Natural-gas prices rose to their highest levels in more than two months on Monday as forecasts for cold weather over the northern Midwest in the coming weeks prompted expectations of the season’s first gas-fired heating demand. Natural gas for November delivery rose 12.5 cents, or 3.1%, to $4.1540 a million British thermal units on the New York Mercantile Exchange. The settlement was the highest since July 9, and the day’s rally was the largest since June 12. The market has gained nearly 9% in the last four trading sessions. The market opened higher with the adoption of November as the new front-month contract, since it was trading higher than the just-expired October contract, and gained momentum as prices broke through levels where they previously stalled. “The market takes on strength in reaction to chatter about seasonal demand,” said Gene McGillian, an analyst with wholesale brokerage Tradition […]