If you planning to travel to Discovery Island Water Park, Simpsonville, South Carolina, 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 12:36 PM. The temperature feels like 30.95 with a humidity level of 76 so dress accordingly. Cloud coverage is 6 percent with visibility at 12.3 percent. Today’s UV index is 3, don’t forget the sunscreen if you need it! Today’s winds are traveling southwest at a speed of 3 MPH. At the end of the day don’t miss the sunset at 10:41 PM.