National Weather ServiceWashingtonFreezing Fog AdvisoryArchive to October 1, 2026
Freezing Fog Advisories in Washington
The National Weather Service issued 9 freezing fog advisories for Washington in 2025 and 8 a year on average in 2008-2025; in 2021-2025 it had the 2nd most of any state. 2026 through September: 8, 144% above the average of 3 for those months in 2008-2025. Foothills of the Blue Mountains of Washington was covered most often (76 times since 2008).
How many freezing fog advisories does Washington get?
Every freezing fog advisory that covered part of Washington. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 8 |
| 2025 | 9 |
| 2024 | 11 |
| 2023 | 13 |
| 2022 | 27 |
| 2021 | 4 |
| 2020 | 10 |
| 2019 | 9 |
| 2018 | 0 |
| 2017 | 14 |
| 2016 | 2 |
| 2015 | 4 |
| 2014 | 3 |
| 2013 | 5 |
| 2012 | 13 |
| 2011 | 8 |
| 2010 | 7 |
| 2009 | 7 |
| 2008 | 3 |
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 |
|---|---|---|---|
| Foothills of the Blue Mountains of Washington | 76 | 15 | January 15, 2026 |
| Kittitas Valley | 66 | 23 | January 16, 2026 |
| Lower Columbia Basin of Washington | 58 | 13 | January 1, 2026 |
| Yakima Valley | 53 | 13 | January 16, 2026 |
| Simcoe Highlands | 21 | 3 | January 4, 2025 |
| Eastern Columbia River Gorge of Washington | 13 | 3 | January 26, 2024 |
| Foothills of the Blue Mountains | 13 | 0 | December 25, 2010 |
| Lower Columbia Basin | 8 | 0 | December 25, 2010 |
| Greater Vancouver Area | 6 | 0 | February 18, 2019 |
| Lower Columbia and I - 5 Corridor in Cowlitz County | 5 | 0 | November 13, 2022 |
| Southwest Interior | 5 | 2 | November 29, 2023 |
| Tacoma Area | 4 | 2 | November 29, 2023 |
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 freezing fog advisory?
A freezing fog advisory means fog will freeze on roads, bridges and other surfaces, making them slippery while it cuts visibility. 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.