Key West In November 2024 Temperature. In general, the average temperature in key west at the beginning of november is 78 °f. Expect 27°c daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in key west in november.

August is the hottest month in key west, with average temperatures ranging from an average high of 91 to a low of 81 degrees. Daytime temperatures hover around 27°c, while nights can cool down to about 22°c.