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 2:55 PM and don’t miss the sunset at 12:52 AM. Today’s winds are traveling south at a speed of 19 MPH. The temperature feels like 61 with a humidity level of 70. Cloud coverage is 93 percent with 12.7 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.