Natural gas futures climbed Friday, rising for the third straight session, as forecasts for a widespread cold snap suggested above normal demand for the heating fuel, on the heels of the first storage withdrawal of the winter season. Natural gas for December delivery rose 6.4 cents, or 1.7%, to $3.766 a million British thermal units on the New York Mercantile Exchange, earlier reaching their highest level since Oct. 21. Prices have gained nearly 6% over the past three trading days as weather forecasts have turned increasingly bullish for the fuel used by roughly half of U.S. all households as their primary heating source. “Temperatures are still looking cold and are now expected to stay that way through the first week […]