Sunday – SaturdayAugust 16, 2026 – August 22, 2026Sunday: Partly cloudy with a high of 72F and a low of 40F.Monday: Mostly cloudy with a high of 72F and a low of 41F.Tuesday: Partly cloudy with a high of 70F and a low of 37F.Wednesday: Sunny with a high of 75F and a low of 41F.Thursday: Mostly sunny with a high of 80F and a low of 45F.Friday: Partly cloudy with a high of 82F and a low of 49F.Saturday: Mostly cloudy with a high of 74F and a low of 46F.Changing weather conditions exist. Be prepared when traveling through Yellowstone Country. Be prepared with layers! Up-to-date conditions at weather.govThe west entrance to Yellowstone opened to regular vehicle traffic on April 17.Yellowstone National Park 2026 regular vehicle opening and closing dates are posted below.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.