July Nymex natural gas (NGN24) on Wednesday closed up by +0.171 (+6.61%). July nat-gas prices Wednesday closed sharply higher as US weather forecasts turned warmer, which will boost nat-gas demand from electricity providers to power increased air-conditioning. NatGasWeather said on Wednesday that temperatures are expected to remain above normal in the western US and soar to 100 degrees in the southern US from June 12-19. Also, an expected below-average build in weekly nat-gas supplies supported prices as the consensus is for Thursday’s weekly EIA nat-as inventories to climb by +88 bcf, below t…