March weather forecast in Key Largo

March in Key Largo is the windiest month of the year. In March, the weather in Key Largo is typically warm. Average daily high temperature in March is about 23 degrees above zero. On average, Key Largo has 22 sunny, 5 partly cloudy, and 4 rainy days in March. The rains are usually light. March as well as January and February is considered the most comfortable time to visit Key Largo.