Thursday, October 1, 2026

Washington gas prices jump 29 cents in one week

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WENATCHEE — Average gasoline prices in Washington rose 29 cents per gallon over the past week, reaching $4.58 per gallon Monday, according to a survey of 2,666 stations conducted by GasBuddy.

Prices are 55.8 cents higher than a month ago and 55.2 cents higher than the same time last year.

GasBuddy reported the lowest price in Washington on Sunday at $3.35 per gallon, while the highest was $5.79 per gallon, a difference of $2.44.

Nationally, the average price of gasoline rose 51.1 cents over the past week to $3.45 per gallon. The national average is up 54.1 cents from a month ago and 41.6 cents higher than a year ago, based on data compiled from more than 11 million weekly price reports at over 150,000 gas stations.

The national average price of diesel increased 85.9 cents from a week ago to $4.599 per gallon.

Among nearby metropolitan areas, Seattle recorded an average price of $4.77 per gallon, up 30.2 cents from last week’s $4.47. Tacoma averaged $4.54 per gallon, an increase of 18.9 cents from $4.35. Yakima averaged $4.24 per gallon, up 28.7 cents from $3.96 a week earlier.

Historical data shows Washington’s average gasoline price at $4.02 per gallon on March 9, 2025, $4.16 on March 9, 2024, and $4.16 on March 9, 2023. The state average was $4.68 on March 9, 2022, and $3.12 on March 9, 2021.

“In just a week, consumers have seen gasoline prices surge at one of the fastest rates in years after oil prices spiked following U.S. strikes on Iran and the effective closure of the Strait of Hormuz,” said Patrick De Haan, head of petroleum analysis at GasBuddy. “With additional attacks across the Middle East over the weekend pushing oil above $100 per barrel for the first time in years, fuel markets are now rapidly recalibrating to the risk of prolonged disruption to global supply flows. As a result, gasoline prices in many states could climb another 20 to 50 cents per gallon this week, with price-cycling markets potentially seeing increases as early as today. Diesel may rise even more sharply, with increases of 35 to 75 cents per gallon possible as global distillate markets react. While the situation remains highly fluid, consumers are already beginning to feel the impact as energy markets adjust to this sudden escalation.”

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