Natural gas rallied Friday, ending a lengthy selloff as the first sign of a winter chill led to the largest one-day gains in nearly two months. Prices for the front-month December contract settled up 6.4 cents, or 2.8%, at $2.321 a million British thermal units on the New York Mercantile Exchange. The gains blunted steep losses from earlier in the week, but gas still fell 6.9% over the last five sessions. Gas has fallen in six of the past seven weeks. It lost 8% for the month, its largest monthly fall since December. It has lost ground in fourth-straight months, the longest losing streak since September 2011. Natural-gas prices had slumped to three-year lows on worries that moderate weather will limit indoor-heating demand and keep the market oversupplied. Near-record production may put stockpiles at record highs heading into the winter, and an unprecedented glut could develop without cold weather […]