If you planning to travel to Muir Woods National Monument, 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 1:46 PM. The temperature feels like 64.2 with a humidity level of 78 so dress accordingly. Cloud coverage is 6 percent with visibility at 14.3 percent. Today’s UV index is 8, don’t forget the sunscreen if you need it! Today’s winds are traveling west at a speed of 2 MPH. At the end of the day don’t miss the sunset at 2:28 AM.