This table shows monthly rainfall in inches for Big Cypress Nat'l Preserve from 1989 to present. The table is organized to highlight south Florida's summer wet and winter dry halves of the year. And by year I mean water year, not calendar year. South Florida's water year runs from May to April, not January to December. This December was dry, only 0.5 inches of rain. Color coding shows wet and dry months, blue indicating high rain totals and red indicating low rain totals.