Greetings, Patron.  Simple forecast today.  Iced Coffee may be needed soon.  Read on.

We see an extended DRY pattern on the charts, so don’t expect any precipitation from today on through Sat Jun 14th.  

For this week, temps will remain mild, mostly in the 70s, with a rather brisk afternoon NW wind (like the past couple of days).  However, that will begin to change this coming weekend.   The strong onshore flow will weaken, opening the door for the warmest temperatures of the year, to date.  Upper 80s to lower 90s begin Sunday Jun 8 over western OR, as a classic summer ‘heat low’ builds north from CA.  

The heat will build north into NW WA & BC during the week of Jun 9 - 13.  Temperatures will top triple digits in southern OR / east side; 90s highly probable up in the Puget Sound region and maybe even southern BC.  The Willamette Valley could reach the triple digit mark Mon or Tue, Jun 9,10.

As a reminder, we use the traditional definition of a HEAT WAVE as 3 consecutive days with temps above 90 F in the shade.  That said, we cannot say for sure just yet if the forecast heat-up will last 3 consecutive days in the NW corner of WA, but for western OR, it looks quite probable.

—> We will be in Minnesota this week, so no forecast on Fri Jun 6.  

Ah, Summer is nearly upon us, with schools ‘letting out’; graduates receiving diplomas and vacations begin.  What about wx around the great PNW as June - the gateway to Summer - gets underway this weekend?  Mug time.

Pleasant weekend on tap, although a weak cold front will drape some clouds over the NW corner of the region, and the usual chance for a shower, mainly north of Chehalis.  Mild temps after today’s (Friday) short-term ‘heat up’ into the 80s in most locations.  Sunday should be dry, with some clouds here & there.  Westerly winds will pick-up notably in the Columbia Gorge, and generally across much of southern OR, east & west.

Next week looks dry but a tad on the cool side given a rather strong onshore flow.  Fine weather, actually.

The weekend of Jun 7,8 trends as dry, with temps warming up several degrees as the onshore flow weakens a bit.  

Model runs have hinted at a short period of warm wx beginning to develop by Mon Jun 9, as temps could pop into the upper 80s, even teasing 90+ in the usual hot spots.  It may only last until mid-week, with much cooler air moving in from the NW by Wed or Thu, Jun 11,12.  We’ll see.  Either way, limited precip from that cold front; we don’t see any notable rain/showers throughout the first 15-18 days of June 2025.

The extended dry cycle for June, should models verify, will be favorable for ag operations, although water managers will be kept busy moving lines.  Plant disease pressure should be low, as several crops reach or approach harvest.  

A peek at tropical action presents the chance for the season’s first named Atlantic/Caribbean storm, ANDREA, to form around June 7 south of Cuba.  Pacific hurricane action has already started, with tropical storm ALVIN spinning well south of Cabo.

A cool Memorial day, given the clouds and showers (which are mainly over NW WA).  However, by late afternoon this holiday, temps will begin to rise, with a clearing sky.  Tue & Wed this week will be exceptionally pleasant with temps rebounding into the 70s to low 80s.  (There is an outside chance for portions of the Willamette Valley temps to tease 90F on Wed.)  A fast, weak system is on tap for Thu, so expect a one day break from the ‘almost hot’ wx; showers possible, again mainly to the north.  The short week ends with another excellent warm day on the 30th.  

May 31 / Jun 1:  Fair weather on tap, although another ’short-shot’ of clouds and rain may clip Vancouver Is area Saturday night.  Generally, temps will cool down again, given a seasonally cool air mass that will move onshore and LAST through the first week of June.

June 2 - 6 is trending dry & rather cool through Wed the 4th.  Showers broadly spread over the entire PNW are possible on Thu Jun 5, before another dry period begins, which should hold on through the weekend of Jun 7,8.  Temperatures are charting as WARM, with 90s possible for SE OR; 80s elsewhere, although an onshore flow could hold back temps in the 70s west of the Cascades.  Long way out, so we’ll refine the outlook as that weekend nears.

Were we to pick the two warmest days out of the next ten, we’d go with this Wed and this coming Sat May 31.  Overall, favorably fair wx as we transition into early Summer.

🇺🇸☕️ We tip our Mugs in honor of our Nation’s fallen.

Warmer temps on the way, with a ‘sprinkle' day or two over the next 2 weeks.  Let’s take a Mug peek, shall we?

Memorial Day Weekend:  not too bad in the weather dept.   Today’s morning clouds will yield to sunshine late day, setting up a couple of wonderful dry, warm days in the PNW.  Saturday should top in the 70s; Sunday too, but with high clouds ahead of a Memorial Day shower or two, mainly over western WA. Temps continue mild all through the holiday.

Next week will present sunny days starting Tue, with a very warm WEDNESDAY, May 28 - temps should climb into the 80s in many locations; upper 70s to low 80s around the Puget Sound, as well.  Cooler Thu with more clouds and possibly steady RAIN for a one day.  Clearing by Fri on into the weekend.  Note: most of the precip will be over western WA & southern BC, per current model solutions.

Weekend of May 31 & June 1st is trends as dry and warm.  There are variations in the model runs, however, most of the charts keep the weekend as dry and pleasant, same too for the following week of Jun 2-6, with only Fri the 6th looking to bring back a short-shot of rain north of Portland.

Weekend of Jun 7,8 also charts as dry and warm. 

In Summary: expect a chance for showers on May 26, 29, Jun 5 — all primarily north of Portland.  The rest of the extended period looks dry with mild-to-warm temps.

A dry break is coming, as is a Mug refill while scripting this latest extended outlook. 

Wet & cool today to get the week started; rather heavy showers around the Puget Sound; maybe with some thunder.  Tuesday will be on the cool side, with fewer showers.  Wed looks to be the ‘turning’ day - presenting plenty of sunshine & warmer temps.  Some charts tease a shower or two on Thu, but most runs keep it mild & dry; same for Fri May 23.  

Memorial Day Weekend: while a few model solutions are back to adding moisture during the holiday on Sunday; others keep it dry and warm, as we mentioned last time.  At the risk of being wrong, we will go with a dry weather forecast for the holiday, although it’s not likely to warm into the 80s except for portions of southern OR, esp east side.

The short, post-holiday work week of May 27-30 is looking to start wet on Tue, then dry out and begin to warm up a bit.  --> The notable heat-up we mentioned last time is now off the charts; however, that could return as we often experience the on/off model switch-a-roo many times in the past.

The weekend of May 31/June 1 is coming into ‘model view’ as partly cloudy with chance for a shower on Sat and partly cloudy on Sun but dry.  Temps in the low 60s in most locations.  

Overall, the majority of the last 11 days of May are trending as dry & mild.