Natural gas-related exchange traded funds climbed Monday as forecasts for hotter temperatures ahead helped fuel the electricity demand outlook for cooling. The United States Natural Gas Fund (UNG) rose 5.1% on Monday. Meanwhile, Nymex natural gas futures were up 5.2% to $7.38 per million British thermal units. While weather models over the weekend moderated slightly in [...] The post Natural Gas ETFs Rally as the Summer Heat Turns Up appeared first on ETF Trends .