If you planning to travel to Black Sand Basin, 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 18.35 with a humidity level of 89 so dress accordingly. Cloud coverage is 62 percent with visibility at 10 percent. Today’s UV index is 0, don’t forget the sunscreen if you need it! Today’s winds are traveling southwest at a speed of 5 MPH. At the end of the day don’t miss the sunset at 11:46 PM.