Temperature for January
In Key West, FL during January the average high temperature is 75.8°F. The hottest day on record was January 18, 2010 when the temperature hit 86.0°F.
Precipitation for January
In January the average monthly rainfall in Key West, FL is 4.01 inches with rain usually falling on between 7 and 8 days. 1990 was the driest January with only 0.00 inches of rain falling, and 1974 was the wettest January with 57.89 inches of rain. The wettest single day in January was 15 January 1974 when 18.15 inches of rain fell.
In January it usually snows on between 0 and 1 days. There are thunderstorms on between 1 and 2 days in January.