It has been pretty hot of late in the interior Northwest, but even hotter weather looks likely by Sunday and Monday.
Though temperatures in the Northwest will come down some the next couple of days, look for high heat to return this weekend. The hottest day of the weekend is likely to be Sunday. The monsoon high in the Southwest portion of the country will build northwest. As this happens, temperatures will rise once more. Here is Sunday morning GFS forecast for the 500 mb pattern.
The high temperatures I am expecting on Sunday are either some of the hottest of the year so far or are the hottest. There is actually the chance that some places could be a couple of degrees higher if the ridge is able to build a little more like some models portray. However, no matter how you look at it, HOT is what it will be. Even west of the Cascades, temperatures will spike, reaching the lower to middle 90s along the I-5 corridor. Only the coastal areas will still feel the marine influence.
These are my expected high temperatures Sunday. Monday looks just about as hot as Sunday.
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As of the end of June there had been no named storms in the Eastern Pacific basin.
This is some serious and dangerous heat. Outdoor activity is just not at all recommended during the daytime.
A strong ridge of high pressure in the West brings the highest heat of the season so far to a large area.
Combine the cold with the wind and some precipitation and there is a real danger of hypothermia.
Any shower and thunderstorm can contain heavy downpours, heavy enough to cause temporary, low-lying ponding.
According to all long-range models, the warmest area in North America compared to average will be over the Northwest.