January weather forecast in Key Largo

January in Key Largo is the coldest month of the year. In January, the weather in Key Largo is typically warm. Average daily high temperature in January is about 22 degrees above zero. On average, Key Largo has 18 sunny, 10 partly cloudy, and 3 rainy days in January. The rains are usually light. January as well as February and March is considered the most comfortable time to visit Key Largo.