If you planning to travel to Upper Sardine Lake, Sierra City, 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 2:59 PM. The temperature feels like 20.2 with a humidity level of 77 so dress accordingly. Cloud coverage is 9 percent with visibility at 14.9 percent. Today’s UV index is 3, don’t forget the sunscreen if you need it! Today’s winds are traveling east-northeast at a speed of 8 MPH. At the end of the day don’t miss the sunset at 12:39 AM.