The weather in the Bahamas is pretty similar to that of the Miami/Fort Lauderdale area. You can expect daytime temperatures in the 70's or 80's most of the time
, but the area does get cooler weather now and then so you need to be prepared for it. Every once in a while, this area does get a dusting to an inch of snow. You probably will have good beach weather, but you're far enough north so there's no guarantee.
I can assure you that there is NEVER a "dusting of snow" in the Miami/Fort Lauderdale area in November! EVER!!! I've been here since 2001 and the weather in November is always wonderful! We had a cool winter last year (Jan-Feb), but that was unusual. I did not break out the boots, sweatshirts, skis, gloves or hats!
Come on down!