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 12:50 PM. The temperature feels like 7.45 with a humidity level of 74 so dress accordingly. Cloud coverage is 59 percent with visibility at 14 percent. Today’s UV index is 2, don’t forget the sunscreen if you need it! Today’s winds are traveling east-southeast at a speed of 13 MPH. At the end of the day don’t miss the sunset at 11:07 PM.