If you planning to travel to River Park Marina, Port Saint Lucie, Florida, 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 12:09 PM. The temperature feels like 65.55 with a humidity level of 91 so dress accordingly. Cloud coverage is 55 percent with visibility at 8.2 percent. Today’s UV index is 2, don’t forget the sunscreen if you need it! Today’s winds are traveling south at a speed of 5 MPH. At the end of the day don’t miss the sunset at 10:35 PM.