National Weather ServiceOregonHeat AdvisoryArchive to October 1, 2026
Heat Advisories in Oregon
The National Weather Service issued 27 heat advisories for Oregon in 2025 and 12 a year on average in 2008-2025; in 2021-2025 it had the 27th most of any state. 2026 through September: 22, 79% above the average of 12 for those months in 2008-2025. Greater Portland Metro Area was covered most often (48 times since 2008).
How many heat advisories does Oregon get?
Every heat advisory that covered part of Oregon. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 22 |
| 2025 | 27 |
| 2024 | 21 |
| 2023 | 14 |
| 2022 | 25 |
| 2021 | 18 |
| 2020 | 16 |
| 2019 | 6 |
| 2018 | 13 |
| 2017 | 16 |
| 2016 | 8 |
| 2015 | 15 |
| 2014 | 8 |
| 2013 | 7 |
| 2012 | 5 |
| 2011 | 3 |
| 2010 | 6 |
| 2009 | 7 |
| 2008 | 6 |
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 Oregon 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 Oregon?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Greater Portland Metro Area | 48 | 3 | July 14, 2023 |
| South Willamette Valley | 48 | 3 | July 14, 2023 |
| Central Willamette Valley | 47 | 3 | July 14, 2023 |
| Eastern Curry County and Josephine County | 47 | 13 | August 4, 2026 |
| Upper Hood River Valley | 47 | 13 | July 21, 2026 |
| Lower Columbia Basin of Oregon | 46 | 15 | August 20, 2026 |
| Northern Oregon Cascade Foothills | 45 | 3 | July 14, 2023 |
| Cascade Foothills in Lane County | 44 | 3 | July 14, 2023 |
| Jackson County | 44 | 13 | August 4, 2026 |
| Western Columbia River Gorge | 44 | 2 | July 14, 2023 |
| Lower Columbia | 43 | 3 | August 13, 2023 |
| Foothills of the Northern Blue Mountains of Oregon | 39 | 15 | August 20, 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 Oregon.