If you planning to travel to Siesta Key Marina, Siesta Key, 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 11:12 AM. The temperature feels like 71.6 with a humidity level of 90 so dress accordingly. Cloud coverage is 70 percent with visibility at 11 percent. Today’s UV index is 3, don’t forget the sunscreen if you need it! Today’s winds are traveling northwest at a speed of 15 MPH. At the end of the day don’t miss the sunset at 11:52 PM.