I'm now seeing the new issue of the LVA (for September 2012) and in the Weather section of the Advance Planner section, that says that for October weather, that there is a Mean Temperature of 67 Degrees, with an Average Maximum Temperature of 81 Degrees and an Average Minimum Temperature of 53 Degrees.
The description says: Pools: Open, Balmy days, cool evenings toward the end of the month.
And as for attire, the LVA suggests: Short sleeves durng the day, light jacket for evenings.
I hope that this helps you, but again, do check out the Weather Channel website for the forecast before you go.
RecVPPlayer