If you planning to travel to California State University-Northridge, Simi 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 1:06 PM. The temperature feels like 65.55 with a humidity level of 60 so dress accordingly. Cloud coverage is 5 percent with visibility at 13.4 percent. Today’s UV index is 10, don’t forget the sunscreen if you need it! Today’s winds are traveling south-southeast at a speed of 4 MPH. At the end of the day don’t miss the sunset at 2:36 AM.