If you planning to travel to Obsidian Cliff, 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 2:54 PM. The temperature feels like 13.35 with a humidity level of 92 so dress accordingly. Cloud coverage is 73 percent with visibility at 8 percent. Today’s UV index is 2, don’t forget the sunscreen if you need it! Today’s winds are traveling southwest at a speed of 8 MPH. At the end of the day don’t miss the sunset at 11:42 PM.