Right now, a large low pressure system is located off Vancouver Island, sending multiple waves of energy and precipitation into the region. Here is the Infrared Satellite as of noon today.
|Infrared Satellite Image from 19z (12 PM PDT) July 8th|
This low has left some of the area lakes which are often packed with people enjoying summer recreation with a different scene, such as the picture below shows.
|View looking NW over Coolin Bay - 1046 AM PDT July 8th|
So when will this low leave the area? It will slowly migrate towards the southeast into Saturday sending another round of precipitation across the region. On Sunday the low should track into northern Oregon giving the Blue Mountains, Camas Prairie, and Lewiston area the best chances for rain . Here is the GFS model forecast depicting this scenario.
|12z GFS model forecast for 18z (11 am PDT) Sunday, July 10th|
Now, if you look at the map above you notice another low off the northern British Columbia coast. Will this ruin our weather for mid week? As it stands now, models show the low staying up there, but sending potentially a weaker system into the region around Tuesday as the graphic below shows.
|12z GFS model forecast for 06z Wednesday (11 pm PDT Tuesday, July 12th)|
So where is the hot and dry weather that July typically brings. See the big blue "H" on the map above. Typically this area of high pressure builds north from the Four Corners Region into the northwest at least to some degree. Will it make it by next weekend? See map below...
|12z GFS model forecast for 00z next Monday (5 PM next Sunday July 17th)|
What does the Climate Prediction Center maps show out this far? Here is their latest 8 to 14 day outlook.
|Climate Prediction Center 8-14 day outlook valid July 16-22nd shows elevated odds for cooler than normal temperatures|
The outlook calls for elevated odds for cooler than normal temperatures. And finally, what does the latest CFS model show for the month of July? You guessed it, cooler than normal.
So, for those looking for prolonged periods of this...
...you may have to wait until August.
While July will likely finish cooler than normal, don't be surprised by a few warm days, but again prolonged hot weather is not expected anytime soon.