If you planning to travel to Lone Star Geyser, 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 2:36 PM. The temperature feels like 10.299999999999999 with a humidity level of 92 so dress accordingly. Cloud coverage is 49 percent with visibility at 10.1 percent. Today’s UV index is 2, don’t forget the sunscreen if you need it! Today’s winds are traveling west-southwest at a speed of 4 MPH. At the end of the day don’t miss the sunset at 11:46 PM.