On Nov. 1 the normal high is 59 and the normal low is 46. Then there's a gradual cool down with normal temps each day and on Nov. 30 the normal high is 48 and the normal low is 37. November is usually associated with cold weather for some reason but there are always plenty of days where the temps are at least in the mid 60's and sunny. In recent years most high temps in November have been between 35 and 70 degrees and the lows were between 25 and 60 degrees. Most days are usually partly cloudy and partly sunny with occasional cloudy and rain days. Snow is rare in November. If there is any at all, it's usually just flurries during the last week of the month. There hasn't been any significant accumulating snow since 1995 which got 2.5 inches for the whole month. I recommend this travel planner and it will breakdown the climate for the days you will be there and shows you what type of weather to expect. Just type in "KLGA" which is the ICAO code for La Guardia Airport (there's data for there on this site than Central Park) and select the dates for which you'll be there.
http://www.Wunderground.Com/tripplanner/…