If you planning to travel to Grand Isle Butterfly Dome, Grand Isle, Louisiana, 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 12:51 PM. The temperature feels like 65.15 with a humidity level of 92 so dress accordingly. Cloud coverage is 62 percent with visibility at 8.3 percent. Today’s UV index is 3, don’t forget the sunscreen if you need it! Today’s winds are traveling east-southeast at a speed of 12 MPH. At the end of the day don’t miss the sunset at 11:10 PM.