Traveling to Black Diamond Mines Regional Preserve, Antioch, California? 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 2:56 PM and don’t miss the sunset at 12:51 AM. Today’s winds are traveling south at a speed of 17 MPH. The temperature feels like 60 with a humidity level of 81. Cloud coverage is 94 percent with 10.4 percent visibility. Today’s UV index is 1 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.