Federal Energy Regulatory Commission (FERC) Commissioner Mark C. Christie - www.ferc.gov

Cheapest midgrade gas in Washington County at $3.37 per gallon in week ending Dec. 20, 2025

Drivers in Washington County reported a weekly low of $3.37 per gallon for midgrade gas in the week ending Dec. 20, 2025.

Federal Energy Regulatory Commission (FERC) Commissioner Mark C. Christie - www.ferc.gov

Cheapest regular gas in Valley County reach $3.25 in week ending Dec. 20, 2025

For the week ending Dec. 20, 2025, the lowest reported price of regular gas in Valley County stood at $3.25 per gallon.

Federal Energy Regulatory Commission (FERC) Commissioner Mark C. Christie - www.ferc.gov

Cheapest regular gas in Custer County reach $3.09 in week ending Dec. 20, 2025

For the week ending Dec. 20, 2025, the lowest reported price of regular gas in Custer County stood at $3.09 per gallon.

Federal Energy Regulatory Commission (FERC) Commissioner Allison Clements - www.ferc.gov

Lowest premium gas price in Washington County hits $3.57 for week ending Dec. 20, 2025

For the week ending Dec. 20, 2025, the lowest reported price of premium gas in Washington County stood at $3.57 per gallon.

Federal Energy Regulatory Commission (FERC) Commissioner Allison Clements - www.ferc.gov

Lowest diesel gas price in Adams County hits $3.80 for week ending Dec. 20, 2025

The lowest price of diesel gas in cities throughout Adams County was found at a single gas station in the week ending Dec. 20, 2025, according to customer reports submitted to GasBuddy.

Federal Energy Regulatory Commission (FERC) Commissioner Allison Clements - www.ferc.gov

Lowest price for premium gas in Valley County at $3.65 in week ending Dec. 20, 2025

The lowest price for a gallon of premium gas in Valley County during the week ending Dec. 20, 2025 was $3.65, according to customer reports to GasBuddy.

Federal Energy Regulatory Commission (FERC) Chairman Willie L. Phillips - www.ferc.gov

Where were the cheapest places to fill up on regular gas in cities in Butte County in week ending Dec. 20, 2025?

In Butte County, the week’s lowest regular gas price was $3.05 per gallon as of the week ending Dec. 20, 2025.

Federal Energy Regulatory Commission (FERC) Chairman Willie L. Phillips - www.ferc.gov

Drivers in Valley County see lowest midgrade gas at $3.45 in week ending Dec. 20, 2025

The cheapest per-gallon price for midgrade gas in Valley County during the week ending Dec. 20, 2025 was $3.45 per gallon.

Federal Energy Regulatory Commission (FERC) Chairman Willie L. Phillips - www.ferc.gov

Lowest price for diesel gas in Butte County at $3.65 in week ending Dec. 20, 2025

The lowest price for a gallon of diesel gas in Butte County during the week ending Dec. 20, 2025 was $3.65, according to customer reports to GasBuddy.

Federal Energy Regulatory Commission (FERC) Chairman Willie L. Phillips - www.ferc.gov

Cheapest premium gas in cities across Lemhi County in week ending Dec. 20, 2025

The cheapest reported price for a gallon of premium gas in Lemhi County came in at $3.73 during the week ending Dec. 20, 2025.

Federal Energy Regulatory Commission (FERC) Commissioner Allison Clements - www.ferc.gov

Washington County sees lowest price for regular gas at $3.13 in week ending Dec. 20, 2025

The week’s cheapest regular gas price in Washington County stood at $3.13 per gallon in the week ending Dec. 20, 2025.

Federal Energy Regulatory Commission (FERC) Commissioner Allison Clements - www.ferc.gov

Valley County sees lowest price for diesel gas at $3.70 in week ending Dec. 20, 2025

Drivers in Valley County reported a weekly low of $3.70 per gallon for diesel gas in the week ending Dec. 20, 2025.

Federal Energy Regulatory Commission (FERC) Chairman Willie L. Phillips - www.ferc.gov

Week ending Dec. 20, 2025: Lowest midgrade gas in Custer County reaches $3.39

In Custer County, the week’s lowest midgrade gas price was $3.39 per gallon as of the week ending Dec. 20, 2025.

Federal Energy Regulatory Commission (FERC) Chairman Willie L. Phillips - www.ferc.gov

Butte County’s lowest diesel gas price recorded at $3.79 for week ending Dec. 13 2025

The lowest price for a gallon of diesel gas in Butte County during the week ending Dec. 13 2025 was $3.79, according to customer reports to GasBuddy.

Federal Energy Regulatory Commission (FERC) Commissioner Mark C. Christie - www.ferc.gov

Lowest price for premium gas in Custer County at $3.69 in week ending Dec. 13 2025

The week’s cheapest premium gas price in Custer County stood at $3.69 per gallon in the week ending Dec. 13 2025.

Federal Energy Regulatory Commission (FERC) Commissioner Mark C. Christie - www.ferc.gov

Washington County sees lowest price for regular gas at $3.21 in week ending Dec. 13 2025

The week’s cheapest regular gas price in Washington County stood at $3.21 per gallon in the week ending Dec. 13 2025.

Federal Energy Regulatory Commission (FERC) Chairman Willie L. Phillips - www.ferc.gov

Camas County sees lowest price for premium gas at $3.99 in week ending Dec. 13 2025

The week’s cheapest premium gas price in Camas County stood at $3.99 per gallon in the week ending Dec. 13 2025.

Federal Energy Regulatory Commission (FERC) Commissioner Mark C. Christie - www.ferc.gov

Lowest price for midgrade gas in Lemhi County at $3.33 in week ending Dec. 13 2025

In Lemhi County, the week’s lowest midgrade gas price was $3.33 per gallon as of the week ending Dec. 13 2025.

Federal Energy Regulatory Commission (FERC) Commissioner Allison Clements - www.ferc.gov

Lowest regular gas price in Camas County available at $3.04 per gallon in week ending Dec. 13 2025

The cheapest reported price for a gallon of regular gas in Camas County came in at $3.04 during the week ending Dec. 13 2025.

Federal Energy Regulatory Commission (FERC) Commissioner Mark C. Christie - www.ferc.gov

Valley County saw lowest price for premium gas at $3.72 in week ending Dec. 13 2025

The cheapest reported price for a gallon of premium gas in Valley County came in at $3.72 during the week ending Dec. 13 2025.

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