Traveling to Greater Grass Valley Chamber of Commerce and Visitors Center, Grass Valley, California, USA? Here is your 6-day weather forecast in the area. Whether it is a warm weather destinations or cold climate don’t forget to consider weather, while you pack your bags for this trip. Start your day when the sunrises at 2:52 PM and don’t miss the sunset at 12:46 AM. Today’s winds are traveling southeast at a speed of 9 MPH. The temperature feels like 41 with a humidity level of 91. Cloud coverage is 97 percent with 4.9 percent visibility. Today’s UV index is 0 make sure to prepare properly. Make sure to plan your travel itinerary to match your travel weather forecast to make the most of your vacation with Reservations.com.