Latex paint cracks when it is hot. It will be fine if it rains.

Latex paint problems The quality of latex paint is too poor, or too little water is added, which is prone to micro cracks during construction. If the putty layer is not completely dry, it is easy to have tiny cracks. If the weather is too hot and dry when it is dry, the paint film is easy to crack. If the coating method of latex paint is inappropriate and the thickness is inconsistent, it can't be done together. In this case, shrinkage cracks are easy to occur.