National Weather ServiceMaineHeat AdvisoryArchive to October 1, 2026
Heat Advisories in Maine
The National Weather Service issued 11 heat advisories for Maine in 2025 and 5 a year on average in 2008-2025; in 2021-2025 it had the 41st most of any state. 2026 through September: 9, 76% above the average of 5 for those months in 2008-2025. Interior York was covered most often (58 times since 2008).
How many heat advisories does Maine get?
Every heat advisory that covered part of Maine. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 9 |
| 2025 | 11 |
| 2024 | 15 |
| 2023 | 6 |
| 2022 | 7 |
| 2021 | 14 |
| 2020 | 9 |
| 2019 | 3 |
| 2018 | 13 |
| 2017 | 1 |
| 2016 | 2 |
| 2015 | 0 |
| 2014 | 0 |
| 2013 | 2 |
| 2012 | 2 |
| 2011 | 3 |
| 2010 | 4 |
| 2009 | 0 |
| 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 Maine 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 Maine?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Interior York | 58 | 20 | August 7, 2026 |
| Coastal York | 46 | 16 | August 7, 2026 |
| Coastal Cumberland | 38 | 14 | August 7, 2026 |
| Kennebec | 36 | 12 | August 7, 2026 |
| Androscoggin | 34 | 12 | August 7, 2026 |
| Southern Oxford | 34 | 12 | July 14, 2026 |
| Southern Penobscot | 32 | 12 | August 7, 2026 |
| Central Interior Cumberland | 31 | 17 | August 7, 2026 |
| Southern Somerset | 29 | 10 | August 7, 2026 |
| Interior Waldo | 28 | 9 | August 7, 2026 |
| Central Penobscot | 27 | 9 | August 7, 2026 |
| Southern Franklin | 27 | 8 | July 14, 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 Maine.