Slightly cooler for the coast to around 4 to 8 degrees cooler for the mountains, deserts, and inland valleys. High temperatures for Friday for the coastal areas: 61 to 65, western valleys and inland Orange County: 63 to 67, inland valleys: 60 to 67, mountains between 4000 feet and 7000 feet: 49 to 62, high desert: 65 to 76, low desert: 79 to 85.