Oil lower; natural gas up 6.8% on weather forecast

SAN FRANCISCO (MarketWatch)
Oil futures ended modestly lower Monday as worries about Spain's rising cost of debt kept fears of decreased demand in the front burner
Oil for July delivery was off 76 cents, or 0.9%, to end the day at $83.27 a barrel on the New York Mercantile Exchange
Other energy products ended lower, with natural gas the outlier, with the July contract up 6.8% on warmer-than-normal weather predictions in most of the U.S
The contract ended 17 cents higher at $2.64 per million British thermal units