March is totally different than Feb - it's like May vs June in Ontario. It;s a mixed bag so keep an eye on the weather.
We did early Feb a few years back and while daytime highs were "close" to 70F, evenings were really cold - and by this I mean 9 or 10C degrees which doesn't sound too bad but if you are watching Fantasmic and the wind is blowing on you, it is COLD! We needed hats, mits and about 3 layers! Blankets would have been amazing!
There was frost a few mornings when we left for parks. The DDs swam but we didn't - a few hottub nights. The lifeguards had winter coats and sweats on!!
But again, I have also been in Dec and it was HOT! Keep an eye on the forecast and pack for a bit of everything!