Sam's Club Gas Prices in August 2026: Down 0.59% Nationwide as Sub-$3 Gas Returns
A comprehensive look at 532 Sam's Club members-only fuel stations across 40 states. While the headline average dipped by just 2.2 cents, members experienced an 18-cent mid-month spike, sharp diesel inflation, and sub-$3.00 fuel bargains in select markets.
Aug 31 Regular Avg
$3.736
-$0.022 (-0.59%) vs Aug 1
Monthly Peak (Aug 23)
$3.780
+18.6¢ surge from Aug 11 low
Diesel Net Change
+$0.240
+4.73% (Climbed to $5.312)
Sub-$3.00 Bargains
$2.899
Lafayette, IN & Mansfield, TX
Throughout August 2026, members filling up at Sam's Club fuel stations experienced a headline decline of just 2.2 cents (-0.59%), as the national regular unleaded average moved from $3.758 on August 1 to $3.736 on August 31.
However, beneath this calm veneer was an intense mid-month price surge of 18.6 cents, double-digit percentage hikes for diesel fuel, sharp state-level divergences where Indiana fell by 24.1 cents while Wyoming leaped 31 cents, and rare sub-$3.00 bargains for warehouse members.
1. Fuel Grades: August 1 vs. August 31 Performance
| Fuel Grade | Aug 1 | Aug 31 | Change ($) | Change (%) | Aug Avg | Aug High | Aug Low |
|---|---|---|---|---|---|---|---|
| Regular Unleaded | $3.758 | $3.736 | -$0.022 | -0.59% | $3.709 | $3.780 (8/23) | $3.594 (8/11) |
| Midgrade (4 clubs) | $3.709 | $3.742 | +$0.033 | +0.89% | $3.705 | $3.801 (8/22) | $3.599 (8/07) |
| Premium | $4.509 | $4.478 | -$0.031 | -0.69% | $4.456 | $4.525 (8/23) | $4.351 (8/12) |
| Diesel (206 clubs) | $5.072 | $5.312 | +$0.240 | +4.73% | $5.173 | $5.344 (8/25) | $4.991 (8/11) |
2. The 18-Cent Mid-Month Surge
Daily pump prices at Sam's Club followed three distinct phases:
The 16.4¢ Slide
Prices retreated steadily over 10 consecutive days, falling from $3.758 to the monthly low of $3.594 on August 11.
The 18.6¢ Surge
Elevated crack spreads and high refinery utilization reversed early gains, driving prices to a monthly peak of $3.780 on Sunday, August 23.
Pre-Labor Day Cooling
Prices softened by 4.4 cents heading into the holiday weekend, closing August at $3.736.
Cheapest Day of the Week to Fill Up at Sam's Club
Due to weekend warehouse shopping trips, Sam's Club pumps experienced peak demand on Saturday ($3.721) and Sunday ($3.717). Visiting on Tuesday saved money and avoided lines.
3. State-by-State Winners & Losers
| 1. Indiana (11 clubs) | -24.1¢ (-7.10%) |
| 2. Maryland (9 clubs) | -20.2¢ (-5.09%) |
| 3. Ohio (25 clubs) | -17.2¢ (-4.56%) |
| 4. Michigan (21 clubs) | -18.6¢ (-4.50%) |
| 5. Delaware (1 club) | -17.0¢ (-4.35%) |
| 6. Georgia (21 clubs) | -10.8¢ (-2.95%) |
| 1. Wyoming (2 clubs) | +31.0¢ (+8.34%) |
| 2. Idaho (1 club) | +30.0¢ (+7.41%) |
| 3. West Virginia (5 clubs) | +15.0¢ (+4.04%) |
| 4. New Jersey (5 clubs) | +15.8¢ (+4.00%) |
| 5. Montana (2 clubs) | +16.0¢ (+3.85%) |
| 6. Kansas (9 clubs) | +9.8¢ (+2.76%) |
Cheapest States on August 31Regular avg
- 1. Indiana$3.151
- 2. Texas (75 clubs)$3.380
- 3. Mississippi$3.399
- 4. Kentucky$3.403
- 5. Oklahoma$3.406
Most Expensive States on August 31Regular avg
- 1. California (24 clubs)$5.200
- 2. Hawaii (1 club)$4.599
- 3. Nevada (7 clubs)$4.370
- 4. Idaho (1 club)$4.349
- 5. Montana (2 clubs)$4.314
4. Sub-$3.00 Fuel & Member Club Extremes
Sub-$3.00 Gasoline Returned to Select Clubs
On August 31, two Sam's Club fuel centers dipped below the $3.00 threshold:
Cheapest Member Locations
- 1. Lafayette, IN (#8169)$2.899
- 2. Mansfield, TX (#4911)$2.939
- 3. Evansville, IN (#8123)$3.099
- 4. Greenwood, IN (#6325)$3.119
- 5. Terre Haute, IN (#8135)$3.119
Priciest Member Locations
- 1. Santa Clarita, CA (#4824)$5.599
- 2. Palmdale, CA (#4767)$5.499
- 3. Folsom, CA (#6620)$5.399
- 4. Glendora, CA (#6240)$5.399
- 5. Chino, CA (#6610)$5.299
5. The Diesel Squeeze: Commercial Members Squeezed
Across the 206 Sam's Club fuel centers offering diesel, prices surged 24.0 cents (+4.73%) to average $5.312 on August 31.
Check current fuel prices at Sam's Club
Live pricing updated daily for 532 warehouse fuel stations.