Seattle and Portland endure another day of relentless heat gripping the Northwest
AP
By Madeline Holcombe, CNN
The mercury kept climbing Monday in heat-baked Portland, Oregon, and Seattle, again setting record highs.
Canada and US cities in the Northwest are all reporting their hottest temperatures on record in a wave that has more heat in store. More than 20 million people are under a heat warning or advisory, from the Canadian border to the Mexican border.
Seattle had topped its all-time record high Sunday when thermometers climbed to 104 degrees so hot that even the normally freezing temperatures above 10,000 feet on Mt. Rainier reached 73 degrees.
Portland and Seattle see record highs soar past 100 degrees as heat wave sweeps the Northwest
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Heat wave in Northwest: Portland and Seattle see record highs soar past 100 degrees
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