Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Winter Weather Advisory |
| Area(s): | Northwest Beaverhead County; Ruby Mountains and Southern Beaverhead Mountains; Gallatin and Madison County Mountains and Centennial Mountains |
| Effective: | 2026-06-26 @ 12:54 am -> 2026-06-26 @ 4:00 pm |
| Onset: | 2026-06-28 @ 1:00 am -> 2026-06-29 @ 1:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-06-26 @ 12:54 am |
| Headline: | Winter Weather Advisory issued June 25 at 11:54PM MDT until June 29 at 12:00PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Periods of wet snow expected. Total snow accumulations up to 4 inches above 6500 feet. * WHERE...Gallatin and Madison County Mountains and Centennial Mountains, Northwest Beaverhead County, and Ruby Mountains and Southern Beaverhead Mountains. * WHEN...From midnight Saturday Night to noon MDT Monday. Snow levels will be lowest during the overnight and early morning hours. * IMPACTS...Plan on cold and wet backcountry conditions with a heightened hypothermia risk for those not properly dressed. Wet snow may down trees and block access to forest roadways. * ADDITIONAL DETAILS...Campers should be aware that it only takes a few inches of snow to damage tents and other recreational items. |
| Alert: | Winter Storm Watch |
| Area(s): | Bitterroot/Sapphire Mountains |
| Effective: | 2026-06-25 @ 12:56 pm -> 2026-06-27 @ 4:00 pm |
| Onset: | 2026-06-27 @ 7:00 pm -> 2026-06-29 @ 10:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Missoula MT on 2026-06-25 @ 12:56 pm |
| Headline: | Winter Storm Watch issued June 25 at 11:56AM MDT until June 29 at 9:00AM MDT by NWS Missoula MT |
| Description: |
* WHAT...Heavy wet snow possible above 6500 feet. Total snow accumulations up to 8 inches possible. * WHERE...Backcountry and higher elevation areas. * WHEN...From Saturday evening through Monday morning. * IMPACTS...Plan for winter-like conditions in the backcountry and higher elevations. Cold temperatures and wet snow will elevate the risk of hypothermia. Heavy wet snow may down trees, blocking access to backcountry roadways. |
| Alert: | Winter Storm Watch |
| Area(s): | Butte/Blackfoot Region |
| Effective: | 2026-06-25 @ 12:56 pm -> 2026-06-27 @ 4:00 pm |
| Onset: | 2026-06-27 @ 7:00 pm -> 2026-06-29 @ 10:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Missoula MT on 2026-06-25 @ 12:56 pm |
| Headline: | Winter Storm Watch issued June 25 at 11:56AM MDT until June 29 at 9:00AM MDT by NWS Missoula MT |
| Description: |
* WHAT...Heavy wet snow possible above 6500 feet. Total snow accumulations up to 6 inches, with higher amounts across the Anaconda and Pintler Mountains possible. * WHERE...Backcountry and higher elevation areas, Georgetown Lake. * WHEN...From Saturday evening through Monday morning. * IMPACTS...Plan for winter-like conditions in the backcountry and higher elevations. Cold temperatures and wet snow will elevate the risk of hypothermia. Heavy wet snow may down trees, blocking access to backcountry roadways. |