Crude oil prices dropped under $80 per barrel on the New York Mercantile Exchange Friday after reaching a peak for the year this week.

Crude oil prices closed at $81.19 per barrel Thursday after reaching higher in mid-session. On Friday, prices settled further, dropping 87 cents to $79.63 per barrel.

Heating oil prices also dropped, losing 0.0141 cents to $2.0615 per gallon. Reformulated gasoline prices shed 0.0088 cents to $2.035 per gallon. Natural gas prices lost 0.16 cents to $4.787 per million British thermal unit.

At the pump, the national average price of unleaded gasoline was $2.636 per gallon Friday, up from Thursday's $2.616, AAA said.