If you planning to travel to Grand Haven State Park, Grand Haven, Michigan, 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 12:27 PM. The temperature feels like 30.299999999999997 with a humidity level of 81 so dress accordingly. Cloud coverage is 77 percent with visibility at 12.1 percent. Today’s UV index is 1, don’t forget the sunscreen if you need it! Today’s winds are traveling southwest at a speed of 23 MPH. At the end of the day don’t miss the sunset at 11:28 PM.