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 11:25 AM. The temperature feels like 74.94999999999999 with a humidity level of 88 so dress accordingly. Cloud coverage is 41 percent with visibility at 6 percent. Today’s UV index is 10, don’t forget the sunscreen if you need it! Today’s winds are traveling southeast at a speed of 8 MPH. At the end of the day don’t miss the sunset at 12:31 AM.