| | Retail Gasoline Prices by Grade by Formulation |
| | . |
| | Washington, Regular |
| | . |
| | Conventional |
| | Date | | Areas | | RFG Areas | | Average |
| | 01/12/09 | $1.941 | $1.941 |
| | 01/05/09 | $1.845 | $1.845 |
| | 12/29/08 | $1.788 | $1.788 |
| | 12/22/08 | $1.784 | $1.784 |
| | 12/15/08 | $1.784 | $1.784 |
| | 12/08/08 | $1.850 | $1.850 |
| | 12/01/08 | $1.970 | $1.970 |
| | 11/24/08 | $2.077 | $2.077 |
| |
| | Washington, Midgrade |
| | . |
| | Conventional |
| | Date | | Areas | | RFG Areas | | Average |
| | 01/12/09 | $2.074 | $2.074 |
| | 01/05/09 | $1.981 | $1.981 |
| | 12/29/08 | $1.919 | $1.919 |
| | 12/22/08 | $1.913 | $1.913 |
| | 12/15/08 | $1.928 | $1.928 |
| | 12/08/08 | $1.991 | $1.991 |
| | 12/01/08 | $2.110 | $2.110 |
| | 11/24/08 | $2.218 | $2.218 |
| |
| | Washington, Premium |
| | . |
| | Conventional |
| | Date | | Areas | | RFG Areas | | Average |
| | 01/12/09 | $2.246 | $2.246 |
| | 01/05/09 | $2.171 | $2.171 |
| | 12/29/08 | $2.037 | $2.037 |
| | 12/22/08 | $2.031 | $2.031 |
| | 12/15/08 | $2.039 | $2.039 |
| | 12/08/08 | $2.104 | $2.104 |
| | 12/01/08 | $2.220 | $2.220 |
| | 11/24/08 | $2.318 | $2.318 |
| |
| | Last Updated 1/12/2009 |