In all of these three grand divisions of climate, however, exceptional localities exist where there is a marked nonconformity to the prevailing characteristics. The peninsula of Florida is such an exception, owing to its peculiar location, and the great humidity of its atmosphere during a considerable fraction of the year. Here we have a fully developed season of periodical rains, beginning usually in June and ending in the latter part of September. The winter is the dry season, being contrary to the general rule applying to tropical and sub-tropical areas, and forms, with the mild temperature, the principal ground for the reputation which that State has as a resort for special classes of invalids.[B]
The sudden and extreme variations of temperature in this eastern climatic tract, whether from local disturbing causes, as is not unfrequently the case, or otherwise, are usually accompanied by cold draughts of air, chilling and generating all manner of ills, of which rheumatism and consumption are the separate and highest types.
While it is generally understood that the prevailing winds of the whole continent embraced within the limits of the United States are uniformly from the west, still, over this eastern division, counter-winds of a lower character disturb, modify, and elevate the course of this great westerly current, giving rise to the exceeding variability of the surface winds, which, as is well known, may blow within the brief space of twenty-four hours from all directions of the compass, at almost any time and point whatsoever.