Propane prices in Montana this week
Propane in Montana averaged $2.28 a gallon in the week of Nov 2, 2026, up 10.1¢ from the week before. That is $0.54 below the US average of $2.82, and 20% higher than a year ago ($1.90).
Propane price in Montana since Sep 9, 2024
Weekly from October to March; monthly in spring and summer. Dollars per gallon, excluding taxes.
How Montana compares
Montana ranks #30 of 38 surveyed states for propane prices this week (1 = most expensive). See every state.
Frequently asked questions
How much is propane in Montana right now?
The average residential propane price in Montana was $2.28 per gallon in the week of Nov 2, 2026, excluding taxes, according to the US Energy Information Administration's weekly survey.
How much does it cost to fill a propane tank in Montana?
A 500-gallon tank is filled to 80%, so a fill from 20% is about 300 gallons. At $2.28 a gallon that is about $684 before taxes and delivery fees.
Is propane more expensive than last year in Montana?
Yes. A year ago the average was $1.90, so prices are 20% higher now.
Source: US Energy Information Administration, Heating Oil and Propane Update, residential prices excluding taxes. Your dealer's price will differ with volume, contract type and delivery area. Updated Nov 2, 2026.