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Hot, dry weather looks to barrel right through early September

KOMO's South Lake Union Camera on Aug. 28, 2017.

SEATTLE -- Just as July 5th is traditionally the start of summer weather in the Seattle area, Labor Day Weekend is traditionally the end of it.

Someone forgot to get the memo to Mother Nature.

This year, our hot and dry summer is set to roll right through the Labor Day Weekend and linger well into the first half of September.

While we flirt with 90 on Monday, we will briefly cool off for the middle part of this week.

But the relief is only temporary. Another thermal trough is expected to redevelop over Labor Day Weekend into the middle of next week with another round of upper 80s to 90s possible again.

Rainfall is once again absent for an extended period of time. Since Seattle's record dry streak ended at 55 earlier this month, we've started a new streak that stands at 16 days counting Monday. This new streak will easily get into the 20s.

Could it hit the 30s? The extended couple-week forecasts suggest we remain generally hot and dry into mid-September too!

There is just no pattern change in sight for us that will push out this mega ridge that's been baking the West Coast all summer.

What's this mean for records?

First of all, while we're not quite holding a candle to 2015's sizzler, we are once again experiencing a hotter than normal summer. Here is my "summer scoreboard" through Sunday (so, not counting Monday's scorcher):

If that seems like a lot of 90s for a city that's supposed to average 2-3 a year, it is. The National Weather Service 56 of the 217 90+ degree days on record at Sea-Tac have happened in the past 10 years -- and that includes 2011 (when we didn't have any) and 2013 when we just had two.

The National Weather Service in Seattle has been compiling some statistics on how this summer shapes up to our record books, both in the heat and lack-of-rain department.

  • From January 1 - June 17, Seattle had 101 days with measurable rain out of 168 (60 percent). Since June 18th to Monday (72 days)? Just one.
  • Wednesday will set a record with 63 consecutive days with high temperatures at or above 70 degrees in Seattle, breaking the old record of 62 set in 2015. This new record could stretch well beyond 70 days.
  • It will also be the first time Seattle has gone an entire July and August together with highs above 70.
  • If Seattle reaches 90 on Monday, it will tie the record for most 90 degree days in August (set...last year and in 1977.)
  • The average temperature in August will end up around 70 degrees making it the 2nd warmest August on record (behind 71.1 in 1967) and third warmest month on record (July 2015 / 71.2 degrees)
  • It will be the 4th August and 9th month overall on record at Sea-Tac Airport to have an average monthly high temperature at 80 degrees or warmer.
  • Ending up with 0.02" of rain will make it the driest July-August on record for SeaTac and tie with 1914 Federal Building records for driest July-August.
  • You've probably already heard about some record dry streak we had earlier this summer at 55 days. Seattle is now nearly halfway to getting a second dry streak in the Top 10 this summer.

At some point, autumn will arrive. Hang in there rain and cooler weather fans!

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