The heatwave ended today; a beautiful blue sky, temperatures in the 80s, and much lower relative humidity
That was after a sweaty six days of 90+ degree weather, peaking midweek with the 102 and 103
- There’s no sign of a heat wave, or even 90 degree temperatures, in Portland during the next 7-9 days
- Other than a sprinkle/shower tonight & Tuesday morning, or a light weekend shower, the dry spell continues
- This next week will have that “the heat of summer is over” feel. Nights are getting longer and we’ll be cooler each morning
- Expect more cloud cover, especially mornings Friday through next weekend.
- Most likely we’ll turn warmer again during the last full week of the month (after the 24th)
Sunday was our 24th day at/above 90 in Portland. That’s the 3rd highest number of those hot days…after 2015 & 2018.
With two weeks to go in meteorological summer (June-August), many parts of the Pacific Northwest are on track for the hottest summer on record. That includes Portland, Salem, Eugene, Medford, Olympia, Pendleton, Burns, & Redmond. It’s interesting that North Bend isn’t even close. That’s because that location is dependent on warmer than normal ocean waters for a “hot summer”. And 1997 is the all-time high there due to the Super-Nino that year.
Of course we still have two weeks to go. This next week looks a bit cooler than average; starting with a mainly dry cold front passing overhead this evening. You’ve probably noticed the cool northwesterly breezes, clouds, and quickly dropping temps. This is associated with a cool upper-level system dropping down into Eastern Washington. Another one drops in over us or just to the east again around Friday. The result is more typical late summer weather; onshore flow plus cloud cover at times, then sunny periods. You can see the ECMWF forecast for the next week, showing a strong upper-level ridge (above normal heights in the higher atmosphere) in the Gulf of Alaska. That leads to lower than normal heights and upper-level troughing over Idaho. This is the pattern that gave us a dry and cool-ish spring at times.
But most models (including this one) show the ridging edging closer to us NEXT week. This is Sunday the 22nd through Sunday the 29th; a warmer pattern again, although not necessarily hot.
Both patterns (this week and next) are relatively dry; there’s no sign we have a late summer showery pattern setting up.
Enjoy the comfortable weather the rest of this week! Chief Meteorologist Mark Nelsen