuesday: A few lingering showers. The sun often shines on the lowlands. Lowest temperatures in the morning are around 40 degrees. Temperatures in the low areas rise to the mid-fifties.
Wednesday: Dry, sunny and warm. Lowest temperatures in the morning are around 40 degrees. Highs in the upper 50s to lower 60s.
Thursday: Some rain showers. Morning lows in the mid 40s. Highs are in the mid to upper 50s.
Friday: partly cloudy. Heating. Morning lows in the mid 40s. Highs in the mid-60s.
Saturday/Sunday: rain showers. Morning lows are in the mid to upper 40s. Temperatures are in the mid to mid 60s.
While April is ending on a wet note, it doesn't look like it will rescue the incredibly dry month. April rain totals in Sea-Tac are supposed to exceed three inches but we'll be lucky if we can squeeze in enough to get an inch of rain for the month. April rainfall totals have been less than an inch only seven times in recorded history.
Cold air will bring snow levels down to about 2,000 feet by Monday morning, but accumulations will be difficult below about 3,000 feet due to warmer surface temperatures. This means that Snoqualmie Pass will likely not see more than an inch or two. However, as of late Monday morning, there will likely be 4-6 inches of beneficial snow above 3,500 feet in the Cascades, with up to 8 inches for the highest elevations.
Monday will see more sunshine than Sunday, but instability brings a risk of thunderstorms. Minor thunderstorms are possible across much of Western Washington, including the mountains. Storms may produce thunder/lightning, gusty winds, and small hail, as well as short periods of moderate to heavy rain.
Another disturbance develops from the northwest early Tuesday morning, bringing pockets of heavy rain into the early morning hours, mostly in the south.
Wednesday now heads toward dry and briefly warm, with sunshine returning and temperatures dropping into the 60s for just one day. On Thursday, light rain returns.
The weekend is not clear at the moment. Some models are leaning toward cool, wet weather in the mid-50s, while others hint at a possible 70s. At this point, with this much disagreement, we will meet in the middle and head toward temperatures in the low 60s with scattered showers next weekend.
