average weather in venice, ca in mid september
By mid-September, averages are around 66Â°F, with highs of 74Â°F and lows of 59Â°F. By September 30, averages taper off to 64Â°F, with highs of 70Â°F and lows of 56Â°F. In September, Venice begins to quiet down as the tourist crowds slip away for the season.