Gas in Washington averaged $2.58 in 2009 — $3.87 in today’s money
Average, that year
$2.58
In 2025 dollars
$3.87
The average price of a gallon of regular gasoline in Washington across 2009, shown both as it was at the pump and adjusted for inflation to constant 2025 dollars (CPI-U).
Across the year
How Washington prices moved through 2009
Weekly average for regular gasoline. The year’s high was $2.96 the week of September 14, 2009; the low was $1.84 the week of January 5, 2009 — a swing of 60.4%.
View the weekly data (52 weeks)
| Week of | Nominal | 2025 $ |
|---|---|---|
| January 5, 2009 | $1.84 | $2.80 |
| January 12, 2009 | $1.94 | $2.95 |
| January 19, 2009 | $2.00 | $3.03 |
| January 26, 2009 | $2.00 | $3.04 |
| February 2, 2009 | $2.03 | $3.08 |
| February 9, 2009 | $2.14 | $3.24 |
| February 16, 2009 | $2.20 | $3.32 |
| February 23, 2009 | $2.18 | $3.30 |
| March 2, 2009 | $2.16 | $3.27 |
| March 9, 2009 | $2.15 | $3.26 |
| March 16, 2009 | $2.13 | $3.23 |
| March 23, 2009 | $2.17 | $3.28 |
| March 30, 2009 | $2.25 | $3.41 |
| April 6, 2009 | $2.29 | $3.47 |
| April 13, 2009 | $2.32 | $3.51 |
| April 20, 2009 | $2.33 | $3.53 |
| April 27, 2009 | $2.34 | $3.54 |
| May 4, 2009 | $2.36 | $3.57 |
| May 11, 2009 | $2.48 | $3.74 |
| May 18, 2009 | $2.53 | $3.82 |
| May 25, 2009 | $2.62 | $3.96 |
| June 1, 2009 | $2.69 | $4.04 |
| June 8, 2009 | $2.77 | $4.15 |
| June 15, 2009 | $2.86 | $4.29 |
| June 22, 2009 | $2.90 | $4.34 |
| June 29, 2009 | $2.86 | $4.28 |
| July 6, 2009 | $2.84 | $4.26 |
| July 13, 2009 | $2.77 | $4.16 |
| July 20, 2009 | $2.71 | $4.07 |
| July 27, 2009 | $2.73 | $4.09 |
| August 3, 2009 | $2.78 | $4.15 |
| August 10, 2009 | $2.87 | $4.29 |
| August 17, 2009 | $2.88 | $4.30 |
| August 24, 2009 | $2.88 | $4.30 |
| August 31, 2009 | $2.92 | $4.36 |
| September 7, 2009 | $2.95 | $4.40 |
| September 14, 2009 | $2.96 | $4.41 |
| September 21, 2009 | $2.96 | $4.41 |
| September 28, 2009 | $2.92 | $4.35 |
| October 5, 2009 | $2.85 | $4.23 |
| October 12, 2009 | $2.78 | $4.14 |
| October 19, 2009 | $2.75 | $4.09 |
| October 26, 2009 | $2.80 | $4.17 |
| November 2, 2009 | $2.84 | $4.21 |
| November 9, 2009 | $2.84 | $4.21 |
| November 16, 2009 | $2.84 | $4.21 |
| November 23, 2009 | $2.85 | $4.22 |
| November 30, 2009 | $2.84 | $4.20 |
| December 7, 2009 | $2.83 | $4.19 |
| December 14, 2009 | $2.81 | $4.16 |
| December 21, 2009 | $2.77 | $4.10 |
| December 28, 2009 | $2.77 | $4.10 |
Year over year
How 2009 compares, adjusted for inflation
2009 was Washington’s 18th-most-expensive year for gas on record, adjusted for inflation — equivalently, the 7th-cheapest of 24 years (2003–2026).
Every grade
Washington fuel prices by grade in 2009
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 | $2.58 | $3.87 | — |
| Midgrade | $2.70 | $4.05 | +12.3¢ |
| Premium | $2.81 | $4.21 | +22.9¢ |
Common questions
Washington gas prices in 2009, answered
- What was the average price of gas in Washington in 2009?
- The average price of regular gasoline in Washington in 2009 was $2.58 per gallon — about $3.87 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 2009?
- Washington's weekly average for regular gasoline peaked at $2.96 the week of September 14, 2009 and bottomed out at $1.84 the week of January 5, 2009 — a swing of 60.4% across the year.
- Were gas prices in Washington higher in 2009 than in 2008?
- Adjusted for inflation, regular gasoline in Washington was cheaper in 2009 than in 2008, down 23.9% year over year.
- How does 2009 rank for gas prices in Washington history?
- Adjusted for inflation, 2009 was the 18th-most-expensive year for regular gasoline in Washington out of the 24 years EIA has published weekly prices (2003–2026).