Temperature for January 1978
In January 1978 the average high temperature in Key West, FL was 71.0°F, and this was 4.9°F cooler than the average of 75.8°F. The hottest day in January 1978 was 1 January when the temperature reached 80.1°F. Overnight the average temperature in January is 63.7°F and in 1978 the average overnight temperature was 5.3°F cooler at 58.4°F.