SEATTLE — The last weekend of summer is behind us, and fall officially starts Tuesday at 5:05 pm.
The weather this week will be as expected for the first week of fall.
High temperatures will likely stay in the 60s for the foreseeable future as weather systems move through the area over the next couple of days.
Monday night and Tuesday will be mostly cloudy at times, with low temperatures Monday evening dropping down into the low 50s and a high temperature Tuesday in the upper 60s.
This first weather disturbance shouldn’t bring much rain, although a Puget Sound Convergence Zone could develop later this evening and pop up a couple of showers or some drizzle by Tuesday morning.
Another weak system moves in on Wednesday with some cloud cover and a repeat of cool 60s for daytime highs.
By the end of the week, the computer models are forecasting a more noticeable weather system that has a better chance of bringing some rain to the area. The timing of the rain showers should be late Thursday and into Friday. Some computer models are predicting over a quarter of an inch in the lowlands and over half an inch in some of the mountains.
The highest elevations in the Olympics and northern Cascades could even see snow by the end of the day on Friday. Again, that would be for elevations well above 6000 feet.
The end-of-week weather will bring our temperatures down to readings well below average, in the low 60s for daytime highs. The average high temperature for Thursday is 69 degrees, and I’m forecasting 61 degrees.
The long-range outlook for the weekend calls for variable clouds with highs in the 60s both Saturday and Sunday. It should be mainly dry, but still cool, this weekend based on the forecast models from Monday.
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