National Weather ServiceSouth DakotaHeat AdvisoryArchive to October 1, 2026
Heat Advisories in South Dakota
The National Weather Service issued 32 heat advisories for South Dakota in 2025 and 14 a year on average in 2008-2025; in 2021-2025 it had the 23rd most of any state. 2026 through September: 19, 37% above the average of 14 for those months in 2008-2025. Yankton was covered most often (88 times since 2008).
How many heat advisories does South Dakota get?
Every heat advisory that covered part of South Dakota. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 19 |
| 2025 | 32 |
| 2024 | 21 |
| 2023 | 22 |
| 2022 | 28 |
| 2021 | 15 |
| 2020 | 18 |
| 2019 | 19 |
| 2018 | 13 |
| 2017 | 12 |
| 2016 | 18 |
| 2015 | 6 |
| 2014 | 3 |
| 2013 | 15 |
| 2012 | 16 |
| 2011 | 7 |
| 2010 | 3 |
| 2009 | 1 |
| 2008 | 0 |
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
When in the year does South Dakota get them?
Sum of 2008-2025; the busiest month is labelled.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
Where in South Dakota?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Yankton | 88 | 25 | September 4, 2026 |
| Hutchinson | 87 | 27 | September 4, 2026 |
| Bon Homme | 86 | 26 | September 4, 2026 |
| Clay | 85 | 24 | September 4, 2026 |
| Charles Mix | 84 | 26 | September 4, 2026 |
| Douglas | 84 | 25 | September 4, 2026 |
| Lyman | 84 | 33 | July 29, 2026 |
| Turner | 82 | 24 | September 4, 2026 |
| Hanson | 81 | 24 | July 25, 2026 |
| Union | 81 | 23 | September 4, 2026 |
| Buffalo | 80 | 29 | July 29, 2026 |
| Davison | 79 | 21 | July 25, 2026 |
The NWS issues these products for counties or forecast zones; a zone can be part of a county or a mountain range.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
What is a heat advisory?
A heat advisory means heat that can make people ill, especially those without cooling, below the office's extreme heat warning values. An advisory is issued for a hazard less serious than a warning that can still cause inconvenience or danger if people are not careful. The national record · Every warning type in South Dakota.