Plateau Weather

Plateau Weather Weather info for the Sammamish and Issaquah Plateau

07/28/2025

It's the last week of July, and this weekend is Seafair Weekend...summer is sure screaming by! A nice start to the week, but clouds and a chance of rain re-appear by the end of the week...though it doesn't look like it'll affect weekend plans much.

Almost a perfect Seattle summer to start the week! Today (Monday), we'll pop into the low-80s, with mid-80s expected Tuesday and Wednesday. Humidity stays on the lower side, so shouldn't be muggy. We won't have to deal with morning clouds either - mostly sunny thru Wednesday evening!

Thursday is a bit of a transition day, but the forecasts are still waffling a bit. We do know it'll be cooler - temps dropping into the mid-70s. It'll also be cloudier...clouds fill in Wednesday evening. What's still up in the air (ha!) is if we'll get any precip...for now, it's safe to plan on scattered showers on Thursday and potentially Friday. There's a slight chance of some thunderstorms too, but we'll take a look in another day or two! At this point, the weekend looks dry, though some clouds might stick around...temps around the 80º mark.

07/22/2025

The yo-yo continues…after a few days back into the 70s this past weekend, we’re back into the 80s this week!

Cloudy skies stick around into tomorrow (Tuesday). There’s a slight chance of a shower overnight / early morning, but should be a dry day the rest of the day. Clouds will burn off for a mostly sunny afternoon and evening!

Temps get into the mid-80s for mid-week, before dropping back into the 70s for the late week and weekend. There might be some smoke aloft, but shouldn’t affect air quality at the surface much.

07/15/2025

⚠️🥵A Heat Advisory is in effect until 10pm Wednesday night 🥵⚠️

The National Weather Service has issued a Heat Advisory, highlighting the high temps today (Tuesday) and tomorrow (Wednesday). We’ll reach the low-90s today, with mid-90s expected tomorrow. We’ll drop to around 60° tonight, which should bring some relief.

Make sure to stay cool and hydrated - also, please do not take dogs for walks in the afternoon sun! Pavement temps will be well above 100°…if you can’t hold the palm of your hand on the ground for 5-10 seconds without burning, it’s too hot for paws!

Good news is, the smoke isn’t as bad as originally thought! It’s mainly staying higher in the atmosphere, and not affecting air quality here at the surface. Might get a decent sunset out of it tonight though!

07/14/2025

Temps will be playing a bit of yo-yo the next several days! (I looked up the terms to try to take the analogy as far as possible, but decided against it. You’re welcome…I think?!)

We were in the mid-80s the past couple days, and jumped to the upper-80s today (Sunday)! Tomorrow (Monday), we’ll drop down into the upper-70s, as a system scrapes by to our north and east…we’re not close enough to it to eke out any precip though - just the cooler temps and more cloud-cover.

Tuesday, the warmup begins! Temps jump back into the mid- to upper-80s. We’ll climb even further on Wednesday, into the low- to mid-90s. That should be the peak of this brief heat wave, as we drop back to the upper-80s on Thursday and Friday.

A big reason for the warmup is a shift in wind direction - instead of our “natural air conditioning”, where the winds come from our west off of the Pacific Ocean, they’ll switch to be coming from the northeast…as it comes down from the Cascades, it warms up.

However, this shift in wind direction might also bring some smoke to the area - there’s a new wildfire just north of the BC/Washington border, northeast of Ross Lake. Current estimates have it arriving in the area early Tuesday morning…I’ll keep an eye on it, and post updates throughout the week!

07/11/2025

I've got one of those “good news, bad news” forecasts today - the good news is, this weekend should be pretty much perfect! The bad news is, next week should be pretty hot. (But the good news is, that’s still several days away!)

Today (Friday), Saturday, and Sunday will be sunny and “seasonably warm” - afternoon highs in the mid 80s. Gentle breezes, and shouldn’t be very muggy…not a bad weekend in my book! No indications of wildfire smoke impacting us the next few days either - though fire danger remains elevated.

Looking ahead to next week - after a brief cooldown Monday, temps look to rapidly climb to above-normal by mid-week. A few days in the 90s is not out of the question…but we’ll take a closer look in a few days. For now, enjoy the weekend!

07/09/2025

Tuesday evening update - after a toasty day today, I definitely noticed the mugginess this afternoon and evening! That’s the warning sign of the next system rolling in…

Tomorrow (Wednesday) will be much cooler than today - afternoon high only around 70°. Most of the precip looks to stay to our north, and along the coast - Seattle looks to be in the rain shadow of the Olympics, while the Plateau is on the edge. Even still, showers will be very scattered, and total amounts will be fairly light. Best chances look to be in the afternoon and evening, though the window is open from tomorrow morning to Thursday morning.

Good news for sun fans - it doesn’t last long! Thursday bounces back to the mid 70s, and we’ll be back to mostly clear skies by the evening!

07/07/2025

Hope you had a fun (and safe) holiday weekend! As we get back into the work-week, things get a little interesting…fairly warm temps to start the week, then a chance of showers mid-week.

Monday and Tuesday look quite nice - temps climb into the mid- to upper-80s, and mostly sunny both days! Take precautions if you’re sensitive to heat the next couple days.

Tuesday evening, things begin to change…some cloud cover will build in, as a system moves by to our north. Wednesday looks to be a fairly overcast day, and on the cooler side, with temps right around 70°. There’s a chance for some light precip Wednesday into early Thursday morning - but not much more than a tenth or two total. Since we’re on the edge of the system, we’ll have to wait and see as it get closer…I’ll plan to post a mid-week update with more details!

Thursday, temps should bounce back into the upper-70s, as the clouds begin to clear out. Friday looks pretty nice too!

On a different note - It’s the time of year to start paying attention to wildfires and smoke. (If you thought snow in the winter was hard to predict, forecasting smoke is a completely different beast.) Thankfully, doesn't look like there’s any smoke that’ll impact us over the next couple days - but that could change very rapidly. The closest major fire is in north Chelan County, northwest of Entiat, and the next biggest are in Northern California…I’ll keep an eye on them, and keep you posted if anything changes!

07/04/2025

It’s officially the start of the long weekend - Happy Fourth of July!

The forecast for the Fourth looks fairly nice, all things considered…though I can’t quite call it a “perfect” summer day. On the good side - afternoon high temps will be in the mid- to upper-70s, and we won’t get any precip! On the not-so-good-side - we’ll have partly cloudy skies most of the day, and it might feel just a touch on the muggy side.

If you’re out late watching fireworks, temps will drop into the mid 60s by around 10pm - might want to bring some blankets or sweatshirts with you. Partly cloudy skies, but the clouds should stay high enough to not affect any shows. Some gentle breezes should blow any haze away pretty quickly too.

The rest of the weekend looks pretty nice too - temps will warm up into next week, with highs in the upper 70s on Saturday, and near 80° on Sunday…no rain in sight! Should turn mostly sunny by Sunday too.

Have a safe Fourth everyone!

07/02/2025

It’s July 1, and we’ve already started summer!! I mentioned to a coworker from out-of-state that our nice summer weather usually starts on July 5th…not this year!

This stretch of nice weather continues into and after the holiday weekend. Tomorrow (Wednesday) marks the return of morning clouds and afternoon sunshine - this will bring temps back into the upper 70s! Slightly cooler still on Thursday, with a slight chance of some drizzle in the morning, and temps only into the low 70s. Should bounce back into the mid-70s for the Fourth on Friday, mainly depending on how stubborn the morning clouds are.

A quick look back at June - the official weather reporting station at SeaTac airport only measured 0.42” of rain, about an inch below normal. The first half of the month was completely dry, while the majority fell on the 20th/21st. We did end up just above the average high temp over the month. While it was a very pleasant June, we’ll have to wait and see how it’ll affect the rest of the summer and fall. It definitely didn’t help our drought, and will increase wildfire risk.

I’ll be back Thursday with a closer look at the holiday weekend forecast!

06/20/2025

Summer officially starts Friday evening at 7:42pm - wouldn’t be a proper start to a Seattle summer without some rain!

Showers throughout the day Friday, but they don’t look too impressive - fairly scattered, pretty light amounts. It will be on the cooler side though, afternoon highs only in the low 60s.

The main part of the precipitation falls overnight Friday into Saturday morning - pretty steady rain, with somewhere between a quarter to a half inch by midday. (Think I’ll turn my lawn sprinklers off this weekend!) Scattered showers the rest of the afternoon Saturday, tapering off into the evening and overnight. We might barely touch 60° by the afternoon too!

Sunday is a transition day back to nicer weather! We’ll be dry and partly- to mostly-sunny. Temps will bounce back to right around 70°. Next week looks to start off sunny and in the 70s as well - back to perfect summer weather!

06/18/2025

Rain is in the forecast…I’ll cave and admit we are going to experience some “June gloom” - but I still hold firm it won’t be “Juneuary.”

Two systems are coming our way this week - the first is at our doorstep, arriving overnight tonight (Tuesday) through the day tomorrow (Wednesday). Light, very scattered showers are possible during the morning - less than a tenth of an inch total though. The biggest impacts will be the cloudy skies and cooler temps, only getting into the mid- to upper-60s in the afternoon. Thursday should be a drier day between systems, but still on the cooler side, in the mid-60s.

The next system arrives Friday into the weekend - scattered showers on its arrival during the day Friday, but a wetter day Saturday…somewhere between a quarter and a half inch. Sunday doesn’t look as wet at this point, but showers are still in the picture. We’ll take another look later this week!

06/13/2025

Ahh, the time of year when it’s “morning clouds and afternoon sun” on repeat - in my mind, this is only borderline “June gloom”, but definitely not “Juneuary”…we’ve just been slightly below normal temps the past couple days, and we haven’t had any precipitation so far all month!

More of the same for the weekend - clouds build in overnight…a little mist or drizzle isn’t out of the question, but it’s be pretty light and spotty at best. Clouds should burn off by the afternoon, leaving the late afternoons and evenings partly- to mostly-sunny. Temps should bounce up over the past few days too - Saturday gets into the upper-60s to right around 70°, and Sunday jumps into the low- to mid-70s!

Next week starts off on a similar foot…but a chance of precip returns mid-week. Thats Subject to change thus far out though, so we’ll keep an eye on it!

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