Key West In November 2024 Weather Forecast. Generally, november in key west will be really nice, with an average temperature of around 82°f / 28°c. But due to the moderate humidity it.

Winter will be cooler than usual and coldest in the late parts of the months of november, december, january, and february. Compared to october, the air temperature slightly decreases in november, ranging from 72°f (22°c) to 81°f (27°c).