Gas Prices September 2026

Gas Prices September 2026 have surged to levels not seen in years, driven by global conflict, refining constraints, and seasonal demand across the United States. As of mid‑September, the national average price for regular gasoline sits between $4.15 and $4.33 per gallon, marking one of the highest monthly averages in recent history. Gas Prices September 2026 show dramatic differences between states, with some drivers paying nearly double what others pay depending on regional taxes, supply limitations, and environmental regulations. This wide gap highlights how Gas Prices September 2026 are being shaped by both national and local factors, creating a challenging environment for drivers nationwide.

National Overview: Why Prices Are So High

To uTo understand why Gas Prices September 2026 are climbing so aggressively, it’s important to look at the broader fuel market and the forces influencing supply and demand. Several major factors are pushing fuel costs upward and contributing to the elevated Gas Prices September 2026 seen across the country.

Global instability — Ongoing conflict in the Middle East has pushed crude oil above $100 per barrel, directly influencing Gas Prices September 2026. Crude oil remains the largest component of gasoline pricing, so any disruption in global supply immediately affects U.S. consumers.
Refining bottlenecks — Seasonal maintenance and limited West Coast refining capacity continue to elevate prices, especially in states with strict fuel standards. These bottlenecks reduce output and create regional shortages, further increasing Gas Prices September 2026.
Record diesel prices — Diesel averaging above $6.20 per gallon is raising freight and agricultural costs, indirectly affecting gasoline markets. Higher transportation costs ripple through the economy, adding pressure to Gas Prices September 2026.

As of September 4–15, 2026, the national average for regular gasoline ranges from $4.15 to $4.329, reinforcing how Gas Prices September 2026 remain historically elevated and show no signs of immediate relief.

Most Expensive States in September 2026

TThe states with the highest Gas Prices September 2026 include:

California — $5.81 to $6.02
Washington — $5.48 to $5.57
Hawaii — $5.42 to $5.44
Oregon — $5.00 to $5.12
Nevada — $4.95 to $5.12

These states share high fuel taxes, strict environmental standards, and limited refining capacity. California, for example, has the highest fuel taxes in the nation and requires specialized fuel blends that are more expensive to produce. These combined factors contribute to the elevated Gas Prices September 2026 seen throughout the West Coast.

Least Expensive States in September 2026

Meanwhile, several states continue to benefit from lower Gas Prices September 2026, largely due to lower taxes, fewer environmental restrictions, and proximity to major refineries:

Indiana — $3.45 to $3.59 (lowest in the nation)
Texas — $3.69 to $3.86
Oklahoma — $3.71 to $3.96
Mississippi — $3.73 to $3.87
Louisiana — $3.77 to $3.90

These regions demonstrate how geography and policy play a major role in shaping Gas Prices September 2026. States near the Gulf Coast benefit from abundant refining capacity and lower transportation costs, keeping prices more affordable for drivers.

State-by-State Gas Price Summary (September 2026)

$6.00+ per gallon

California: $5.81–$6.02

$5.40–$5.60 per gallon

Washington: $5.48–$5.57
Hawaii: $5.42–$5.44

$5.00–$5.40 per gallon

Oregon: $5.00–$5.12
Alaska: $5.00–$5.07
Nevada: $4.95–$5.12
Idaho: $4.62–$4.83
Arizona: $4.53–$4.58
Utah: $4.42–$4.79
Montana: $4.38–$4.50

$4.15–$4.40 per gallon

Pennsylvania: $4.50
Illinois: $4.53
New York: $4.41–$4.43
Massachusetts: $4.35–$4.36
Colorado: $4.24–$4.30
New Jersey: $4.25–$4.42
Michigan: $4.26–$4.44
Minnesota: $3.95–$4.23
Maryland: $4.20
Virginia: $4.15
North Dakota: $4.18
South Dakota: $4.16
Ohio: $3.79–$4.14
Florida: $3.82–$4.12

$3.70–$4.00 per gallon

Kentucky: $3.86–$3.99
Missouri: $3.97
Kansas: $3.78–$3.96
Oklahoma: $3.71–$3.96
Arkansas: $3.78–$3.95
Alabama: $3.80–$3.92
Tennessee: $3.83–$3.93
South Carolina: $3.77–$3.92
Louisiana: $3.77–$3.90
Mississippi: $3.73–$3.87

Below $3.70 per gallon

Texas: $3.69–$3.86
Indiana: $3.45–$3.59

Conclusion: What Drivers Should Expect

Gas Prices September 2026 remain historically high, with national averages above $4.15 and some states exceeding $6.00. The gap between states is driven by taxes, environmental regulations, and refining logistics. With global conflict ongoing and diesel prices hitting record highs, analysts expect continued volatility heading into October. Drivers should prepare for the possibility that Gas Prices September 2026 may remain elevated or even rise further depending on global supply conditions. For now, the best strategy is staying informed, monitoring local price trends, and planning travel with fuel costs in mind.