Memorial Day Weekend Forecast

7pm Thursday…

The weekend is just about here, and it sure won’t start with the weather we saw today.  Portland hit 80 81 degrees this afternoon, that’s after cloudy skies through noon.  It was a quick warm-up once sunshine arrived!

Todays Observed Highs OrWa 2017

Strong high pressure remains in the eastern Pacific through the weekend.  But a slight shift farther away from us tomorrow and Saturday allows two weak weather systems to move south out of Canada.  Compared to 24 hours ago, that 2nd system Saturday is looking stronger and will give us lots of clouds and showers.  That system is quite cold for late May; sticking snow will fall down to Timberline Lodge at 6,000′ or even a bit lower tomorrow evening through Sunday morning.  Only hardcore tent campers will be having a good time in the mountains Friday & Saturday.



  1. The first two days (Friday & Saturday) will be cloudy, cool, and occasionally wet in Western Oregon and Washington.  That includes the western Gorge and Cascades
  2. Sunday and Monday turn warmer again, with just a chance of an afternoon/evening shower drifting off the Cascades and down into the lowlands.
  3. This means Sunday/Monday are your best outdoor days with warmest temps


Forecast for the ocean beaches (this works for central Oregon coastline as well)


It’ll be very chilly camping in the Cascades through Saturday.  Then much better (but not rain-free) Sunday-Monday.   Expect afternoon showers to build over the mountains each of those days.


Enjoy your weekend, it appears the mild/warm weather will continue into the last few days of May (next week).  That’ll wrap up another warm spring.

MarkSpring WrapUp

Chief Meteorologist Mark Nelsen




27 Responses to Memorial Day Weekend Forecast

  1. PAUL D says:


  2. W7ENK says:

    Decent bit of rotation in the thunderstorm to the South of Pendleton.

    Strong storms firing over the Cascades this afternoon are moving almost due West…

  3. Registered Nerd says:

    So I have a weather related story from this weekend…my buddy and I were bikepacking a 110 mile circuit around madras (started in Terrabonne), Friday into Saturday was awesome weather, even swimming in a creek near the deschutes, etc. The 2nd night we planned to camp somewhere around mile 84 of our trip (north of Grey Butte somewhere). We knew rain was coming and felt somewhat urgent to get our shelter set up before the drenching. Somewhere over the course of the day we made a dumb decision: let’s try to push through all the way to Terrabonne, finish the route and not have to spend the night in the rain. Well, just as we cycled to the top of Grey Butte, nightfall began and the soaking initiated! We were a bit disoriented in the dark, and the clay dust of Grey Butte put our bikes out of commission. The wet clothes began to give us hypothermia as the temp dropped into the 30s. We made a quick decision we couldn’t safely navigate out of the wilderness and set up my 2 man tent and both took off wet clothes and bunkered down in our mummy bags as the rain poured! It poured a solid 4 hrs before sometime early am it seemed to slow down. The next morning with no clothes that were dry, incapacited bikes, and 12 miles from town, we sheepishly called search and rescue who graciously came to pick us up at the nearest forest road. Never thought I’d do that, but a bad decision to beat the rain over a mountain was definitely a lesson I shall remember.

  4. W7ENK says:

    Spend half the weekend in Corvallis. Rain started Saturday right about 1pm and continued at varying intensities all through the night and even into late Sunday morning. Definitely more than just showers, that was some solid, steady rain. Ended up with a measured 0.33″ back at home in Milwaukie by Sunday afternoon, then a few showers overnight brought another 0.04″ Was hoping for some thunder, but nothing materialized in PDX metro.

  5. Larry says:

    Quite a storm cell in Mount Angel right now. Just had a lightning strike that practically shook my house. It was so loud I jumped up out of my chair!

  6. .27″ yesterday. Quite welcome given how warm and dry it has been in recent weeks.

    • Roland Derksen says:

      0.51 inches here yesterday. I think we’ll still end up with only about half our normal precipitation amount for May.

  7. JERAT416 says:

    Stayed dry for me in Parkrose until close to 2pm yesterday. Then back home in Tigard, decent steady rain. Felt more like a March day. 7 day looks pleasant, no heat wave, mostly dry and slightly above average temps. I say that’s a good way to end the month.

  8. Tyler Mode in Battle Ground says:

    0.47″ yesterday and waking up to 45 degrees and fog this morning.

  9. andy says:

    Very wet day here in Albany with .60 inches of rain. This was more than showers today.

  10. Roland Derksen says:

    Yes, it’s been quite up and down recently as far as temperatures are concerned. I think Cliff Mass is predicting a cooler and wetter summer than normal- did I read that right?

  11. Jake in Gresham says:

    Very surprised at the turn the weather has taken as of recent. Where we had several days in the 80’s? I thought that was it for weeks on end of rain and we were just going to deal with a dry, hot and smoky Summer. Curious what June brings.

    • Joshua Lake Oswego says:

      Weeks on end of rain? Come on now. We have had 1.11” of rain since April 20th. Well below normal.

      • W7ENK says:

        Come on now, we’ve had rain on 33 out of the last 50 days.

        You wanna split hairs? We could literally do this all afternoon.

        • Joshua Lake Oswego says:

          Yes, we can. Why not? 9 of the last 33 days. That encompasses Jake’s “last several weeks”.

        • K says:

          You seem oddly against everything he posts. It’s strange, you two almost seem like the antithesis of each other….

        • W7ENK says:

          Portland’s average rainfall for the month of
          April is 2.4 inches.

          Portland rainfall, April 2019 = 2.98″
          Above average.

          Portland’s average rainfall for the month of
          May is 2.1 inches.

          Portland rainfall, May 2019 (23 days) = 1.09″

          With 8 more days of data to add to that pile, and a wet weekend about to ensue, I anticipate that if we still end up with below average rainfall for this month, it won’t be by much, and the two month aggregate for April and May will still end up being slightly above average.

        • W7ENK says:

          I’m just slinging data, K.

          And offering a different perspective. There’s so much “Oh, whoa is me, the weather sucks, too much sun, everything is on fire, we’re all gonna die…” going on in here lately, it’s obnoxious.

          Just enjoy the weather, people!

  12. W7ENK says:

    With such cold air aloft and the high sun angle this time of year, any sun breaks could lead to some vigorous convection.

    Again, one can hope, but I wont hold my breath.

  13. Ken in Wood Village says:

    Thanks for the update Mark.


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