How much is propane in Washington?
$2.55 a gallon on average across the 2025 to 2026 heating season, in the weekly survey the EIA runs from October to March.
Propane prices in Washington
26 weeks surveyed, from a low of $2.42 to a high of $2.68. The last week, ending Mar 30, 2026, came in at $2.67, 5 percent above the season's own average.
EIA publishes no propane price for Washington or its region, so this is the national average, which is the closest published number there is.
The EIA is surveying now. A new residential price lands each Monday through March, and the newest week surveyed ends Mar 30, 2026.
Same EIA regionAlaska, Arizona, California, Hawaii, Nevada, Oregon
Propane prices in Washington, winter by winter
Each winter is one point: the average of the weeks surveyed, with the band behind it showing how far the price travelled inside that season. The band is usually the more useful half of the picture, because a household buying in November and a household buying in February are not paying the same winter's price. The 2025 to 2026 season came out 9th cheapest of the 12 on record here.
When is propane cheapest in Washington?
Across the 5 heating seasons on record here, October has averaged the cheapest month and February the dearest, a spread of 27 cents a gallon. That is an average of real weeks rather than a forecast: a cold snap or a move in the distillate market can turn any single winter the other way, and a tank that runs dry in January does not get to wait for October.
Is propane cheaper than heating oil in Washington?
Per gallon the two prices are not comparable, because a gallon of propane carries about two thirds the heat of a gallon of heating oil. Converted to what a million Btu costs, on each fuel's 2025 to 2026 season average in Washington:
| Fuel | A gallon | Btu in a gallon | Per million Btu |
|---|---|---|---|
| Heating oilCheaper heat | $3.74 | 138,500 | $26.99 |
| Propane | $2.55 | 91,452 | $27.89 |
Propane is the lower number a gallon and the dearer heat: a gallon of it carries about two thirds the energy. Heating oil came out 3 percent cheaper per unit of heat, a gap of $0.90 per million Btu. Conversion factors from the British thermal units, U.S. Energy Information Administration.
Appliance efficiency is the piece this does not cover, and it can be worth more than the price gap: the same gallon in a newer burner buys more heat. Switching fuels means new equipment, so for most households this is a comparison of what they are already paying rather than a decision to make this winter.
Heating oil in Washington$3.74 a gallon across the 2025 to 2026 season.National price
How much propane Washington homes burn
Washington households burned 96 million gallons of propane in 2024, 17th of the 50 states that burn any. That is 50 percent up on 2015, 9 years earlier. Consumption is the half of this story a price cannot tell: it is what decides whether a state has a dealer on every road or one that drives an hour.
Washington heating fuel questions
More of the heating season in Washington
Heating fuel prices in every state
Prices from the State Heating Oil and Propane Program, U.S. Energy Information Administration (propane series), compiled 2026-09-22; the newest week shown ends Mar 30, 2026. Household consumption from the State Energy Data System, U.S. Energy Information Administration, 2024. The EIA figure is a residential price averaged across dealers in the survey area, so an individual quote, a pre buy contract or a delivery minimum will read differently. Every state is in the heating fuel prices by state table.