Jacksonville temperature january January is also the wettest month in Jacksonville, with an average precipitation of around 3.5 inches (89 millimeters). This is due to the cold fronts that move south from the Great Lakes, bringing with them rain and sometimes even snow. However, snowfall in Jacksonville is extremely rare, and if it does occur, it usually melts immediately. Despite the mild temperatures and occasional rain, January is a popular time to visit Jacksonville. The city is less crowded than in the summer months, and the cooler weather is a welcome relief for many visitors. There are also several events and festivals that take place in Jacksonville in January, including the Jacksonville Jazz Festival and the Jacksonville Kingfish Tournament. January is also the wettest month in Jacksonville, with an average precipitation of around 3.5 inches (89 millimeters). This is due to the cold fronts that move south from the Great Lakes, bringing with them rain and sometimes even snow. However, snowfall in Jacksonville is extremely rare, and if it does occur, it usually melts immediately. Despite the mild temperatures and occasional rain, January is a popular time to visit Jacksonville. The city is less crowded than in the summer months, and the cooler weather is a welcome relief for many visitors. There are also several events and festivals that take place in Jacksonville in January, including the Jacksonville Jazz Festival and the Jacksonville Kingfish Tournament. In conclusion, the temperature in Jacksonville in January is relatively mild, with average high temperatures around 66 degrees Fahrenheit (19 degrees Celsius) and average low temperatures around 46 degrees Fahrenheit (8 degrees Celsius). The city experiences its highest precipitation in January, with an average of 3.5 inches (89 millimeters) of rain. Despite the occasional rain and cooler temperatures, January is a popular time to visit Jacksonville, with several events and festivals taking place throughout the month.