Gas prices are on the rise again, just as Americans hit the highways for Thanksgiving. Gas prices rose about 5 cents per gallon nationwide compared to two weeks ago, industry analyst Trilby Lundberg said Sunday.

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The national average for self-serve regular was $2.23 on Nov. 17, according to Lundberg's latest survey of 7,000 gas stations across the country.

The national average for mid-grade was $2.34, while premium was $2.44 per gallon.

The lowest average price in the nation for self-serve regular was in Houston, where a gallon cost $2.05.

The highest average price in the nation for self-serve regular was in Honolulu, where a gallon cost $2.75.

California prices rose by more than double the national average, with an increase of 11 cents for self-serve regular since Nov. 3, Lundberg said.

Among California cities surveyed, the highest price was in San Diego, at $2.50 a gallon. The lowest price was in Sacramento, at $2.36 a gallon.