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 12:43 PM. The temperature feels like 40.1 with a humidity level of 76 so dress accordingly. Cloud coverage is 86 percent with visibility at 14 percent. Today’s UV index is 0, don’t forget the sunscreen if you need it! Today’s winds are traveling west at a speed of 22 MPH. At the end of the day don’t miss the sunset at 10:15 PM.