100 Degrees, Warmest June Day in 8 Years!

June 5, 2016

Sunday 10pm…

PDX hit 100 degrees today, the 2nd earliest we’ve ever hit that number:

PLOT_Highs_Metro

We of course broke the daily record, so did Hillsboro, Vancouver, & Troutdale.  As mentioned in the previous posting, we’ve only gone above 98 degrees once before the 3rd week of June.  As a result, today’s 100 degree reading is the 2nd earliest on record here.

MarkSummer100DegreeDay

Now if you’re worried this is a sign of the summer to come, don’t panic!  I’ve got two thoughts on that.  First, in just 11 of the past 20 summers we’ve hit 100 here in Portland.  So I’d give it a 50/50 chance that we hit it again; it’s possible you just lived through the warmest day of 2016!  Maybe, we hope…

This caps off a historic first weekend of June weatherwise.  4 records at PDX; two highs and two record warm lows.

MarkSummer100DegreeDay2

Where do we go from here?  We are definitely getting a shallow marine push with cooler air surging into at least the westside of the Willamette Valley.  That will spread out and along with a slightly cooler atmosphere overhead means high temperatures should be right around 90 degrees Monday in the metro area.  A little more cooling is likely Tuesday, but high temps still remain well into the 80s.

Beginning Wednesday things go back to normal with more cloud cover and temperatures well down into the 70s.

Hate the hot weather?  There is good news for you.  All models are in great agreement that we are headed into a cooler than normal pattern starting late this week with showers at times.  Check out the GFS model ensemble temperatures for the next two weeks.

KPDX_2016060518_min_max_16

Ensemble means many different versions of the same model, so confidence is pretty high with this.  It appears much of the rest of June may not look at all like this first week.  The ECMWF model is almost exactly the same.  Two more very warm days and then normal to maybe a little below normal.

For the Junior Parade Wednesday afternoon, at this point it appears dry.  Comfortable temperatures too!

MarkRoseFestivalFcst_JuniorParade

Chief Meteorologist Mark Nelsen