Gas in Washington averaged $2.65 in 2020 — $3.30 in today’s money
The average price of a gallon of regular gasoline in Washington across 2020, shown both as it was at the pump and adjusted for inflation to constant 2025 dollars (CPI-U).
How Washington prices moved through 2020
Weekly average for regular gasoline. The year’s high was $2.97 the week of January 6, 2020; the low was $2.23 the week of May 4, 2020 — a swing of 33.4%.
View the weekly data (52 weeks)
| Week of | Nominal | 2025 $ |
|---|---|---|
| January 6, 2020 | $2.97 | $3.69 |
| January 13, 2020 | $2.96 | $3.68 |
| January 20, 2020 | $2.94 | $3.65 |
| January 27, 2020 | $2.92 | $3.63 |
| February 3, 2020 | $2.91 | $3.61 |
| February 10, 2020 | $2.92 | $3.62 |
| February 17, 2020 | $2.90 | $3.61 |
| February 24, 2020 | $2.92 | $3.62 |
| March 2, 2020 | $2.92 | $3.64 |
| March 9, 2020 | $2.91 | $3.63 |
| March 16, 2020 | $2.87 | $3.57 |
| March 23, 2020 | $2.70 | $3.36 |
| March 30, 2020 | $2.58 | $3.21 |
| April 6, 2020 | $2.48 | $3.12 |
| April 13, 2020 | $2.41 | $3.03 |
| April 20, 2020 | $2.31 | $2.90 |
| April 27, 2020 | $2.24 | $2.82 |
| May 4, 2020 | $2.23 | $2.80 |
| May 11, 2020 | $2.25 | $2.83 |
| May 18, 2020 | $2.28 | $2.87 |
| May 25, 2020 | $2.34 | $2.94 |
| June 1, 2020 | $2.37 | $2.96 |
| June 8, 2020 | $2.45 | $3.07 |
| June 15, 2020 | $2.51 | $3.14 |
| June 22, 2020 | $2.56 | $3.21 |
| June 29, 2020 | $2.61 | $3.27 |
| July 6, 2020 | $2.62 | $3.26 |
| July 13, 2020 | $2.65 | $3.30 |
| July 20, 2020 | $2.69 | $3.36 |
| July 27, 2020 | $2.71 | $3.38 |
| August 3, 2020 | $2.71 | $3.36 |
| August 10, 2020 | $2.70 | $3.35 |
| August 17, 2020 | $2.71 | $3.37 |
| August 24, 2020 | $2.73 | $3.40 |
| August 31, 2020 | $2.75 | $3.41 |
| September 7, 2020 | $2.75 | $3.41 |
| September 14, 2020 | $2.75 | $3.40 |
| September 21, 2020 | $2.73 | $3.39 |
| September 28, 2020 | $2.71 | $3.36 |
| October 5, 2020 | $2.69 | $3.33 |
| October 12, 2020 | $2.69 | $3.33 |
| October 19, 2020 | $2.67 | $3.31 |
| October 26, 2020 | $2.66 | $3.29 |
| November 2, 2020 | $2.65 | $3.27 |
| November 9, 2020 | $2.64 | $3.25 |
| November 16, 2020 | $2.65 | $3.27 |
| November 23, 2020 | $2.65 | $3.27 |
| November 30, 2020 | $2.65 | $3.27 |
| December 7, 2020 | $2.65 | $3.25 |
| December 14, 2020 | $2.61 | $3.21 |
| December 21, 2020 | $2.60 | $3.20 |
| December 28, 2020 | $2.60 | $3.20 |
2020: Washington and the national picture
2020 coincided with the COVID-19 pandemic. In Washington, the weekly average for regular gasoline ran from a low of $2.23 (May 4, 2020) to a high of $2.97 (January 6, 2020). Adjusted for inflation, the year’s average of $3.30 ranks 23rd-highest in the state’s weekly record.
How 2020 compares, adjusted for inflation
2020 was Washington’s 23rd-most-expensive year for gas on record, adjusted for inflation — equivalently, the 2nd-cheapest of 24 years (2003–2026).
Washington fuel prices by grade in 2020
Year-average price per grade. Premium figures are the spread drivers paid for higher-octane fuel that year.
| Grade | Avg / gal | 2025 $ | vs. regular |
|---|---|---|---|
| Regular | $2.65 | $3.30 | — |
| Midgrade | $2.95 | $3.66 | +29.0¢ |
| Premium | $3.07 | $3.82 | +41.4¢ |
Washington gas prices in 2020, answered
- What was the average price of gas in Washington in 2020?
- The average price of regular gasoline in Washington in 2020 was $2.65 per gallon — about $3.30 in 2025 dollars after adjusting for inflation, according to U.S. Energy Information Administration weekly data.
- How high did gas prices get in Washington during 2020?
- Washington's weekly average for regular gasoline peaked at $2.97 the week of January 6, 2020 and bottomed out at $2.23 the week of May 4, 2020 — a swing of 33.4% across the year.
- Were gas prices in Washington higher in 2020 than in 2019?
- Adjusted for inflation, regular gasoline in Washington was cheaper in 2020 than in 2019, down 15.7% year over year.
- How does 2020 rank for gas prices in Washington history?
- Adjusted for inflation, 2020 was the 23rd-most-expensive year for regular gasoline in Washington out of the 24 years EIA has published weekly prices (2003–2026).