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Painting Tips Â» Hot Weather Painting. Satisfactory painting in hot weather and high humidity can sometimes be difficult. Certain steps can be taken to minimize the effect of these conditions. Temperatures exceeding 90Â°F will often cause paint to dry too fast. Dry-rolling will be accentuated with these higher temperatures.
Always allow extra time in cooler temperatures and/or higher humidity. Painting too late in the day may not allow adequate drying time before temperatures drop in the evening. An important thing to remember in interior painting projects is that increased air circulation will cause a faster dry.f you apply too thin a coat it may dry too quickly, leaving brush and roller marks; however, too thick a coat may dry very slowly and result in a patterned surface. Instead, apply multiple thinner coats (rather than fewer thick coats) for a faster dry.