Washington gas price history
Washington gas price historyEvery weekly average the EIA has published for Washington since 2003-05-26 — 1,222 observations. Today is among the most expensive weeks on record: only 1% were dearer.
Your dates, compared
Was gas cheaper then?
Compare two published weeks in Washington. Inflation-adjusted prices use September 2026 dollars.
Published weeks: 2025-09-29 and 2026-09-28. A date between releases uses the preceding observation within seven days.
Prices as paid · per gallon
$4.449 → $5.453
22.6% change
In September 2026 dollars · per gallon
$4.615 → $5.453
18.2% change
Sources: US EIA weekly retail prices; BLS monthly CPI-U. The download includes actual observation dates, units and methodology. Prices are averages, not individual station quotes.
- Regular
- Diesel (West Coast (PADD 5) Except California)
Show the data as a table
Today’s Washington prices → What a 100-mile commute costs this week →
Where today sits
Average price by year
| Year | Average | In September 2026 money | Cheapest | Dearest |
|---|---|---|---|---|
| 2026 | $4.94 | — | $3.65 | $5.60 |
| 2025 | $4.13 | — | $3.75 | $4.54 |
| 2024 | $4.07 | $4.37 | $3.75 | $4.55 |
| 2023 | $4.45 | $4.92 | $3.70 | $4.99 |
| 2022 | $4.58 | $5.26 | $3.70 | $5.42 |
| 2021 | $3.45 | $4.28 | $2.60 | $3.81 |
| 2020 | $2.65 | $3.46 | $2.23 | $2.97 |
| 2019 | $3.11 | $4.10 | $2.74 | $3.46 |
| 2018 | $3.21 | $4.30 | $2.89 | $3.45 |
| 2017 | $2.85 | $3.91 | $2.62 | $3.04 |
| 2016 | $2.47 | $3.46 | $2.00 | $2.70 |
| 2015 | $2.70 | $3.83 | $2.11 | $3.18 |
| 2014 | $3.56 | $5.06 | $2.60 | $4.01 |
| 2013 | $3.64 | $5.27 | $3.28 | $4.01 |
| 2012 | $3.84 | $5.63 | $3.37 | $4.30 |
| 2011 | $3.72 | $5.57 | $3.21 | $4.06 |
| 2010 | $3.01 | $4.66 | $2.79 | $3.20 |
| 2009 | $2.58 | $4.05 | $1.85 | $2.96 |
| 2008 | $3.41 | $5.32 | $1.78 | $4.37 |
| 2007 | $2.97 | $4.82 | $2.43 | $3.42 |
| 2006 | $2.71 | $4.53 | $2.16 | $3.16 |
| 2005 | $2.37 | $4.08 | $1.81 | $2.96 |
| 2004 | $1.95 | $3.48 | $1.53 | $2.29 |
| 2003 | $1.64 | $3.00 | $1.50 | $1.95 |
Adjusted using published monthly BLS CPI-U (CUUR0000SA0), in September 2026 dollars. An adjusted annual mean is omitted if any weekly observation lacks published CPI. Compare against the national series →