October Nymex natural gas (NGV25) on Friday closed up +0.007 (+0.24%). Oct nat-gas prices recovered from a 1.5-week low on Friday and posted modest gains as forecasts for late-summer US temperatures sparked short covering in nat-gas futures.  Forecaster Atmospheric G2 said Friday that forecasts shifted warmer in the South and mid-continent for September 17-21, which will boost nat-gas demand from electricity providers to power the increased air conditioning usage. More News from Barchart Nat-gas prices ...