National Weather ServiceWyomingWinter Storm WarningArchive to October 1, 2026
Winter Storm Warnings in Wyoming
The National Weather Service issued 39 winter storm warnings for Wyoming in 2025 and 49 a year on average in 2008-2025; in 2021-2025 it had the 3rd most of any state. 2026 through September: 17, 48% below the average of 33 for those months in 2008-2025. Snowy Range was covered most often (227 times since 2008).
How many winter storm warnings does Wyoming get?
Every winter storm warning that covered part of Wyoming. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 17 |
| 2025 | 39 |
| 2024 | 63 |
| 2023 | 51 |
| 2022 | 47 |
| 2021 | 46 |
| 2020 | 46 |
| 2019 | 59 |
| 2018 | 56 |
| 2017 | 63 |
| 2016 | 49 |
| 2015 | 34 |
| 2014 | 55 |
| 2013 | 44 |
| 2012 | 33 |
| 2011 | 54 |
| 2010 | 53 |
| 2009 | 44 |
| 2008 | 52 |
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 |
|---|---|---|---|
| Snowy Range | 227 | 37 | May 18, 2026 |
| Sierra Madre Range | 199 | 41 | May 18, 2026 |
| Teton and Gros Ventre Mountains | 174 | 41 | April 16, 2026 |
| Salt River and Wyoming Ranges | 127 | 30 | April 2, 2026 |
| Wind River Mountains East | 127 | 27 | May 18, 2026 |
| South Laramie Range | 111 | 16 | May 18, 2026 |
| Wyoming Black Hills | 109 | 13 | April 3, 2026 |
| Wind River Mountains West | 105 | 24 | April 16, 2026 |
| North Snowy Range Foothills | 104 | 13 | May 18, 2026 |
| Yellowstone National Park | 104 | 27 | April 16, 2026 |
| Star Valley | 100 | 12 | February 13, 2025 |
| Jackson Hole | 97 | 13 | February 13, 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.
The latest winter storm warnings for Wyoming in AreaZine's record
NWS CheyenneWarningMay 17, 2026
Winter Storm Warning: Sierra Madre Range, WY
Expired 6:00 p.m. MDT, May 18, 2026
NWS RivertonWarningMay 17, 2026
Winter Storm Warning: Lander Foothills, WY
Expired 6:00 p.m. MDT, May 18, 2026
NWS CheyenneWarningMay 5, 2026
Winter Storm Warning: Laramie Valley, WY
Expired 9:00 a.m. MDT, May 6, 2026
NWS RivertonWarningApril 15, 2026
Winter Storm Warning: Wind River Mountains West and Wind River Mountains East, WY
Expired 6:00 p.m. MDT, April 17, 2026
This list is AreaZine's record of the NWS alert feed, kept since April 6, 2026; the counts above come from the complete IEM archive.
Source: National Weather Service alerts (api.weather.gov).
What is a winter storm warning?
A winter storm warning means significant snow, sleet or freezing rain is expected that will make travel very difficult or impossible. Each office sets the amounts for its area. A warning means the hazard is happening, about to happen, or very likely: act now to protect people and property. The national record · Every warning type in Wyoming.