Temperature for January 1991
In January 1991 the average high temperature in Key West, FL was 79.8°F, and this was 4.0°F warmer than the average of 75.8°F. The hottest day in January 1991 was 31 January when the temperature reached 84.0°F. Overnight the average temperature in January is 63.7°F and in 1991 the average overnight temperature was 7.9°F warmer at 71.6°F.