Plateau Weather

Plateau Weather Weather info for the Sammamish and Issaquah Plateau

09/12/2026

In the spring, it’s pretty typical for work-weeks to be nice, and weekends to be wet and chilly…this weekend is shaping up to be like that!

Unsettled weather is lurking off the coast, and will make its way inland later today (Saturday). Outdoor activities should be pretty dry throughout the day - while pop-up showers are possible thru mid-afternoon, the main event should start by late-afternoon or evening. Looks pretty steady overnight and thru the day tomorrow (Sunday) - as much as an inch or so by tomorrow evening! Definitely turning my sprinklers off for at least a few days! Afternoon temps only in the upper-60s to near 70°.

The other part of “unsettled” is the potential for thunderstorms across the entire region. Chances are low, but not zero - honestly, I’m thinking there’s a better chance of isolated heavy showers in the midst of the steadier rain.

We’ll start to dry out by Monday, but it’ll take a couple days for the temps to rebound…. We’ll start the week in the mid-60s, getting to the mid- to upper-70s. Looking at the long-term outlooks, summer isn’t giving up quite yet!

09/05/2026

Saturday 4pm update: not as much activity this afternoon as there was yesterday at this time…while there’s still a chance of a stray shower popping up over the next couple of hours, doesn’t look very likely. Enjoy the fun clouds though!

09/05/2026

Happy Labor Day Weekend! This is definitely the marker that summer is ending...while we can still get some summer-like weather even into October, we're definitely trending towards more frequent fall weather.

We'll get a little bit of both this weekend...in fact, we kinda had both today (Friday)! This morning and afternoon was beautiful, in the low-70s. Then the showers and thunderstorms rolled in, dropping the temp into the upper-50s over a couple hours! We only got about a tenth of an inch around the Plateau...on the other hand, that cell that scooted just to our north dropped significantly more - 1 to 1.5 inches between Redmond Ridge and Cottage Lake!

Tomorrow (Saturday) looks like it could be a similar setup. Partly sunny in the morning and early afternoon, warming to the low-70s. By the mid- to late-afternoon, more storms could pop off like today - it's hard to predict exactly when or where they'll go, but the general window of "best chances" would be somewhere between 2-8pm. We'll have to see how they develop in real time tomorrow - what is sometimes called "nowcasting", rather than "forecasting"!

The back-half of the long weekend looks much nicer! Any showers on Sunday afternoon should stay closer to the Cascade crest, instead of rolling down into the foothills - leaving us dry. Otherwise, afternoon temps still in the low-70s, with partly-sunny skies.

Back tomorrow with more updates!

Friday 5:45pm update: the cell continues to move northwest, towards the King/Snohomish Co line. The NWS issued a new Spe...
09/05/2026

Friday 5:45pm update: the cell continues to move northwest, towards the King/Snohomish Co line. The NWS issued a new Special Weather Statement that’s expiring now (sorry for the delay!) - even if they don’t issue a third, expect small hail and gusty winds as it moves towards Woodinville and Maltby.

Meanwhile, closer to the Plateau, the showers are lightening up for the time being…though my weather station is still picking up lightning strikes around the area.

⚠️⚡️ A Special Weather Statement until 5:30 for just north of the Plateau - the National Weather Service is highlighting...
09/05/2026

⚠️⚡️ A Special Weather Statement until 5:30 for just north of the Plateau - the National Weather Service is highlighting the risk of 0.5” hail, and 30mph wind gusts.

It’s moving northwest, so while this cell won’t affect the Plateau, we’re in for an exciting few hours!

09/04/2026

⚡️Friday afternoon heads up - Lightning and rain incoming!! ⛈️

If you’ve spent any time in the Midwest or South, you’ll know that looks can be deceiving…beautiful mornings like this one can turn wet and loud quite quickly! The morning sun and warmth created instability, causing thunderstorms to fire up this afternoon. Looks like they’ll hold together as they make their way towards the Plateau and the Eastside. Might make for a wet afternoon commute… If thunder roars, go indoors! More updates to come - including a look at the weekend later tonight!

09/01/2026

If this past weekend was an appetizer for fall weather, the first course is coming later this week - just in time for the start of September!

Today was a fairly nice day! Got to the upper-70s or low-80s around the area...though I did notice a bit of haze in the air - looks like a bit of smoke from the fires just easy of Snoqualmie Pass made its way towards us this afternoon. One more decent late-summer day tomorrow (Tuesday) - we'll go with partly-cloudy, highs in the low-70s.

Wednesday will be pretty wet, a tad windy, and relatively chilly:
- We might see a few showers late Tuesday night, but the main part of the system moves into the area late-morning Wednesday...and it stays pretty damp throughout the day. Looking like somewhere near or around a half-inch by Wednesday night.
- Winds will be a little breezy, especially mid-day Wednesday as the main part of the system moves through - could be as high as around 20 mph, which is not a traditional "windstorm" by any means...but since this is the first batch of stronger gusts in a while, and the trees are still fully-leaved, we could see more broken branches than normal.
- The afternoon high temp will only be in the upper-50s, or low-60s if we're lucky...that's not even "shorts weather" in my book.

We'll remain in an "unsettled weather pattern" Thursday through the weekend - at this point, it looks to stay on the cooler side (though should climb back into at least the upper-60s!), and chances of showers. But while we're definitely heading towards fall, I wouldn't be surprised if summer has a couple more cards left to play over the next few weeks - stay tuned!

08/29/2026

Saturday midday update: ...well, it certainly rained this morning! Close to a half-inch of rain across the Plateau, but other places around the Eastside got 3/4" to an inch! A few more showers are possible the rest of the afternoon, but we should be past the worst of it. Still on track for mid-60s this afternoon, especially if the clouds lighten up and we get a few more sunbreaks. Tomorrow should still be drier, and perhaps a tad warmer!

08/29/2026

Everyone has their “summer is quickly coming to a close” moment. For some, it’s the arrival of Pumpkin Spice Lattes, the leaves starting to turn, or the first week of school…for me, it’s the Little League World Series championship weekend, and the first “fall-like” weather pattern - this weekend, I apparently get both 🫣

It’s definitely going to feel more like fall than summer - afternoon highs tomorrow (Saturday) only in the upper-60s…hopefully a bit of a rebound Sunday, maybe inching towards the low-70s - but certainly cooler than we’ve had recently!

There’s also a good chance of some rain - they’ll be the showery kind though, not a steady rain over several hours. Pop-up showers are possible overnight tonight (Friday) into tomorrow (Saturday)…but as the day goes on, more organized showers as part of a convergence zone could roam around the area. Could even be a lightning strike or two as part of it. As for amounts: If we don’t get many showers, I’d expect as little as a light wetting of the pavement…if we get more steady or heavier showers, it could be a few tenths of an inch by Saturday evening. Best guess, somewhere in the middle. Sunday looks drier though, and we should at least start the week off on a drier note!

I’ll post another update in the morning once we see what happens overnight.

08/25/2026

Welcome to the last full week of August! And enjoy those late(ish) evening sunsets while you can...starting Wednesday, they're back before 8pm again.

It got smoky again this afternoon. There are a few fires due east of Snoqualmie Pass, and north of Kachess Lake and Cle Elum Lake - the Three Queens Fire, King Fire, and Goat Fire - that are all producing a good amount of smoke. (Links to the Watch Duty pages in the comment below, if you're interested.) The winds have shifted offshore (blowing east to west), which is bringing some of that smoke towards the Puget Sound. Air Quality briefly jumped into the "Unhealthy for Sensitive Groups" category late this afternoon, but is back down in "Acceptable" - though I wouldn't be surprised if we're back in "Unhealthy for Sensitive Groups" at times tomorrow (Tuesday) too.

Otherwise, another warm day on tap for tomorrow (Tuesday) - as high as the mid- to upper-80s, depending on how much smoke there is in the atmosphere. By Wednesday, winds should shift back onshore (generally west to east), which will bring cooler afternoon highs for the rest of the week, only in the mid- to upper-70s - and will hopefully clear some of the smoke out. Some chances at light precipitation towards the end of the week and into the weekend, but we'll wait a day or two to see how it's looking as we get closer. Believe it or not, we are less than a month away from the beginning of fall!

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