Today’s AAA National Average $4.528
Price as of 5/15/26
Today's AAA Wyoming Avg. $4.515
Price as of 5/15/26
Today’s AAA
National Average
$4.528
Price as of5/15/26
Today's AAA
Wyoming Avg.
$4.515
Price as of5/15/26
County Retail Prices
4.815 to 4.627
4.626 to 4.557
4.556 to 4.429
4.428 to 4.363
4.362 to 4.073
County average gas prices are updated daily to reflect changes in price. For metro averages, click here.
| Regular | Mid-Grade | Premium | Diesel | |
|---|---|---|---|---|
| Current Avg. | $4.515 | $4.817 | $5.113 | $5.502 |
| Yesterday Avg. | $4.504 | $4.805 | $5.094 | $5.495 |
| Week Ago Avg. | $4.412 | $4.701 | $4.986 | $5.466 |
| Month Ago Avg. | $3.892 | $4.188 | $4.488 | $5.058 |
| Year Ago Avg. | $3.152 | $3.446 | $3.730 | $3.434 |
highest recorded average price
| Price | Date | |||
|---|---|---|---|---|
| Regular Unleaded | $4.904 | 7/1/22 | ||
| Diesel | $5.716 | 6/29/22 |
Casper
| Regular | Mid | Premium | Diesel | |
|---|---|---|---|---|
| Current Avg. | $4.365 | $4.697 | $5.003 | $5.393 |
| Yesterday Avg. | $4.378 | $4.714 | $5.027 | $5.395 |
| Week Ago Avg. | $4.385 | $4.690 | $4.993 | $5.398 |
| Month Ago Avg. | $3.703 | $4.040 | $4.339 | $4.870 |
| Year Ago Avg. | $2.864 | $3.206 | $3.486 | $3.271 |
highest recorded average price
| Price | Date | |||
|---|---|---|---|---|
| Regular Unleaded | $4.673 | 7/3/22 | ||
| Diesel | $5.622 | 6/26/22 |
Cheyenne
| Regular | Mid | Premium | Diesel | |
|---|---|---|---|---|
| Current Avg. | $4.396 | $4.700 | $4.997 | $5.399 |
| Yesterday Avg. | $4.372 | $4.684 | $4.990 | $5.399 |
| Week Ago Avg. | $4.264 | $4.582 | $4.872 | $5.378 |
| Month Ago Avg. | $3.756 | $4.078 | $4.352 | $4.909 |
| Year Ago Avg. | $3.027 | $3.328 | $3.610 | $3.396 |
highest recorded average price
| Price | Date | |||
|---|---|---|---|---|
| Regular Unleaded | $4.706 | 6/15/22 | ||
| Diesel | $5.420 | 6/30/22 |