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 12:41 PM. The temperature feels like 55.3 with a humidity level of 92 so dress accordingly. Cloud coverage is 81 percent with visibility at 8.9 percent. Today’s UV index is 1, don’t forget the sunscreen if you need it! Today’s winds are traveling south at a speed of 24 MPH. At the end of the day don’t miss the sunset at 10:16 PM.