weather report in antioch ca
1 There is 37 percentage chance of rain and 8 mph winds from the West. 2  2pm:The Antioch, CA forecast for Aug 13 is 95 degrees and Sunny. There is 23 percentage chance of rain and 12 mph winds from the West.  5pm:The Antioch, CA forecast for Aug 13 is 93 degrees and Sunny.