Maine’s statewide average of retail gasoline prices declined another 5.9 cents per gallon over the past week, to $1.79 per gallon, according to surveys by price tracking website GasBuddy.com.

This week’s prices stand 47.3 cents per gallon lower than the average price on Feb. 15, 2015, and 21.9 cents lower than prices one month ago.

Gasoline prices in New Hampshire posted a smaller week-to-week decline of 4.7 cents, to a statewide average of $1.71 per gallon.

Analysts warn that seasonal supply and demand factors arriving with warmer weather are likely to end the winter’s long slide in prices.

“Sadly, these incredibly low gas prices won’t be here forever, as refineries talk of production cuts with crude oil at a 13-year low,” says Jeff Pelton, a senior petroleum analyst for GasBuddy.com.