There were six ski areas open in North America for the start of July. At the start of August there are still there, but two of those will close after the first weekend on August 6th.
Only the Timberline snow field on Mt Hood in Oregon is set to stay open through August.
A heatwave in the Western US led to Squaw Valley deciding to end its season in mid-July, still its latest operating date ever, but falling a bit short of plans to stay open indefinitely on Saturdays through summer and possibly Autumn. Another Californian ski area, Mammoth (pictured), says it will close on August 6th, the second latest opening in its history, and the latest for 27 years. It is down to 10% of the 9 metre base it built up in winter, by far the deepest base in the world for quite a few years.
Copper Mountain, which has been operating a summer snow terrain park, says it will also finish its summer snow season on August 6th and Mt Bachelor in Oregon which opened briefly in for the US Independence Day Holiday last month and Whistler Blackcomb have also finished their summer snowsports.