Retail gas prices continue to rise across northern New England.

GasBuddy surveys show the average retail price in New Hampshire is $2.11 per gallon, up 1.8 cents per gallon from last week. Prices were higher in Maine and Vermont, where the average price per gallon in both states is $2.21. In Maine, that’s a 2.5-cent increase from last week, while Vermont’s price reflects a 2.8-cent jump.

Nationwide, the average price of gasoline was $2.14.

Analysts say low prices have ignited an early surge in demand for gasoline. Demand usually peaks in the summer.