If you planning to travel to Grand Gulf Military Park, Port Gibson, Mississippi, 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 12:38 PM. The temperature feels like 49.2 with a humidity level of 59 so dress accordingly. Cloud coverage is 2 percent with visibility at 13.4 percent. Today’s UV index is 4, don’t forget the sunscreen if you need it! Today’s winds are traveling west-northwest at a speed of 7 MPH. At the end of the day don’t miss the sunset at 11:01 PM.