On my past three January trips, I been to Typhoon Lagoon twice and once to Blizzard Beach. The air temp on each trip was around 70 degrees, which is considered quite "cold" by Floridians! But at 70 degrees, there were people there - not a lot, though! I must say, I have the best time on these winter visits! Very low crowds, no lines to the slides or tubes, plenty of room in the wave pool at Typhoon Lagoon.

On the lazy rivers, I could float without seeing another person for quite awhile. I only do water parks in the winter now, as I also been in May and can't stand crowds and the bosy attitude of the CM's then

. Disney does only open one water park in the winter months. This last winter it was Blizzard Beach.
As for closing when it is too cold, I do believe Disney does that, too. One year when I was at Typhoon Lagoon in January, I heard all the CM's there get the word that the next day, the temperature was forcast to be 55 degrees, so it was already decided the park would be closed. All the CM's seemed happy to have the day off!
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