Now there’s a handy interactive chart that helps illustrate this fact.
Updated Monday 3:20 p.m.
Summer to autumn: "Talk to the hand..."
Some years, autumn begins to get its grip in early September, but by mid-September it's usually quite apparent summer's time is just about done as temperatures are more frequently into the 60s and 70s and rain becomes more of a staple.
But not this year, as we hit the midway point of September and we're still flirting with 90. Monday marks the 22nd day at 85 or warmer in Seattle, tying the all-time record set in 1967. And you know, despite a cooling trend coming this week, I wouldn't put it past this month to eventually break that record -- yes even as we inch closer and closer to October.
In the short term, we're done with the 80s after today -- or at least we should be. A clear night tonight will give way to a weak marine push Tuesday. It doesn't look like it'll be strong enough to bring marine clouds all the way into Puget Sound, but it will at least cool the air mass off a bit for Tuesday to where highs should be in the upper 70s instead of the upper 80s (although I could see us ekeing out an 80 in Seattle.)
A stronger marine push puts 80s out of the question for Wednesday; instead we're looking at a mostly cloudy day under a solid overcast with perhaps some late day clearing spots, but also a risk of light showers late in the day. Highs will drop to the low 70s.
Thursday brings a chance of showers to all as a weak trough slides through the region. We'll struggle to fill any rain buckets, but we'll also struggle to get out of the 60s for temperatures.
A few lingering showers are possible on Friday with highs back into the low 70s, and then here we go again: A ridge of high pressure reestablishes itself for the weekend, bringing sunshine both days and warmer temperatures. Right now highs look to be in the mid-upper 70s, but some models have indicated warmer weather at times so be prepared for those numbers to climb a bit as the week progresses. No big sign of a big thermal trough like we have now, but still much warmer than you'd think as autumn begins on Monday night.
Long range models have been hinting at more warm spells out there in the 1-2 week timeframe. Sorry Autumn...maybe in October?
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