If you planning to travel to Ben Reifel Visitor Center, Interior, South Dakota, 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 1:43 PM. The temperature feels like 37.75 with a humidity level of 66 so dress accordingly. Cloud coverage is 15 percent with visibility at 13.6 percent. Today’s UV index is 3, don’t forget the sunscreen if you need it! Today’s winds are traveling west at a speed of 14 MPH. At the end of the day don’t miss the sunset at 11:21 PM.