Don't start fuming, but Columbus now has the highest gasoline prices in Georgia and is even topping the torrid national average.

The average price of regular unleaded jumped four cents today in Columbus to a record $3.75 per gallon, according to the AAA Daily Fuel Gauge Report. That's up from $3.71 per gallon Monday and $3.675 per gallon Sunday — a 7.5-cent leap in two days.

Diesel is just as jumpy, pushing to a record $4.386 per gallon in Columbus today. That's a dime difference from Sunday, when diesel was selling for $4.287 locally.

Some economists and travel experts are expecting regular unleaded gas to top $4 per gallon before the summer is over.

Gas and diesel prices are complying with their predictions, it seems, hopscotching to unheard of levels.

Regular unleaded gas is now 45 cents higher than it was a month ago. It's nearly 85 cents higher than a year ago May 13.

For several weeks, Athens and Atlanta have laid claim to the highest gas prices in Georgia. They were trailing Columbus today by only a couple of pennies.

Augusta, as usual, has the lowest average gas price in the state. At $3.66 per gallon it is 11 cents lower than in Columbus.

Nationally, prices also are at all-time highs.

The U.S. average for regular unleaded gas today is $3.73 per gallon, AAA reported — nearly two cents lower than in Columbus. Diesel hit $4.39 per gallon.