Natural gas prices posted their biggest drop in more than three weeks on Monday, on signs of cooler weather and softer-than-expected demand ahead. Prices for the front-month July contract settled down 8.3 cents, or 3%, at $2.733 a million British thermal units on the New York Mercantile Exchange. It was the largest one-day percentage loss in more than three weeks and the lowest settlement since June 8. The contract fell as soon as electronic trading opened Sunday evening and drifted lower for most of Monday as traders checked weather forecasts on the first day of summer for the Northern Hemisphere. Weather updates showed cool temperatures moving into the Midwest by Thursday and then pushing across the rest of the eastern states. Chicago’s high temperatures are likely to be four to seven degrees Fahrenheit below normal, and then the weekend will bring even cooler weather, eight to […]