We're going at the beginning of February with kids ages 5, nearly 3, and 5 months too. Haven't been during that time, but we have been in December and August. The last time we went in December 2009, we had everything from one day where it absolutely poured all day and was quite cold (we were bundled up in hats and scarves) to another day where it was in the 80s, hot and sunny. And that was all in a span of 7 days. I'll be expecting the same kind of ranges in Feb. Makes it hard to pack, especially with little ones, but that's what we get for choosing a less busy time of year.