In Miami, Fort Lauderdale, and West Palm Beach there has been only one known report of snow flurries observed in the air in more than 200 years; this occurred in January 1977.
In general, frost is more common than snow, requiring temperatures of 32 °F (0 °C) or less at 2 m (7 ft) above sea level, a cloudless sky, and a relative humidity of 65% or more.
[2] Generally, for snow to occur, the polar jet stream must move southward through Texas and into the Gulf of Mexico, with a stalled cold front across the southern portion of the state curving northeastward to combine freezing air into the frontal clouds.
[8] Due to larger populations and more advanced communication networks, snow events are witnessed and reported much more frequently in recent years than in historical eras.
Interpretations of this timeline must therefore be made with caution, as observed patterns may not reflect actual climate-related trends in annual snowfall but rather improved reporting.