There used to be a great site with statistical weather averages, but I can't find it anymore.
But, we went 18-25 Nov 2005. The first 3 days were great: highs in the upper 70s, lows in the 50s. The mornings were perfect. Then a front came through and dumped a lot of rain and left with cold, blustery, albeit clear, weather. It was pretty nippy in the mornings (low 40s) but warmed to mid 60s in the afternoon.
If it is early November, you should have more of the 50s/70s weather, but a front can always come through