Heat will be the main story this weekend, transitioning to increased humidity and scattered afternoon thundershowers as monsoon moisture increases across the region. Expect another warm day out there today as temperatures remain 5-7 degrees above average with highs in the mid-80s. We may see a few afternoon clouds today, but weak instability and subsidence will provide a cap, preventing any thunderstorm development. That will begin to change tomorrow as better moisture and instability arrive, with a few isolated thundershowers possible during the afternoon. Highs will top out in the mid 80s again on Sunday along with south to southwest winds 10-20 mph at times. High pressure will reset over the Four Corners next week, leading to a moist east to southeast flow into Southern California. This should draw good moisture into the area for daily chances of showers and thunderstorms, with some variability in coverage and intensity from day to day, a few could even spill west of the mtns across some of our coastal & valley areas. We'll also have to watch for easterly waves, which could further enhance our thunderstorm chances. Temperatures will cool throughout the week as highs drop from the 80s early in the week to the 70s later in the week, slightly below average for a change, with overnight lows generally in the 50s.

---