We're looking at some nice fall-like weather to round out the week, with slightly below-normal temperatures and breezy afternoons as a trough of low pressure off the West Coast maintains the onshore flow. The flow around this trough will also draw tropical moisture northward into the region this weekend from Hurricane Marie. There should be enough moisture and instability around for scattered showers and thunderstorms, mainly Saturday afternoon through Labor Day. Expect mostly sunny skies on Friday with highs in the lower 70s, west winds continuing 10-15 mph gusting to 20 mph during the afternoon. Clouds will increase on Saturday with a chance of showers developing during the afternoon. As deeper moisture arrives Saturday night into Sunday, we could experience scattered showers and thunderstorms anywhere in Southern California, with the greatest risk over the mountains. However, overcast skies may somewhat limit instability for widespread thunderstorm activity. Highs will cool to the upper 60s and lower 70s over the weekend, with overnight lows generally in the 50s. Rainfall amounts of around a tenth to a quarter inch are possible, with isolated higher amounts near one half to an inch under any thunderstorms. Scattered showers may linger into Labor Day, with drier conditions returning by the middle of next week. Longer-range forecast models suggest another surge of moisture could arrive later in the week and will be monitored for potentially more wet weather!

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