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 2:57 PM. The temperature feels like 55.65 with a humidity level of 93 so dress accordingly. Cloud coverage is 91 percent with visibility at 0.6 percent. Today’s UV index is 1, don’t forget the sunscreen if you need it! Today’s winds are traveling south at a speed of 22 MPH. At the end of the day don’t miss the sunset at 12:54 AM.