A slow cooling trend starts on Wednesday. Inland temperatures will drop a 3-5 degrees each day, adding up to a 10 to 15 degree drop by Friday. Increased onshore flow will bring overnight clouds farther onshore as the week goes on. Stream San Diego News for free, 24/7, wherever you are with NBC 7. WATCH HERE WATCH HERETemperatures this weekend will be comfortable but monsoonal moisture will also return.