Lenny Ignelzi, AP
In this Feb. 21, 2012, photo, the pump at a Shell Oil gas station shows a purchase of $68.73 for 15.6 gallons of gas in Del Mar, Calif.

Gas prices quickly rose to $3.92 a gallon across the nation and then stayed there. But some experts say higher gas prices are on the way, according to MSNBC.

"In about two weeks we're going to see more refineries go into maintenance, and prices are going to creep up," Patrick Dehaan, retail price expert with GasBuddy.com, told MSNBC. Dehaan also said he expects gas prices to be between $3.95 and $4.35 a gallon by the end of the month.

Refineries schedule a time for maintenance in the first quarter of every year when gasoline demand is down. Clean air laws force refineries to make gasoline mixtures that won't evaporate as much in the hot weather, Dehaan told MSNBC. Some refineries have just started the change.

The national average for gas prices is already the highest it's ever been at this time of year, according to the article. Gas prices are above $4 a gallon in 10 states and Washington, D.C., and gas prices are up 65 cents since Jan. 1.

Click to read the whole article at MSNBC.

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