A Historic June In Pacific Northwest

There’s a good chance you won’t see a June like this in many years!  We broke record after record…




  1. June was a full degree warmer than an AVERAGE July or August!
  2. Warmest night on record in June…71 degrees
  3. Not the driest, but 25 consecutive dry days is a new record
  4. Most sunny days, plus least # of cloudy days in June

Not on the chart, it’s the driest April-June we’ve ever seen here.  No, you’re not crazy, the ground is the driest you have ever seen it this time of year:


Of course we didn’t get the extreme heat at the end of the month like Eastern Oregon has seen.  It could have been worse!  Take a look at Hermiston:


We’re not done with the hot stuff yet.  The past two days my forecast has busted…yes it appears I have a “cold-bias” in my forecasting.  For whatever reason (possibly the warmer than normal offshore water?) surface temperatures have been consistently warmer than one would expect with significant onshore flow (yesterday & today) and 850mb temps in the +16 to +19 range.

The onshore flow goes just about flat tomorrow, then back to weak onshore Thursday before strengthening Friday.  As a result we should see temperatures JUMP a few degrees tomorrow.  94-97 should be common high temp numbers on the 1st of July.

When will the hot weather end?  The GFS says early next week high temps should drop quite a bit and it shows weak troughing nearby.  Yet the ECMWF keeps a narrow hot ridge centered between an upper-level low off California and a trough to our north.  Hmmm, they are once again at odds with each other.  Their respective ensembles seem to mainly support the operational runs as well.  So…I’m not sure if next week is the end of the hot weather or not.

Chief Meteorologist Mark Nelsen

17 Responses to A Historic June In Pacific Northwest

  1. WEATHERDAN says:

    95 at 3:30 PM. Headed for 98 today and 101 on Thursday. Our low this morning was 63. Keep the heat going. And no I don’t use my air conditioner even though I do have two of them. I love the heat. Peace.

  2. Garron near Washington square says:

    Mark, Thanks for the great info! I am loving this weather so far this summer. I was sure with how awesome last summer was, that we’d be paying the piper this spring/summer, but alas, we might be breaking summer weather records on the heels of the last one. So, to say we might not see a June like this one for awhile, might be a little premature. Not being hypercritical, just hoping for a three peat!

  3. David B. says:

    56 overnight, a nice break. It’s so dry here that all personal-use fireworks have been banned on the island.

  4. A fantastic June- but I don’t want to see a repeat! My mean temperature for the month was 67.8F- that’s 2 degrees warmer than my normal for a July, and 6.6F warmer for an ordinary June.I don’t want to see a rainy July here, but we need a big change for a few days anyway. This date in 1994 I recorded about 1.3 inches. Sure could use that amount today.

  5. W7ENK says:

    Why does one graphic say 25 consecutive dry days, and the other says 26? Which is it?? I’M SO CONFUSED!!!

  6. MasterNate says:

    A June I would like to soon forget.

  7. Timmy Supercell (Klamath Falls, OR) says:

    Klamath Falls for June 2015

    Average High: 84.6
    Mean: 66.0

    In a period of 1949-2014, June 2003 was the hottest with an average high of 79.8 degrees. I smashed this by 4.8 degrees.

  8. schmit44 says:

    6/30/2015 Oregon (All) Temperature Summary

    High:106 at NORTH FORK JOHN(1975 ft) & ALKALI FLAT(2495 ft)
    Low: 83 at Rye Valley(I-84(2230 ft)

    High:57 at Newport(30 ft)
    Low: 40 at KIRK (4519 ft )

    Largest Diurnal Change: 51 degrees
    ILLINOIS VALLEY (102/51 ) (1389 ft )
    CW5507 Camp Sher (99/48) (3020 ft)

    Heaviest Rainfall:
    0.18″ at EW5447 Eagle Poi(1342ft)
    0.18″ at CW0704 Long Cree(3773ft)

  9. WEATHERDAN says:

    95 today. 98-101 tomorrow and Thursday. Then it looks like a slow cool off begins. 92-97 Friday and Saturday, then 90-95 on Sunday. Next week looks like 87-92. Most would still call that hot. I just don’t see anything below 85 the next two weeks. Reminds me of 1967. We sure had a Winter like 1966-1967. June that year averaged 78.8 for a maximum, July was 85.0, August was 91.0, And September was still over 82. Only difference is that our over night lows are much warmer. We shall see. Happy Independence day. Peace.

  10. JohnD says:

    Thanks Mark for your compelling overview, as always.
    All I can say is “Wow”! Simply amazing.
    We’ll just have to see how this all continues to play, longer term.
    For myself, I am hiking in the Sisters Wilderness on the 4th. Blessed with great conditions!

  11. Paul D says:

    Thanks for write-up on June, Mark! Even though I don’t like the hot weather, I always enjoy your blogs! Keep up the great work!

  12. Paul D says:

    Please be the end!! We need rain. We need cooler weather.

  13. Lee Wilson says:

    Hypertension and high heat are lethal combinations.
    I was glad to feel the mist that arrived this morning.

    My plants in the greenhouses are doing good.

    On the inside we have ac and fans going while solar is supplementing computer, dishwasher and clothes washer minus spin cycle as it spike to 800 watts for a be if second.I just plug it in to the wall and then let it spin after.the brief spike it only uses 158 watts to spin the tub.
    Things are not run at the same time though.

    So for us the days are bitter sweet. Power from the sun, but then danger from the heat.

    And the animals can’t go out for too long either less they fall victim to heat stroke.

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