Updated

Nationwide gas prices hit yet another record in the last three weeks, rising just over one cent to nearly $3.03 per gallon, according to a survey released Sunday.

The national average for self-serve regular stood at $3.025 a gallon Friday, up 1.06 cents since July 21, according to the Lundberg Survey of 7,000 gas stations across the country.

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The price exceeds the previous high of $3.015 set in July, analyst Trilby Lundberg said.

A gallon of mid-grade gasoline averaged around $3.13, and premium averaged $3.23.

Nationwide, the lowest price for regular was $2.82 a gallon in Charleston, S.C., while the highest — $3.29 a gallon — was in Chicago.

Among California cities surveyed, the lowest price was in Sacramento at about $3.05 a gallon for regular, Lundberg said, while the highest price was $3.24 in San Diego. The state's average fell about 3 cents over the past three weeks to $3.17.