National Weather ServiceWyomingFrost AdvisoryArchive to October 1, 2026
Frost Advisories in Wyoming
The National Weather Service issued 4 frost advisories for Wyoming in 2025 and 4 a year on average in 2008-2025; in 2021-2025 it had the 42nd most of any state. 2026 through September: 3, 15% above the average of 3 for those months in 2008-2025. Southern Campbell was covered most often (20 times since 2008).
How many frost advisories does Wyoming get?
Every frost advisory that covered part of Wyoming. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 3 |
| 2025 | 4 |
| 2024 | 6 |
| 2023 | 4 |
| 2022 | 4 |
| 2021 | 3 |
| 2020 | 0 |
| 2019 | 4 |
| 2018 | 4 |
| 2017 | 8 |
| 2016 | 3 |
| 2015 | 3 |
| 2014 | 2 |
| 2013 | 3 |
| 2012 | 1 |
| 2011 | 4 |
| 2010 | 4 |
| 2009 | 3 |
| 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 Wyoming 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 Wyoming?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Southern Campbell | 20 | 4 | May 10, 2026 |
| Western Crook | 20 | 4 | May 10, 2026 |
| Weston | 16 | 0 | May 24, 2022 |
| Laramie Valley | 14 | 1 | October 4, 2024 |
| Northeastern Crook | 14 | 4 | May 10, 2026 |
| East Laramie County | 13 | 2 | October 13, 2025 |
| Goshen County | 13 | 4 | October 13, 2025 |
| Niobrara County | 13 | 3 | May 20, 2026 |
| Central Laramie County | 12 | 2 | October 13, 2025 |
| Central Carbon County | 11 | 1 | September 24, 2023 |
| Converse County Lower Elevations | 11 | 2 | September 22, 2024 |
| East Platte County | 11 | 3 | May 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 frost advisory?
A frost advisory means frost is expected on clear, calm nights during the growing season, with temperatures a few degrees above freezing. 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 Wyoming.