Eureka Average Gas Price
| Regular | Mid-Grade | Premium | Diesel | E85 | |
|---|---|---|---|---|---|
| Week Ago Avg. | $4.32 | $4.87 | $5.31 | $5.12 | - |
| Month Ago Avg. | $4.32 | $4.87 | $5.31 | $5.12 | - |
Highest Recorded Average Gas Price In Eureka Year to Date
| Price | Date | |
|---|---|---|
| Diesel | $5.12 | 06/15/26 |
| Regular | $4.32 | 06/15/26 |
Top 10 Gas Stations & Cheap Fuel Prices in Eureka
Exxon in Eureka (10 Dewey Ave)
10 Dewey Ave, Eureka, Montana,
$4.58
Jul 18, 2026
0¢ Cashback
Exxon in Eureka (10 Dewey Ave)
10 Dewey AveEurekaMontana59917USA
Exxon in Eureka (1835 US-93 N)
1835 US-93 N, Eureka, Montana,
$4.89
Jul 18, 2026
0¢ Cashback
Exxon in Eureka (1835 US-93 N)
1835 US-93 NEurekaMontana59917USA
Conoco in Eureka (1000 US-93 )
1000 US-93 , Eureka, Montana,
$5.59
Jul 18, 2026
0¢ Cashback
Conoco in Eureka (1000 US-93 )
1000 US-93 EurekaMontana59917USA
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Gas Data Methodology
The fuel prices published in this guide are based on the results of research completed by Way.com’s data team. Using a mix of external and internal data, we analyzed millions of prices across U.S. ZIP codes and globally.