99 Final High Temp Today

July 1, 2014

Sophie High Was it the warmest day of this summer?  One would hope so, but historically it’s unlikely we’ve had our warmest temperature so far.  Take a look at just the past 10 years.

MarkYearly_DateofHotHighTemps

Last year the 97 on June 30th was the hottest of the summer.  The average over the past 10 years is July 28th, and you can see in about half the years the hottest of summer is in late July or August.

Cool marine air is surging inland nicely at 11pm with temperatures in most of the Willamette Valley down to around 70.  That cool air will continue to pour in through tomorrow.  High temps should be 15-20 degrees cooler as a result.  Part of the cooling will come from extensive mid-level clouds the first part of tomorrow due to an upper-level disturbance moving by.

Ahead of that disturbance this evening there is quite a bit of thunderstorm action moving north along the east slopes of the southern Oregon Cascades…actually heading into the Central Cascades at this hour.  So I wouldn’t be surprised to see flashing to our southeast within a couple of hours.

Chief Meteorologist Mark Nelsen


98 Today…As of 5pm

July 1, 2014

What a mid-summer scorcher today, take a look at the high temps!

PLOT_Highs_Metro

We get the high temperature from official observing sites every 6 hours, which in summer is 5pm and 11pm.  Now the 5pm temperature IS 98 degrees, which means it’s possible we’ve gone to 99 and don’t know it.  Portland NWS also puts out a climate summary around 7:20pm just for the PDX site which means for that site only we’ll really know what the high temp was.  Got all that???

More later…

Chief Meteorologist Mark Nelsen