Most materials decrease in strength monotonically with increasing temperature, so, all other things being equal, a larger safety factor may be required for a building in a hot climate than in a cold one. But for most materials, the range of temperatures on Earth is probably not large enough to make a large difference in the required safety factor for buildings. Of course for systems operating at high temperatures such as power plants temperature may be the most important factor, but for buildings wind and seismic loads are probably usually more important. (There are rare examples of materials that increase in strength with increasing temperature over a limited temperature range, although of course no material can increase in strength with increasing temperature indefinitely.)
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