If you planning to travel to Marin Headlands Visitor Center, Mill Valley, California, 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 1:58 PM. The temperature feels like 54.5 with a humidity level of 87 so dress accordingly. Cloud coverage is 34 percent with visibility at 10 percent. Today’s UV index is 4, don’t forget the sunscreen if you need it! Today’s winds are traveling west at a speed of 9 MPH. At the end of the day don’t miss the sunset at 2:05 AM.