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 12:42 PM. The temperature feels like 54.25 with a humidity level of 85 so dress accordingly. Cloud coverage is 42 percent with visibility at 10.7 percent. Today’s UV index is 2, don’t forget the sunscreen if you need it! Today’s winds are traveling east at a speed of 6 MPH. At the end of the day don’t miss the sunset at 11:00 PM.