If you planning to travel to Thunderhead Falls, Rapid City, United States, 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 1:57 PM. The temperature feels like 35.25 with a humidity level of 43 so dress accordingly. Cloud coverage is 8 percent with visibility at 14.9 percent. Today’s UV index is 2, don’t forget the sunscreen if you need it! Today’s winds are traveling south-southwest at a speed of 4 MPH. At the end of the day don’t miss the sunset at 11:21 PM.