Low clouds hung around Jackson Hole for most of the Memorial Day weekend, but there were a few breaks long enough for a quick hike. Jackson Hole real estate activity: NEW: Melody Ranch single-family home with 4 beds, nearly 3,000 square feet on a half acre built in 2003, list $1.225 million. PRICE REDUCED: Bar B Bar home with 5 beds, more than 5,000 square feet on 3+ acres, now $545,000 less at $2.95...