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Weather Eye: Rise and fall of humidity, temps mark slow seasonal transition

Today, we will see moisture as a low-pressure system south of us brings some clouds, humid and warm conditions, and a risk of thunderstorms and rain showers. It will feel like the middle of August rather than early September.

September gets into the act by the weekend with more clouds and less humidity, and we have a chance of rain showers Saturday through Wednesday. Yes, I mentioned here earlier that we transition from one season to another slowly. I see high pressure and warmer temperatures about midweek next week.

I’m glad the upper 80s and near 90-degree highs didn’t materialize Tuesday or Wednesday, but with a strong southerly flow of air today, temperatures will rise into the upper 80s. The coming cloudiness and moisture could push some locales up to 90, but I have my doubts.

At 5 p.m. Wednesday, highs were pleasant across Western Washington, with 70 degrees along the coast and 80 degrees up and down the Interstate 5 corridor.

Our average high is 79 degrees, but as the days go on, that drops at a good clip after midmonth. The average low is 54 degrees. One reason our mean temperature is as warm as it is, like the past several months, is because our overnight lows have been in the 60s most of the time. Wednesday’s early morning low was 63 degrees. Just think, next month we will probably see many days with highs in the low 60s with rainfall.

It won’t be long before some folks in the colder outlying areas get their first frost, usually by the end of this month.


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