If you planning to travel to Holy Terror Mini Golf, Keystone, 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 1:50 PM. The temperature feels like 31.849999999999998 with a humidity level of 52 so dress accordingly. Cloud coverage is 16 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 west-northwest at a speed of 10 MPH. At the end of the day don’t miss the sunset at 11:25 PM.