If you planning to travel to Scientopia Discovery Center, Napa, 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 3:26 PM. The temperature feels like 53.2 with a humidity level of 64 so dress accordingly. Cloud coverage is 6 percent with visibility at 13.6 percent. Today’s UV index is 3, don’t forget the sunscreen if you need it! Today’s winds are traveling southeast at a speed of 2 MPH. At the end of the day don’t miss the sunset at 1:08 AM.