Montana propane prices per gallon this week
Montana propane averaged $2.168 a gallon in the EIA survey of October 19, 2026.
Propane, Montana, week of October 19, 2026
$2.168/gal
| 150 gallons at this price | $325 |
| Change from the week before | +$0.027 |
| Same week a year ago | $1.875 (+15.6 %) |
| Average of last winter (2025-26, November to March) | $2.052 |
| U.S. average | $2.689 |
EIA weekly survey of October 19, 2026, excluding taxes. Next release October 28, 2026.
Compiled by Radif Partners · Where the prices come from · EIA survey of , published October 21, 2026, excluding taxes
Montana has the highest share of propane-heated homes in the West of the federal survey: the Census Bureau's 2024 count is 64,068, 13.7 % of occupied homes, ranking the state 5th of 38 on that measure. Wood heats another 27,265. The winter is long: 5,562 heating degree days from November to March in a normal year and 7,853 over the whole year. In the EIA's weekly survey of October 19, 2026, Montana propane averaged $2.168 a gallon, 30th of 38 states counting from the dearest and $0.521 below the national average. With no western propane outlook from the EIA, this site scales the national average home to Montana's weather: about 872 gallons for the winter, $1,890 at this week's price. Last winter the state averaged $2.052. Heating oil is not surveyed here. Prices exclude taxes and delivery fees.
The gallons a Montana winter takes
Montana's normal January counts 1,276 heating degree days, its December 1,301 and its February 1,067; October and April add 637 and 653. By the same scaling as the season estimate, the average propane home burns about 404 gallons over December and January. A 500-gallon tank filled to 80 % holds 400 gallons, so a household on will-call delivery should watch the gauge closely through midwinter. The days-left calculator turns a reading into a date.
Days left in a Montana tank
Days your propane lasts in Montana from early January
39 days
| January: 200 gallons burned | 50 gallons left |
| February: 50 gallons burned | reserve reached |
The Montana price
The EIA does not publish a wholesale propane price for Montana. The Rocky Mountain region's wholesale figure, $1.187, shows roughly how much of the $2.168 residential average is added after the terminal. Last winter the Montana average ran from $1.840 to $2.199; the cheapest winter on file is 2015-16, at $1.568, and the record week $2.514, on March 14, 2022.
This week Montana propane is $0.517 dearer than North Dakota's average, $0.298 dearer than South Dakota's, $0.418 cheaper than Idaho's and $0.172 cheaper than the Rocky Mountain regional average. A 1,000-gallon tank filled from 20 % to 80 % takes 600 gallons, $1,301 at the Montana average; the propane tank calculator handles any size.
Locks, budget and help
Since 2014-15, the Montana winter average finished above the mid-October price in 12 of 12 seasons, with a median change of 11.8 %. With 872 gallons in a season, each ten cents a gallon is worth $87. The lock-in check replays every winter against a pre-buy price, and the winter budget spreads the cost month by month and accepts your own gallons, useful in a home that also burns wood. Per million Btu at the ENERGY STAR furnace rating, Montana propane heat costs $26 this week. The federal LIHEAP ceiling for four people in Montana is $69,463 a year; the LIHEAP page gives every household size.
What a delivery costs in Montana at this week's average
| Fuel | Price a gallon | Order | Order | Order | Order |
|---|---|---|---|---|---|
| Propane | $2.168 | 100 gal: $217 | 250 gal: $542 | 400 gal: $867 | 800 gal: $1,734 |
Propane in Montana, winter by winter
| Winter | Mid-October | November to March average | Season high |
|---|---|---|---|
| 2026-27 | $2.141 | in progress | $2.168 (October 19, 2026) |
| 2025-26 | $1.873 | $2.052 | $2.199 (March 16, 2026) |
| 2024-25 | $1.882 | $2.217 | $2.382 (March 3, 2025) |
| 2023-24 | $1.913 | $2.132 | $2.225 (February 5, 2024) |
| 2022-23 | $2.335 | $2.383 | $2.462 (March 6, 2023) |
| 2021-22 | $2.116 | $2.337 | $2.514 (March 14, 2022) |
| 2020-21 | $1.391 | $1.697 | $2.085 (March 1, 2021) |
| 2019-20 | $1.412 | $1.645 | $1.683 (January 6, 2020) |
| 2018-19 | $1.750 | $1.925 | $1.986 (March 25, 2019) |
| 2017-18 | $1.759 | $1.973 | $2.073 (January 29, 2018) |
| 2016-17 | $1.815 | $2.039 | $2.388 (February 6, 2017) |
| 2015-16 | $1.526 | $1.568 | $1.629 (February 15, 2016) |
| 2014-15 | $1.720 | $1.966 | $2.107 (December 22, 2014) |