South Dakota propane prices per gallon this week
South Dakota propane averaged $1.870 a gallon in the EIA survey of October 19, 2026.
Propane, South Dakota, week of October 19, 2026
$1.870/gal
| 150 gallons at this price | $281 |
| Change from the week before | +$0.046 |
| Same week a year ago | $1.654 (+13.1 %) |
| Average of last winter (2025-26, November to March) | $1.814 |
| Wholesale price the same week | $1.179 (dealer spread $0.691) |
| 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
South Dakota has the highest share of propane-heated homes outside northern New England: the Census Bureau's 2024 survey counts 60,144 of them, 15.7 % of occupied homes, ranking the state 4th of the 38 surveyed on that measure. In the EIA's weekly survey of October 19, 2026, South Dakota propane averaged $1.870 a gallon, 13 % more than a year earlier, 35th of 38 states from the dearest. Its winter is long, 5,859 heating degree days from November to March in a normal year, so the EIA's average Midwest propane home would burn about 782 gallons over the season, $1,463 at this week's average. Last winter the state averaged $1.814 a gallon. The EIA does not survey heating oil in South Dakota. All prices exclude taxes and delivery fees.
Price and margin
The EIA's wholesale propane price for South Dakota is $1.179 this week. The residential average sits $0.691 above it, about 37 % of what a household pays, for delivery, storage, the tank and the dealer. Last winter the residential price ran from $1.638 to $1.864. The record week on file is $4.107, on January 27, 2014.
A South Dakota pre-buy price
Locking 800 gallons of propane at $1.870
Saves $0
| Break-even winter price | $1.870 |
| Past winters where the November-March average beat the mid-October price | 11 of 13 |
| Median change, mid-October to winter average | +8.6 % |
| Past winters, replayed from today's price, that end above $1.870 | 11 of 13 |
Locking a price
Since 2013-14, the South Dakota winter average ended above the mid-October price in 11 of 13 seasons, with a median change of 8.6 %. With a season of 782 gallons for the average home, each ten cents a gallon is worth $78. The lock-in check runs your dealer's offer against each past winter.
South Dakota and its neighbors
This week South Dakota propane is $0.219 dearer than North Dakota's average, $0.144 cheaper than Minnesota's, $0.087 dearer than Nebraska's and $0.166 dearer than Iowa's. Filling a 500-gallon tank from 30 % to 80 % costs $468 at the state average, and a 1,000-gallon tank from 20 % $1,122.
The months that count
NOAA's normals give South Dakota 1,359 heating degree days in December, 1,419 in January and 1,162 in February. October and April add 527 and 568. The days-left calculator works for propane and uses these monthly normals to turn a gauge reading into a date, and the winter budget spreads the season's cost month by month. Per million Btu at the ENERGY STAR furnace rating, South Dakota propane heat costs $23 this week; the comparison page adds electricity. The federal LIHEAP ceiling for four people in South Dakota is $70,801 a year, and $36,816 for a person living alone; the LIHEAP page explains how the federal rule sets these figures.
What a delivery costs in South Dakota at this week's average
| Fuel | Price a gallon | Order | Order | Order | Order |
|---|---|---|---|---|---|
| Propane | $1.870 | 100 gal: $187 | 250 gal: $468 | 400 gal: $748 | 800 gal: $1,496 |
Propane in South Dakota, winter by winter
| Winter | Mid-October | November to March average | Season high |
|---|---|---|---|
| 2026-27 | $1.824 | in progress | $1.870 (October 19, 2026) |
| 2025-26 | $1.653 | $1.814 | $1.864 (February 9, 2026) |
| 2024-25 | $1.726 | $1.903 | $2.010 (March 3, 2025) |
| 2023-24 | $1.719 | $1.798 | $1.884 (February 26, 2024) |
| 2022-23 | $2.114 | $2.107 | $2.149 (March 20, 2023) |
| 2021-22 | $2.177 | $2.236 | $2.405 (March 14, 2022) |
| 2020-21 | $1.241 | $1.578 | $2.108 (March 1, 2021) |
| 2019-20 | $1.264 | $1.422 | $1.491 (December 2, 2019) |
| 2018-19 | $1.455 | $1.491 | $1.501 (December 10, 2018) |
| 2017-18 | $1.461 | $1.587 | $1.635 (January 22, 2018) |
| 2016-17 | $1.084 | $1.328 | $1.478 (February 13, 2017) |
| 2015-16 | $1.046 | $1.068 | $1.077 (December 21, 2015) |
| 2014-15 | $1.666 | $1.589 | $1.679 (November 17, 2014) |
| 2013-14 | $1.577 | $2.393 | $4.107 (January 27, 2014) |