By using Puerto Rico to zoom in, I seem to be in 13a. I'm guessing that is how Melissa in St Croix got her zone of 13b. I think Dave needs to add some higher zones to the drop down list in profiles
Our avg minimum temps are between 60°F and 65°F in January. However, these zones don't help much for tropical climates where the amount of rain, whether it is year around or seasonal, humidity and avg highs are more important. We are hotter in the spring than any other time of the year (avg high 83°, max 97° in May), because the rains don't start until sometime in June. We get about 40" of rain annually but almost all of it within 4 or 5 months in the summer and it can be very dry in the winter.
