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KEYSTONE, Colo. — Keystone Resort is delaying opening day because of the “unseasonably warm weather,” it was announced Tuesday.

“We have made the difficult decision to delay Keystone’s opening day, which was originally scheduled for Friday, Nov. 4,” officials said.

The resort is now hoping to open Nov. 11.

October 2016 was officially the fourth-warmest October on record, according to the National Weather Service. Temperature records go back to 1873.

Only Arapahoe Basin Ski Area has opened in Colorado.