It’s The Hottest Summer Ever Recorded In Portland

You just survived the hottest summer (by far) we’ve seen here in Portland.  The numbers:

BMAC Summer Wrap

BMAC Summer Wrap2

Here is one more graphic NWS just put on their Facebook page…looks like you folks in Salem and Eugene saw your hottest too!


We’ve only got a few hours left in our…


Of course we still get lots of warm weather most Septembers, just like we still get some winter weather in March (most years), but the heat of summer is gone now and this year the timing of the weather change is just about perfect.

By the way, the 1st, 2nd, 3rd in the first graphic refer to June as the hottest June on record, July is 2nd hottest, and August was 3rd warmest.

In about 10 days we should get the official NCDC stats for the entire USA.   It’ll be interesting to see how much of Oregon/Washington was in record territory for the summer.

The ECMWF weekly maps came out this afternoon and seem to show the same thing they have for a week or so…that after 7-10 days of this cooler weather, we go back into ridging and warmer weather again for a couple of weeks.  That should be a nice wrap-up to summer with more comfortable mid-September “heat”.  I doubt we’ve seen our last 90.  But if we’re lucky we’ve seen our last 95!









One more note, it appears we set (or tied) 8 record highs, 9 (warm) record lows, and of course a new record for days above 90 degrees.


Chief Meteorologist Mark Nelsen

79 Responses to It’s The Hottest Summer Ever Recorded In Portland

  1. Tyler Mode in Battle Ground says:

    3 consecutive days with highs in the 60s. That hasn’t happened since June 1st, 2nd and 3rd. It’s nice! Low of 42.4 this morning, my coolest since June 17th.

  2. vernonia1 says:

    yikes! Mark is not winning……everyone needs to go here & vote vote
    vote!!! 🙂

  3. Jason Hougak says:

    53F and cooling quickly, fall is here and am so ready for it. My 2nd favorite season following winter. Spring would have to be 3rd and then I guess summer.

    • timbers15 says:

      Interesting how many people like the same seasons as I do. I cannot wait for foggy, crispy days ahead. Enough with this dry, super-hot summer….yikes!

    • Boydo3 N. Albany says:

      My fave is fall too. Unfortunately it ain’t here yet. There will many more days in the eighties and maybe a 90 or two..

  4. brian says:

    Joe bastardy 15/16/ winter outlook.

  5. MasterNate says:

    Im digging the new 7 day. 70’s all the way!

  6. brian says:


  7. WEATHERDAN says:

    69 and cloudy at 4:00 PM. Our high was 70 at around 1:00 PM. Our dp is 52 and with the cloudy skies we should stay in the 51-53 degree range tonight. That would be a record breaking 73 consecutive nights. With partly cloudy skies tomorrow night we might drop into the upper 40,s. The two week period from Saturday the 5th through Friday the 18th looks warmer and drier. Highs mainly 78-88 with maybe a very low 90,s or two mixed in. Lows from 45-55 with little or no rain. I will miss our warm weather when it is gone for the year. I have AC both upstairs and down but choose not to use it. I live for the Summer. I don’t ski but I do want snow in the mountains. But I enjoy Summer the most of all the seasons. Peace.

  8. Hal in Aims says:

    heavy shower with hail just blew up right over us……

    • David B. says:

      Cool and windy but surprisingly sunny up this way. Forecast mentioned showers and thunderstorms, but none seen yet.

    • David B. says:

      Ah. Looking at the radar really clears things up. Zonal (west-to-east) flow today. I’m squarely in the Olympic rain shadow when that happens. Gonna be dry for me until the wind direction changes.

  9. Tyler Mode in Battle Ground says:

    Absolutely stunning day! Upper 60s and sunshine this afternoon with a nice breeze. It’s going to be a chilly night too!

  10. D says:

    It seems like there were more days in August under 85, than over.

  11. WEATHERDAN says:

    70 and mostly cloudy at 1:00 PM. No rain now since Sunday afternoon. Only .64 since Saturday morning. 91 consecutive days over 70. Record is 98 in 2014. This morning we tied our all time record for consecutive nights over 50 set in 2014 at 72. The 5 hottest Summers in Salem’s history 5. 2013, 4. 1958, 3. 1967, 2. 2014, and 1. 2015. So three of the five hottest Summers ever recorded in Salem the last five years. I call that a trend not an anomaly. I think this Winter could be a real wild card. With odds favoring a warm and dry Winter. However nothing would surprise me at this point. I really feel that whatever we do get will be extreme. For that seems to be an unhealthy trend for us. Lots of extreme weather. Here are are few examples of this extreme weather since 2013. September 2013. Severe TRW in Southern and central Willamette valley. September 2013. Heavy winds and rain the last weekend of the month. This was an unprecedented storm for so early in the season. December of 2013 Heavy snow and subzero temperatures in the central and Southern valley. Eugene dropped to -10. Salem to +8. Corvallis and Eugene had a foot of snow. February 2014. 2nd Arctic blast and snowstorm in Western Oregon. Salem had 18 inches of snow. Summer of 2014, Hottest Summer ever in our recorded history. Autumn 2014. Warmest Autumn in our recorded history. Winter 2014-2015. Record warm Winter and low snow pack. Spring 2015. Record warm Spring. Salem had 9 days over 60 in February and 22 in March. Summer 2015. Even hotter than 2014. Both at night and during the day. Fall and Winter of 2015-2016. ????????. Stay tuned. Peace.

    • Garron by Hillsboro Airport says:

      I like to think extreme! I just hope it’s not extremely boring this winter! I am excited to see what nature has in store for us this year, and what the predictions our local weather junkies will provide for this upcoming winter at OMSI.

  12. Hal in Aims says:

    trw heading up the gorge….

  13. schmit44 says:

    27 years ago today was by far the hottest day ever recorded outside “meteorological summer”. An amazing 105° at PDX which broke the all-time monthly record by 4 degrees.

    • We didn’t get quite as hot up here around that time, but I remember the next day (Sept.3, 1988) being the hottest day I’d ever recorded in September. (92F)

    • Joshua says:

      Look at those lows though. If that was this year, I fear the lows would be a good 10 degrees warmer at least. We can barely break 60 degree lows in the best-case scenario this summer.

    • Garron by Hillsboro Airport says:

      That was the best day ever! I was in high school, and we met a bunch of girls we went to school with, in down town Portland to celebrate the last real summer day off. We then went to a park in SW Portland called Gabriel park, and had a bonfire. A friend, who’s older brother worked at the Hillsdale pub, provided a keg of beer, I mean apple cider…lol and we sang and drank, “apple cider” till the sun came up the next morning! Kids, don’t try this at home!

    • G. Carich says:


      I remember that heat wave. It was windy (E) and very dry, of course. Clear. (I live 5 mi. S. of PDX.) We don’t have weather like that anymore, not much. Sultry is becoming more and more common.

      The lows? 60F is the new 55F. PDX is at 53 nights of 60F lows and counting for the summer. A new record every day…

  14. Tyler Mode in Battle Ground says:

    Upper 30s at Paradise on Mt. Rainier this morning. No doubt snow just a little bit further up 🙂

    • PurpleHaze says:

      The article previous to that one is actually more interesting. I like his blog but he is too Seattle centric ignoring anything further south and he only allows Google + Google FaceBook but more confusing to setup for commenting. Ewwwwww!

    • PurpleHaze says:

      BTW: You do know there are far more exciting climate zones in the PNW then Seattle right?

    • David B. says:

      As a fan of active winter weather, it feels odd to be rooting for a good, strong El Niño to develop. I guess weather, like politics, can breed strange bedfellows 🙂 .

    • brian says:

      Joe bastardi disagrees with the cfsv2 showing the blob gone by this winter and agrees with the jamstec and euro seasonal outlook which keeps the blob warm water off our coast thu next spring along with a strong ridge over the NW during the winter months and a trough in the east. so we well see.

  15. schmit44 says:

    9/1/2015 Oregon (All) Temperature Summary

    High:93 at Rye Valley(I-84(2229 ft)
    Low: 66 at JUNIPR(359 ft) & ROWEWS(104 ft) & WYETH(102 ft)

    High:54 at HEBOWX Mt. Hebo(3160 ft)
    Low: 25 at KIRK (4519 ft )

    Largest Diurnal Change: 51 degrees
    CROW FLAT (78/27 ) (5172 ft )

    Heaviest Rainfall:
    0.71″ at MEARES Cape Mear(1421ft)
    0.47″ at Astoria Regional(10ft)

  16. paulbeugene says:

    Fog season coming soon

  17. Jason Hougak says:

    At my location in the foothills, we had snow sleet freezing rain where we got 1/2″ of snow with about a 1/4″ of sleet and freezing rain in mid November. We had 2″ that lasted a week at the end of December and into January. Then we had almost an inch in mid April with the classic Ana Front.
    The weather week looks fantastic for hunting season. Below freezing temps in the mountains and a chance of light snow in the high country Thurs. into Fri. Bring on the rut!

  18. WEATHERDAN says:

    75 and sunny at 1:00 PM. Should reach about 80. The first time since last Friday. We were supposed to have gotten some showers today but they all stayed North of Portland. Today is our 90th day in a row over 70. The record is 98 set in 2014. This mornings low was 59. This was our 71st morning in a row of +50 lows. The record is 72 set in 2014. Portland is warmer at night than Salem in the Summer. Salem is generally warmer during the day. But I am not surprised that overall Portland was warmer. Besides Mark knows his facts. And also has a sharp wit to boot. This cool spell has really underwhelmed me so far. Neither as cool or as wet as advertised. Still it was a nice change of pace. Looking forward to OMSI weather conference in October. Of course now Mark checks his presentation before he goes on. (MEOW). That is an inside joke of course. In 2013 Mark’s presentation had a meow sound every time Mark turned a page. It was the highlight of the conference. Mark took it in good spirit of course. Welcome to September. Peace.

  19. G. Carich says:


    Nice bar graphs on Hell Summer 2015. You should have added 60F nights. 52 and counting (53 9/1). 50 was the record just one year ago and it took until mid Sept. The average (1980-2010) is 25. In 1970 the average was 1.

  20. runrain says:

    That data is wrong. Salem is significantly warmer than Portland in the summer. 🙂

  21. lmh says:

    Where do you live Brian, it wasn’t in the Portland area. We didn’t have any snow, only some freezing rain in November and September is generally always our nicest month.

  22. Great summer here as well- likely our warmest, but yesterday saw my lowest afternoon maximum since April 30th. And for David B.; We ended up with a wetter than average August here, thanks to the 31st. (again).

    • David B. says:

      2.84″ for last month here, definitely above average. Looks like things will probably dry out a fair bit by the end of the month, given overall forecast trends. But it’s very unlikely to get as parched as it was earlier last month; it’s just not going to get super warm and dry like June and July were with the days getting shorter and shorter. It’s safe to say that the worst of this summer’s drought is over for me.

    • Hi David; Just adding that my total for August was 3.04 inches, with about 40% of that coming on the 31st.

  23. brian says:

    Nice to see a return to summer after 4 inches of rain in August, looking forward to a dry and warm September hopefully this will be the trend heading into fall and winter with a strong El nino giving us a break from the cold and snow we saw last winter.

    • David B. says:

      What cold and snow?

    • brian says:

      We had two arctic blast one in late Novermber and another one in late December early Jan last fall/winter and I did have snow on both events with lows in the low teens and highs near 30 for a week in both cases,

    • Mark Nelsen says:

      We didn’t have any arctic blasts in Portland last winter and no snowfall in the lowest elevations either. Are you up in Puget Sound Brian?

    • …on;y “arctic” anything i remember from last winter was the cold snap in early november…

    • brian says:

      Yes, on the east side of the Olympics higher up.

    • StormyClimate says:

      Snow is not measured at the Portland International Airport. It is measured at the Portland National Weather Service to the east of there and only measured a trace last winter for 2014-15. Snow is basically measured from July 1st to June 30th of the next year.

      I believe the area “brian” mentioned was on the above hills west of Hood Canal or toward the northeast out Sequim. In all fairness he was not specific on the location there was snow. Off hand here I do not have any numbers on snowfall in that area but I could find out probably if anyone is interested.

  24. Sifton says:

    (1 more time)……..BEST SUMMER EVER!!!
    &&& with 45ish days to go!!


  25. schmit44 says:

    8/31/2015 Oregon (All) Temperature Summary

    High:88 at CW6811 Grants Pa( 947 ft) & MERLIN SEED ORCH(1144 ft)
    Low: 63 at JUNIPR(359 ft) & WYETH(102 ft)

    High:53 at MT HOOD TEST SIT(5370 ft) & MT. HOWARD(7910 ft)
    Low: 23 at CROW FLAT (5172 ft )

    Largest Diurnal Change: 52 degrees
    Beatty (79/27 ) (4320 ft )

    Heaviest Rainfall:
    0.85″ at K7ZQU-7 Santiam(4790ft)
    0.63″ at Portland-Troutda(36ft)
    0.44″ at Brookings Airpor(459ft)
    0.41″ at CW5646 Portland(656ft)
    0.35″ at DW2058 Sherwood(177ft)

  26. Jesse-Stevenson says:

    Don’t let Mark’s warm bias fool you guys. September will likely end up cool.

    • brian says:

      No it won’t, were due for a nice September I don’t recall the the last time we had one it’s been years.

    • Brian: how was September 2012 for you?

    • Mark Nelsen says:

      You’re alive Jesse! And I would expect nothing less in a comment. Especially after I had a continual cool-bias forecasting high temps all summer

    • gidrons says:

      Haven’t seen much of Jessie since Mark kicked his rear end in the temperature forecasting contest.

    • Timmy_Supercell (Klamath Falls, OR) says:

      Don’t know what you call a “nice September” but the PDX area had a record warmest September in 2014.

      It might be a little difficult to meet your definition of a “nice” September. 😉

  27. Portland had three heat waves this summer? When was the third one?

    • Mark Nelsen says:

      That’s a really good question. Brian made that graphic and I hardly even glanced at the small yellow line. I would call it “6 hot spells” Two in June (includes the 2 week long one), 2 in July, and in August. By that I mean periods where we rose to/above 90 for at least two days

  28. W7ENK says:

    Official Spotter Report — Milwaukie, Oregon

    45° XX.XXXX”N
    122° XX.XXXX”W

    29 AUG 2015 Saturday

    0410 TS with near constant lightning (every 2-3 seconds)
    0420 TSRA+
    0430 RA+
    0730 WND (onset)
    1100 PK WND S 23.6
    Rainfall: 0.42″

    Several momentary power disruptions.
    No significant power outages.
    Moderate tree damage.
    Significant tree debris.
    – Observed mostly leaves, green fir tree “fluff” and cones covering ground/roadway.
    – Observed several medium-sized branches down (larger than 2″ in diameter.)
    – Observed one large branch down (about 4″ in diameter) blocking roadway.
    – Observed one major tree downed (split trunk, larger than 12″ at separation.)

    30 AUG 2015 Sunday
    Rainfall: 0.68″

    Storm total
    Rainfall: 1.10″

    • Greg Carstens says:

      So was that spotter report called in? It doesn’t seem like any of the events you mentioned meet the spotter call in criteria. Based on lightning maps I saw that night the lightning was more to the west of your location toward the Coast Range from north to south. Anyway the lightning surely didn’t appear that frequent on the lightning maps I saw that night and I watched nearly the whole event on two websites with lightning maps but as the NWS always says…”When in doubt, call”.

    • Boring Oregon says:

      Greg, cloud to cloud lighting does not show up on that map.

    • David B. says:

      So you got gypped somewhat in the wind department but 1.10″ is not shabby at all in the rainfall department, particularly for August. And it proves those who scoffed at my assertion that it indeed was possible for the Willamette Valley to get a good summer soaking wrong.

    • W7ENK says:

      You are correct, Boring. It was an incredible sight, witnessed and reported by many others on this blog, too — from Salem to Longview, Sandy to Hillsboro. My only gripe would be that it didn’t last nearly long enough!

      David, my place is somewhat wind sheltered to the South, so I didn’t really expect a very high reading. The wind was definitely much stronger in the neighborhood though, evidenced by the level of tree damage around. It takes quite a hefty wind to snap 4 inch branches and bring down a tree with a trunk maybe 15-18 inches in diameter. I would think that’s somewhat relevant information as far as the NWS is concerned, right?

  29. MasterNate says:

    I hope that’s the last post about our summer. I’m ready to bury it forever and move on to another chapter. Nothing personal Mark. I enjoy all your posts. I’m just burned out on all the hot weather. Literally.

    • Paul D says:

      Me too. I enjoy Mark’s posts, but this one is filled with bad news. Setting heat records isn’t good. Time for some records in the opposite direction!

    • pappoose in scappoose says:

      Ya, “survived” is a good way to describe it.
      Bring on fall!

  30. Tyler Mode in Battle Ground says:

    That’s awesome. Mostly for the fact that it’s behind us, and hopefully we don’t have to repeat anything close to it anytime soon!

    • Mark Nelsen says:

      Yeah, even a 90 degree day in September is no big deal…when the low is 52

    • Jason Hougak says:

      Our glaciated peaks cannot stand for these kind of years much longer. Was nice to see fresh snow on Hood today from Govy. Replaced a hand pump at Frog Lake Campground. The static water level went from 42′ when it was drilled to 193′ today. Well depth 238′. A long way to manually pump water from the ground but the Baker Hand Pump did the job.

    • Thank for you for replacing that hand pump, Jason. We were just at Frog Lake and it was a real workout getting water out of that old pump (not to mention the copper shavings). I hope Frog Lake is looking better now that it’s got some rain. It was extremely dry.

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