Gas prices often peak in the summer as Americans plan road trips and outdoor holiday activities.
The rise in gas prices has also comes as oil prices climbed steadily. Crude oil rose to its highest level in more than three years earlier this month, and is currently trading for about $70 a barrel.
Goldman Sachs forecasts that oil prices could reach $80 a barrel this summer. Other analysts forecast a barrel could reach $100 in the coming years.
Source: Economy - nytimes.com