Sunlit surfaces can be 10 to 20 degrees hotter than the air temperature avoid painting in direct sunlit temperatures. Wind can cause latex paint to dry too quickly as well as cause dust and other contaminates to imbed in the paint. Do we need to say it? Don’t paint if it has rained within the last 24 hours. Apply a coat of primer to any new surface that has never been painted, or spot-prime areas where paint has worn away. Use top quality 100 percent acrylic latex paint. It’s durable, flexible, colorfast, and can often last 10 years or more compared to ordinary paint. Postponing painting the exterior of a home that is long overdue can actually cause damage to a home. Exposed wood can begin to rot and other types of exterior siding also can suffer when the paint starts to wear off.