 Headed towards the busy 4th of July holiday Thursday, the average price for a gallon of regular gas in New Hampshire is $3.37. That's up three cents from last week, according to AAA. The current national average is $3.49 per gallon. New Hampshire is ranked the second healthiest state to raise a child. The Canadian online prescription referral firm, Universal Drugstore, based the rankings on factors including childhood obesity, youth sports participation, water served containing contaminants, and youth e-cigarette use.