Temperature for March
In Key West, FL during March the average high temperature is 79.5°F. The hottest day on record was March 29, 1994 when the temperature hit 88.0°F.
Precipitation for March
In March the average monthly rainfall in Key West, FL is 3.29 inches with rain usually falling on between 6 and 7 days. 2006 was the driest March with only 0.05 inches of rain falling, and 1974 was the wettest March with 37.56 inches of rain. The wettest single day in March was 16 March 1974 when 17.09 inches of rain fell.
In March it usually snows on between 0 and 1 days. Tornados are reported on 0 and 1 days in March. There are thunderstorms on between 1 and 2 days in March.