National Weather ServiceWashingtonHeat AdvisoryArchive to October 1, 2026
Heat Advisories in Washington
The National Weather Service issued 28 heat advisories for Washington in 2025 and 12 a year on average in 2008-2025; in 2021-2025 it had the 26th most of any state. 2026 through September: 19, 53% above the average of 12 for those months in 2008-2025. South Washington Cascade Foothills was covered most often (53 times since 2008).
How many heat advisories does Washington get?
Every heat advisory that covered part of Washington. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 19 |
| 2025 | 28 |
| 2024 | 23 |
| 2023 | 13 |
| 2022 | 26 |
| 2021 | 17 |
| 2020 | 10 |
| 2019 | 5 |
| 2018 | 12 |
| 2017 | 15 |
| 2016 | 7 |
| 2015 | 18 |
| 2014 | 10 |
| 2013 | 5 |
| 2012 | 7 |
| 2011 | 3 |
| 2010 | 8 |
| 2009 | 9 |
| 2008 | 7 |
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 Washington 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 Washington?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| South Washington Cascade Foothills | 53 | 12 | August 4, 2026 |
| Yakima Valley | 52 | 17 | August 20, 2026 |
| Greater Vancouver Area | 48 | 3 | July 15, 2023 |
| Lower Columbia Basin of Washington | 45 | 15 | August 20, 2026 |
| Western Columbia River Gorge | 44 | 2 | July 15, 2023 |
| Lower Columbia and I - 5 Corridor in Cowlitz County | 43 | 3 | August 13, 2023 |
| Foothills of the Blue Mountains of Washington | 42 | 16 | August 20, 2026 |
| Lower Garfield and Asotin Counties | 40 | 18 | August 25, 2026 |
| Eastern Columbia River Gorge of Washington | 38 | 15 | August 20, 2026 |
| Kittitas Valley | 38 | 14 | August 20, 2026 |
| Moses Lake Area | 37 | 16 | August 21, 2026 |
| Okanogan Valley | 35 | 15 | August 21, 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 Washington.