If you planning to travel to National Park Mountain, Yellowstone National Park, Wyoming, here is your 6-day travel weather forecast to make sure you have all the essentials needed during your stay. Start your day when the sunrises at 2:22 PM. The temperature feels like 17.95 with a humidity level of 88 so dress accordingly. Cloud coverage is 77 percent with visibility at 10.8 percent. Today’s UV index is 1, don’t forget the sunscreen if you need it! Today’s winds are traveling west at a speed of 4 MPH. At the end of the day don’t miss the sunset at 11:54 PM.