If you planning to travel to Devil's Postpile National Monument, Mammoth Lakes, 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 1:34 PM. The temperature feels like 50.25 with a humidity level of 31 so dress accordingly. Cloud coverage is 8 percent with visibility at 14.9 percent. Today’s UV index is 2, don’t forget the sunscreen if you need it! Today’s winds are traveling south-southwest at a speed of 13 MPH. At the end of the day don’t miss the sunset at 2:09 AM.