National Weather ServiceIdahoWinter Weather AdvisoryArchive to October 1, 2026
Winter Weather Advisories in Idaho
The National Weather Service issued 93 winter weather advisories for Idaho in 2025 and 114 a year on average in 2008-2025; in 2021-2025 it had the 5th most of any state. 2026 through September: 41, 40% below the average of 69 for those months in 2008-2025. Southern Clearwater Mountains was covered most often (533 times since 2008).
How many winter weather advisories does Idaho get?
Every winter weather advisory that covered part of Idaho. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 41 |
| 2025 | 93 |
| 2024 | 125 |
| 2023 | 129 |
| 2022 | 146 |
| 2021 | 126 |
| 2020 | 115 |
| 2019 | 125 |
| 2018 | 126 |
| 2017 | 134 |
| 2016 | 125 |
| 2015 | 110 |
| 2014 | 121 |
| 2013 | 95 |
| 2012 | 100 |
| 2011 | 109 |
| 2010 | 125 |
| 2009 | 102 |
| 2008 | 40 |
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 Idaho 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 Idaho?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Southern Clearwater Mountains | 533 | 106 | May 17, 2026 |
| Eastern Lemhi County | 430 | 76 | April 23, 2026 |
| Northern Clearwater Mountains | 410 | 69 | May 17, 2026 |
| Orofino/Grangeville Region | 338 | 46 | February 24, 2026 |
| Lower Hells Canyon/Salmon River Region | 316 | 45 | February 17, 2026 |
| Central Panhandle Mountains | 304 | 61 | April 15, 2026 |
| Western Lemhi County | 268 | 64 | April 23, 2026 |
| Coeur d'Alene Area | 214 | 45 | March 13, 2026 |
| Lewis and Southern Nez Perce Counties | 213 | 32 | March 13, 2026 |
| Northern Panhandle | 207 | 35 | February 19, 2026 |
| Idaho Palouse | 197 | 40 | March 13, 2026 |
| Upper Snake River Plain | 172 | 30 | December 5, 2025 |
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 winter weather advisory?
A winter weather advisory covers snow, sleet or freezing rain that will be a nuisance and can make roads slippery, below warning amounts. 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 Idaho.