Seattle-Portland See First 90s, 100s in Two Years While Heat Streak Snaps For Parts Of Midwest, West

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Following what has been a cool summer over the Pacific Northwest, yesterday saw Seattle, WA top the 90° mark for the first time in 2 years with a high eventually climbing to 93°. Portland, OR scorched to a record 102° yesterday and this was the first 100° in the Rose City since July 2009. According to The Weather Channel, Portland averages around one 100° day per year.

Following two days in the 90s, Seattle returns to the low and mid 80s Monday as marine influence returns

It’s all thanks to high pressure building into the region and shutting off the cooling marine influence. This summer, up until now has seen a trough dominate keeping things cool and unsettled. While it was hot Saturday, the jet takes a little dip back south and after the high pushes towards 94° or 95° in Seattle this afternoon, SW winds pick up and will pull Pacific air back into the coastal plain tomorrow. This will force Seattle to return to the low and mid-80s for Monday.

While the I-5 corridor cools, the interior won’t and more 100s will dominate through at least midweek.

Minneapolis only tops 78° on Saturday, first sub-80° since June 25 and a record tie of 39 straight days of 80°+

The heat has been relentless throughout the Plains and Midwest this summer and even up across Minneapolis where it hasn’t been outrageous, the Twin Cities have just ended an incredible 39 consecutive day stretch of 80°+ with a high yesterday of only 78°.

As for Denver, CO, the city has just ended an impressive streak of 24 straight days of 90+.

A lot of this exceptional heat which has expanded and covered large portions of the US has been enhanced greatly by the worsening drought.

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