The Hot Temps

Here are the “official” high temps around town today.  These are the NWS/FAA locations with ASOS sensors.  They are all well-sited out in the open and away from “heat sources”.  There is a common problem with home weather sensors (including mine with gets a bit too much morning sun).  It’s really hard to measure temperature correctly and it’s very easy to get too hot of a temperature.  You generally don’t get “too high” of a windspeed or “too much rain”, but temperature is a different creature.  If your temperature was more than 2-3 degrees from these you probably have your thermometer in a warm place, or it just might read warm in general. Your sensors must be away from pavement, walls, roofs, decks etc…keep in mind that one of those objects/surfaces 20 feet “upwind” can give you the same effect.  I see the “Rivergrove” on MADIS and “Liberal” were 112 and 108!  Those are extreme examples.  But I see one location in Washington County where two sensors read 97 & 98 and then another one nearby was 102.

One other thing to keep in mind; I notice most home weather sensors mention in the specs that the resolution could vary 1-2 degrees…another reason to always check yours against an official location near your home.

344 Responses to The Hot Temps

  1. Chuck on MT Scott says:

    Up here it’s quite breezy. Any idea if the wind will calm down a bit tonight?

  2. Karl Bonner says:

    Thought I’d spice things up here by talking about the temperature and cloud gradients today.

    Eugene got to about 75 today but we had mostly sunny skies from about noon onward. But apparently up north not only was it even cooler, but the low clouds and even drizzle were relentless. Even The Dalles was cooler than Eugene today and the northeast quadrant of the state was generally on the mild side, probably owing to that trough passing by to the north.

    It’s interesting to watch the temps and clouds in this kind of pattern. Too little marine air (or too far south or east) and you get hot (85+) in the afternoon. Too much or too far north/west and you’re socked in. Eugene and the south valley hit that perfect setup today.

    • pappoose in scappoose says:

      I thought it was perfect in the land of gravelly plains today with high of 64 and clearing in the afternoon. Presently 60.4

    • Jesse-Orchards says:

      There was more going on today than simple interactions with marine air. A cold airmass at the upper levels has dived down the Canadian coast and will spin over and to the east of the Pacific Northwest the next few days.

      Note the strong winds and DPs plummeting into the 20s and 30s east side. That doesn’t happen with an average marine push.

  3. Rob "Wrath" S.E. Portland says:

    18z is trying to get us back into some very warm/hot conditions into the extended period.
    It IS the 18z, so can’t take this too seriously. 🙂 Hopefully the 00z GFS/EURO agrees though.

    • Jesse-Orchards says:

      90s by hour 276! Just around the corner!

      Let’s just ignore the fact that temps peak no higher than low 80s the first 11 days of the run. 😉

  4. Battle Ground Brian says:

    There is always a notorious cool spot on the East side of BG lake this time of night near the railroad tracks.

    at 628pm it was 61.0 there with full sunshine. Hard to believe that in mid July,

    • Jesse-Orchards says:

      It’s 64 here in full sunshine right now. This is an impressive airmass.

    • Mark Nelsen says:

      Yeah, made somewhat significant adjustments to the 7 Day after taking the helm today…cooler for most periods.

    • Jesse-Orchards says:

      I like the changes. Nice looking 7-day!

      I hope PDX makes 40s tonight instead of sitting at 50 like you’re forecasting. I think it’s possible.

      Tomorrow morning’s record low of 48, and Wednesday morning’s record low of 51 are both in jeopardy IMO.

  5. Tyler in Hazel Dell says:

    Skies clearing all over the NW…also notice the storm just explode in SW Texas

    • Margaret in Fairview says:

      Oh, man! I’m from Texas originally. That mother is bigger than Dallas-Fort Worth-Houston combined! Fortunately out there is nothing but cows and cactus so shouldn’t cause too much damage to people and structures. Although, I feel for the cows….

    • Rob "Wrath" S.E. Portland says:

      Fortunately that storm never turned severe and I cannot find any Local Storm Reports or from the NWS. It is though causing some flooding rains over the lower Pecos valley with some canyons, draws, etc.

  6. Jim in N. Tabor says:

    A little off the subject but does anyone know where Drew Jackson went after the changes at KPTV ? I wonder if we’ll see him on another channel in the future, I always thought he did a great job.

    • Battle Ground Brian says:

      I am friends with Drew on facebook. Looks like he might have moved to Bend to live with his parents for a while.

  7. Jesse-Orchards says:

    The stage appears to be set for some record lows to fall in the Willamette valley tonight. Skies are clearing, DPs are in the 40s, and temps remain low, probably just topping out in the upper 60s to around 70.

    If skies stay clear and winds light there will be widespread low-mid 40s tomorrow morning, maybe even upper 30s in some coast range valleys.

    Even PDX may eke below 50. The record to beat for them is 48 set in 1968.

  8. Wecoma cam, currently off the coast northwest of Lincoln City:

  9. chris s says:

    64 here in west salem and sun not having much success at breaking through still. Does not look like we make much more than 70 at this point today. Last year i believe around this time we had a pretty good thunder storm in salem so must be something the 11th i believe ?

  10. 65° with marine layer starting to break up.

  11. Jesse-Orchards says:

    PDX has held at 61 the last three hourly updates, with DPs in the mid-upper 40s. This is a darn cold airmass for mid-July!

  12. Battle Ground Brian says:

    Only 60.1 here at 1205pm with OVC and strong NW breeze.

    Not looking too promising to hit 70 here today.

  13. yevpolo19 says:

    I came back form Seaside, and it was drizzling for about 10 hours yesterday but I still managed to get a tan! haha

  14. Tyler in Hazel Dell says:

    I love to watch the tree pop up as they are unburied from the winter’s snow.

  15. WEATHERDAN says:

    Cloudy and 61 here in Salem this AM. Blue skies ought to break out by 11 AM or so. Probably hit 76 by 5 PM.

  16. Battle Ground Brian says:

    54 degree low this morning but no drizzle like yesterday. The ceilings were a bit higher due to cooler air aloft coming in. I like the fact that the marine layer looks moth eaten this morning instead of a solid deck. I don’t mind cool summer weather, I just hate the low stratus OVC lingering the whole day.

  17. RobWaltemate says:

    Well, it never dried out yesterday here next to the beach. Only .04″ but it drizzled all day. To wet to mow, but not wet enough to stop the sprinklers. LOL

  18. SilentReader says:

    A little drizzle last night and this morning up here in the scappoose hills. Not surprised as the marine layer started coming in thick around 7pm-8pm yesterday. Could see the distant haze of precip on the distant hills so knew it was coming. Dropped to low 60’s by 8pm and am at 52 now as I write this. Must say it is nice to know it will stay nice and cool in the house today.

  19. Ryan (Walnut Grove) says:

    Gold star for the GFS. It continues to pump out perfect weather through the entire run. If it stays with that forecast through September I’ll be a very happy camper! 🙂

  20. Paul D says:

    Very nice this morning! 🙂

  21. 59.6° and a nice marine layer this morning. Thank You!

  22. Battle Ground Brian says:

    00Z GFS @ TTD

    Looking quite nice as the 60’s are no longer in the 16 day outlook. Looks like 70’s to low 80’s and dry.

    But.. Still a little below normal.

    • W7ENK says:

      Upper 70s to low 80s would be perfect! 🙂

    • Ryan (Walnut Grove) says:

      Average for PDX this time of year is 79 those numbers are indeed average for July! If anything it is slightly above average with 5 of 7 days forecasted at 80 to 83 degrees.

    • SilentReader says:

      the way I look at the word “Average”, when it comes to temps, is not to take that number as what is expected. Rather what is a result of many above and below it. Therefore, it is probably better said that a July day could normally deviate up or down 5 or so degrees and still be normal. I think when we get outside that deviation range then we start thinking it is cold or hot for a given period. . Ok up early this morning and too much coffee sorry 🙂

    • Mark Nelsen says:

      I would say that for this area, “normal” in July would be anywhere between 70 and 90 for a high, but it has to be up and down,not all at one end or the other.

  23. W7ENK says:

    The flood of cool marine air is spilling into the N Willamette Valley, and it feels really nice outside right now. I may, however, need to shut off my window fan as it could get a little chilly in my room overnight.

    [Milwaukie] 7/11/2010
    N 11.0 mph at 8:47p
    Didn’t get any drizzle here this morning.

  24. Mike (Orchards 255') says:

    63 feels good degrees out…

    Lets keep it this way for a while…

  25. Paul D says:

    The 7-day forecast now shows Monday at 70!!! YES!!! 🙂 🙂 🙂

  26. chiefWright says:

    OK, the N wind has picked up down here, and temps are dropping– from 83 at 7:30 to 78 at 8:40. Feels a bit more humid (wish I had a gage!), but clouds don’t appear to be thickening much except further up the foothills.

    What say ya’ll? Is my hay in the field safe tonight? No worries– I absolve you of any liability in advance, and take full responsibility on myself for whatever happens!!

    • Battle Ground Brian says:

      I think you are fine Chief, not sure where you are located, but it sounds like you are somewhere south of Portland in the Willamette valley? The only place prone to AM drizzle tomorrow will we foothills in SW washington and maybe upslope areas east of I-205 in SE PDX. This looks like a dry trough so there is no chance of precip at all from say Aurora southward. Matter of fact Eugene will be mostly sunny tomorrow as they are further south and will get a drier northerly wind in the afternoon.

    • Boydo3 500' North Albany says:

      Agreed. No worries.

    • chiefWright says:

      I’m about halfway between Molalla & Silverton, just at the edge of the foothills. And a bit of drizzle wouldn’t be much of a problem, as long as it doesn’t persist.

      Right now, the cloud layer has thickened a bit, but not enough to cause me worry.

      Thanks for the input!

  27. pappoose in scappoose says:

    The low clouds are here and the temp is dropping like a rock, 68 presently.

  28. Battle Ground Brian says:

    66 degrees Broken low clouds, lenticular looking in nature because of stronger winds aloft coming in.
    The top of Silver Star Mtn (el4390) is in the clouds now so ceilings are around 4000ft right now.

  29. chiefWright says:

    Saw lots of low-level lenticulation coming back from Hood River today, then startled to see a broad cloud bank S of PDX! NWS & private forecasts are showing only clouds, cooler temps, and no precip–
    But I’ve got about 300 bales of hay in the feild right now, and would appreciate some additional input–
    Whaddya think, folks? Should I call in my “high school team” tonight and get those bales in the barn?

    • Ryan (Walnut Grove) says:

      Only if you live somewhere that is prone to getting drizzle or light showers. Such as at the foot of the cascades or somewhere that clouds get some lift and get that moisture wrung out.

      Forecast is dry as a bone. 🙂

  30. BeavertonChris says:

    Down to 76 already after a high of 85. I will be glad to temporarily see cooler weather tomorrow and Tuesday. Goes to show how icky the spring was, I’d normally be used to warm or hot weather by now and be loving it!

  31. Steve Pierce (Vancouver, WA.) says:


    On behalf of Oregon AMS President Bobby Corser and myself, we would like to invite all of you to join us on Twitter and Facebook. Our goal is to add at least 20 additional followers to our ever growing list. It is quick, easy and open to anyone. Please follow the links below. We look forward to seeing you. If you have a friend or coworker who is interested in weather, please feel free to forward them this information as well.!/group.php?gid=37830790459

    Thanks a ton!

    Bobby Corser, Oregon AMS President
    Steve Pierce, Oregon AMS Vice President

  32. W7ENK says:

    Some good mid-level clouds moving over at this hour, blocking the sun at the moment. Still muggy, and it really hasn’t cooled off much since 4:30 or 5 – still 85 degrees. Winds are still pretty light from the WNW, too.

    • W7ENK says:

      Oops… scratch that! 80 even, winds increasing W 8.7 mph, RH rising 47%.

      Clouds building to the South and SE, bases darkening, tops lifting? It’s all moving that way, so it could be butting up against the mountains?

    • Battle Ground Brian says:

      That is some sort of weak boundary forming south of Portland. Marine air is flooding in from the NW right now causing a little lift forming those clouds you see to your southeast.

  33. Boydo3 500' North Albany says:

    High of 88 today. 84 now with NNW. Should get some good cooling tonite. Karl, you’re right, it feels pretty humid but compared to the Country east of the Rockies, this a dry heat!

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