If you planning to travel to Grand Isle State Park, 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 12:30 PM. The temperature feels like 62.050000000000004 with a humidity level of 64 so dress accordingly. Cloud coverage is 5 percent with visibility at 14.9 percent. Today’s UV index is 5, don’t forget the sunscreen if you need it! Today’s winds are traveling east-northeast at a speed of 5 MPH. At the end of the day don’t miss the sunset at 11:01 PM.