If you planning to travel to Charles Mears State Park, Pentwater, 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 12:40 PM. The temperature feels like 45.6 with a humidity level of 94 so dress accordingly. Cloud coverage is 89 percent with visibility at 8 percent. Today’s UV index is 0, don’t forget the sunscreen if you need it! Today’s winds are traveling east-northeast at a speed of 6 MPH. At the end of the day don’t miss the sunset at 10:19 PM.