You probably realize that rain and chalk art are not a good combination. While January and February, when the Epcot International Festival of the Arts takes place, aren’t part of the Wet Season in Florida, there can still be precipitation.
Disney and the chalk artists will try to cover the chalk art if the rain isn’t too heavy, but there’s a good chance that the art you see before the storm won’t be there after it passes. The good news is that means there will be more incredible chalk art once the ground is dry again.