West Yellowstone Road Conditions & Weather Alerts Sunday – Saturday December 28, 2025 – January 4, 2026 Sunday: Sunny with a high of 17F and a low of -2F. Monday: Partly cloudy with a high of 24F and a low of 7F. Tuesday: Partly cloudy with a high of 32F and a low of 10F. Wednesday: Mostly sunny with a high of 36F and a low of 16F. Thursday: Snow. Cloudy with a high of 35F and a low of 25F. Friday: Snow. Cloudy with a high of 35F and a low of 29F. Saturday: Snow. Cloudy with a high of 36F and a low of 27F. Changing weather conditions exist. Be prepared when traveling through Yellowstone Country. Be prepared with layers! Up-to-date conditions at weather.gov All entrances and roads in Yellowstone National Park are closed to regular vehicle traffis except the north entrance road from Gardiner to Cooke City. Select roads in Yellowstone, including the west entrance and west entrance road, opened to guided snowcoach and snowmobile tours on December 15. The guided over-the-snow season ends on March 15. Check travel conditions: Montana travel conditions (1-800-226-7623) Wyoming travel conditions (1-888-996-7623) Idaho – 511.idaho.gov or dial 5-1-1. Yellowstone Road Conditions: For up-to-date information call (307) 344-2117 for recorded information or sign up to receive Yellowstone Road alerts on your mobile phone by texting “82190” to 888-777 (an automatic text reply will confirm receipt and provide instructions). Anticipate possible road closures due to inclement weather and dangerous driving conditions.