Natural-gas prices on Monday slid to a nearly eight-month low as another sweep of unseasonably cool weather across the U.S. is expected to keep a lid on demand. Gas prices have slid 24% since mid-June as cooler-than-normal temperatures have reined in the use of power-thirsty air conditioning. In the hotter months of summer, rising electricity consumption has spurred power plants’ natural-gas demand. This year, the lack of that additional demand has resulted in a rapid buildup of natural-gas supplies, which has weighed on prices. Natural gas for August delivery, the front-month futures contract, dropped 10.2 cents, or 2.6%, to $3.849 a million British thermal units on the New York Mercantile Exchange. Monday’s close was the lowest since Nov. 26. The cooler-than-normal temperatures have extended into the latter half of July and are poised to continue into the beginning of August, a period that is usually the […]