A serious Heat Event continues to capture our attention; in the mean time, enjoy the pleasant summer temperatures before Nature’s Oven gets left open. Here’s the breakdown.

• Aug 2,3 weekend:  Warm temps, primarily in the upper 80s, with slightly cooler temps around the Sound.  East side a bit warmer.  More thunderstorms possible to the east, esp late Sunday. 
• Next week, Aug 4-8:  Generally, ‘cool’ for summer, with temps in the 70s under an onshore flow.  Patrons up in the Puget Sound north could get a few showers late Thu the 7th; cloudiness elsewhere in western WA; limited clouds around Oregon.  Enjoy the coolness, as the big heat-up begins soon.
• Weekend of Aug 9,10:  This period will mark the transition into what could be multiple days of triple-digit temps in many west side locations.  Saturday should be in the 90s region wide, excluding the usual ‘bit cooler’ Puget Sound.  Sunday will begin the climb — Medford triple-digit; Willamette Valley & SW WA high 90s.
• Week of Aug 11-15:  MAJOR HEAT WAVE.  Temps this DAILY this week are modeled to climb into the 103-105 range by Wed the 13th (108 Medford).  Overnight lows will be uncomfortable for folks w/o air conditioning (65-73).  Monday of this week will likely be the coolest day - if you want to call it that - at 99.  Again, around the Puget Sound & BC it will likely not be so hot.  (This heat dome is not like the historic Canada-based high pressure ridge of late June 2021.)
• Weekend of Aug 16,17:  Yes, the HEAT WAVE CONTINUES into this weekend.  Triple-digits probable in many west side locations.  

—> The pattern driving the heat wave is NOT modeled to change much when the week of Aug 18 arrives, as an onshore flow has yet to be indicated.  

Too early to confirm every detail of the upcoming Heat Event, but we have seen this pattern on the charts for quite a few days now.  Hence, the forewarning.  Patrons that will be traveling away from home —> make plans this coming week to be sure pets & plants will receive adequate care.  Farm animals will need extra water.  All of us MUST pay attention to neighbors that do not have air conditioning, as this type of heat wave is life-threatening.

Several hot cycles are charting over the next 20 days, with “breaks” in between.  Keep the ice handy.

The upper-level High pressure ‘dome’ currently setting over the SE United States - resulting in triple-digit temps - is charting to shift to the western US in several days.  Be ready for triple-digit temps, esp in western OR & SW WA.  

• This week, July 28-Aug 1:  Turning hot Tue & Wed; temps in the 90s in western OR; high 80s around the Puget Sound.  Cooler in Friday.  Thunderstorms possible along the OR Cascades, with a very slight chance for a storm cell to drift over western valleys on Thu.
• Aug 2,3 weekend:  Pleasant summer temps in the 80s, as an onshore flow taps down summer heat.
• Week of Aug 4-8:  Slowly heating up during the week, with temps rising into the 90s by the end of the week.  Note that southern BC and the far north corner of WA may experience some cloudiness as weak system slides to the east of the BC Coastal Mountains.
• Weekend of Aug 9,10:  Heat build-up continues, with upper 90s the rule in western OR and east side.  Heating up to the north, as well.  Possible for a triple-digit reading in Medford and maybe as far north as Eugene.
• Week of Aug 11-15:  Triple-digit temps in many western locations, including Portland area.  The extreme heat could last 3-4 days.  Latest model runs are tapping down the threat for 103-106 degrees, but that has been on the charts, at times.  Either way, this could shape up to be miserable weather.  Southern BC will also be hot.

We will monitor this situation closely, per usual, and keep Patrons posted as to what could become a major summer weather event. 

Obviously, around the PNW, Summer months are supposed to be dry, yet a good rain here & there is refreshing (the last general rain was June 14).  The rainy weekend that some model solutions projected for the first weekend of August has been shifted a few days later - if at all.  Anyway, let’s take a look.

• July 25 - Sunday the 27th:  Pleasant weekend ahead - temps will be tapped down a few degrees as an onshore flow, under a cool upper-level Low, passes over southern BC.  Sunday will likely be the warmer day.
• Next week, July 28 - Aug 1:   Given a S-to SE flow aloft, it will heat up again early in the week, with humidity bumping up, as well.  The pattern also brings on afternoon thunderstorms over the eastern basins and the Cascades.  Some of these storms could migrate out over the western valleys.  Most of this action, if it develops, will take place Wed-Fri.  Idaho may also pick up a storm or two.
• Weekend of Aug 2,3:  Now trending warmer than the previous week.  Thunderstorm threat diminished.
• Week of Aug 4-8:  This is when models are bringing down some moisture out of the Gulf of Alaska - MAYBE.  Temps will be warm early in the week, with the chance for rain - mainly over western WA - arriving Tue night on through early Fri.  OR could pick up some raindrops Thu and/or Fri.  This whole pattern change is quite uncertain.  
• Weekend of Aug 9,10:  Dry with pleasant temps on Sat; turning warmer Sunday.  Region could be setting up for another hot spell that next week.

—> The primary aspect of this long-range forecast is whether or not the PNW gets raindrops from a Low pressure system that may move close to the west coast from the Gulf of Alaska.  Right now, we are going to call it a ‘coin toss’ — 50/50 chance.  Otherwise, raindrops won’t fall on anyone’s head.  Stay tuned, Patron.

Models suggest that we are at the front end of an extended period of fairly pleasant conditions.  Admittedly, for some folks, there may be too many ‘morning marine cloud’ days, but overall, the afternoon high temps look to be comfortable for outdoor activities.  Will that last into early August?  Let’s take a peek.  Sip on.

The cool air mass that swept over the PNW this past weekend will slowly departing, leaving behind a ‘fair weather pattern’ for a couple of weeks.

• This week, July 21-25: turning a bit warmer each day, with temps in the pleasant 75-84 degree range, overall.  Fri the 25th will present slightly cooler temps brought on by an increasing onshore flow.  Breezy afternoons.
• This weekend July 26,27: A tad cooler than normal, yet pleasant.  Morn’n clouds may go with your Mug start-up.
• Week of July 28-Aug 1: Looking to remain on the cooler side of Summer; dry & windy afternoons, esp along the coast. 
• 1st weekend of Aug 2025: This portion of the forecast gets dicey.  Meaning, recent solutions indicate a strong ‘fall-like pattern’ of clouds & moderate rain; other runs suggest continued mild conditions & dry.  
• A major aspect of a fall-like pattern on the charts is the Pacific Summer High pressure dome shifting farther to the NW corner of the Gulf of Alaska.  We’ll hold off on pegging such a forecast until another series of model solutions arrive.
• Week of Aug 4-8: Actual outcome depends on the position of that Pacific High - wx could continue damp or remain in the summer mode, per normal.  Rinse your Mug and get it handy.

It’s that time of year again —> to keep our ears alert for the ’Song of Summer' - when crickets begin to chirp their song.  Sure, there are some crickets, here & there, chirping in various locations, but it is during the late July-to-Aug 13 period, that the true chorus of chirping gets underway.  A great time to have young ones pay attention this detail of the PNW.  

Another summer work-week has zipped by.  No change in the overall wx outlook for the balance of July.  We will still Mug up to The WxCafé™️ counter.  

☕️Ready?

• Definitely a pleasant wx weekend, with some morning marine clouds around the Puget Sound region.  Highs in the 80s most places, maybe a few hitting 90 today in OR & east side.
• Slowly heating up again next week, July 12-25.  Temps may reach into the low 90s late week, however, most charts top afternoon highs out around 8; cooler around the Sound, per normal.  We pick Thu as the warmest day. 
• July 26,27 weekend: looks to be a repeat of the previous weekend -> temps cooling down a few degrees.  Pleasant across the entire PNW.
• Week of July 28 - Aug 1st: copy-cat week - trending to mirror the previous week.  Seasonal temps, no extreme heat is forecast at this time.  Classic summer afternoons around the entire PNW.
• 1st weekend of August: trending mild, with an onshore flow holding down regional temps.  A morning marine cloud deck in the interior valleys is possible.