Key West Florida Climate Data

Monthly Average Climate Data for Key West Florida

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January64.4 °F74.7 °F1.71 in.
February66.0 °F76.5 °F2.06 in.
March68.4 °F78.5 °F1.53 in.
April72.4 °F82.4 °F2.26 in.
May75.7 °F85.4 °F3.09 in.
June78.7 °F88.3 °F4.7 in.
July79.7 °F90.1 °F4.14 in.
August79.8 °F90.0 °F5.49 in.
September78.6 °F88.6 °F7.24 in.
October76.3 °F85.3 °F6.55 in.
November71.3 °F80.1 °F2.45 in.
December67.6 °F76.8 °F2.03 in.
Annual73.2 °F83.1 °F43.25 in.

Climate Data for Key West Florida

Average First Frost DateNo Frost
Average Last Frost Date
Average Days With FrostFrost Free
Plant Hardiness Zone - 2023Zone 11b : 45°F to 40°F
Plant Hardiness Zone - 2012Zone 11b : 45°F to 40°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationAw - Tropical Savanna (Wet and Dry Climate)