Gas prices continued to fall over the past week, but a seasonal increase is not far away.

According to AAA, the national average Monday was about $3.42 per gallon. That’s about 5 cents less than a week ago but 13 cents more than a month ago.

Price-tracking service GasBuddy says increases are likely on the way, as gasoline prices typically rise between 35 cents and 85 cents per gallon between March and Memorial Day.

Gas prices in some areas have increased in recent weeks as the transition to summer gasoline approaches, said Patrick De Haan, head of petroleum analysis at GasBuddy.

“In addition, GasBuddy data shows that gasoline demand has risen for the third straight week, a trend that will likely continue as we gradually see temperatures warm and the heart of winter moves to the rear view,” De Haan said. “Also, refinery maintenance season will soon be in full force, likely putting upward pressure on prices.”

Enjoy it while it lasts!

Gas prices have continued to fall, now 7¢ per gallon less than last week on average. Gasoline prices typically rise between 35 and 85¢ per gallon between March and Memorial Day – so increases are likely on the way soon. pic.twitter.com/a0dShcYvJE

— GasBuddy (@GasBuddy) February 13, 2023

Pennsylvania continues to be among states with the highest average gas prices. The state’s average on Monday stood at $3.72, which is about 4 cents per gallon less than a week ago but 9 cents more than a month ago.

Pennsylvania is among 10 states — the others being Alaska, California, Colorado, Hawaii, Idaho, Nevada, Oregon, Utah and Washington — with the highest average gasoline prices, ranging from about $3.67 to $4.89 per gallon, according to AAA.

County averages across Pennsylvania range from about $3.52 to $3.90 per gallon, according to AAA. Averages in Pittsburgh-area counties:

• Allegheny: $3.82

• Armstrong: $3.79

• Beaver: $3.77

• Butler: $3.79

• Washington: $3.80

• Westmoreland: $3.84

GasBuddy reported the average in the Pittsburgh area at $3.80 per gallon, based on its survey of 731 stations. That’s about 13 cents per gallon more than a month ago and 22 cents more than a year ago.

Prices in the Pittsburgh area range from $3.49 to $3.99 per gallon, a difference of 50 cents, according to GasBuddy price reports.

Neighboring areas and their current prices, according to GasBuddy:

• Akron: $3.38, down 2 cents per gallon from last week.

• Cleveland: $3.41, down 4 cents per gallon from last week.

• West Virginia: $3.31, down 6 cents per gallon from last week.

Diesel has fallen to its lowest price in nearly a year, dropping 7 cents per gallon in the past week to $4.53, according to GasBuddy.

“Diesel prices likely have a long way to fall as inventories continue to improve,” De Haan said.