premise: How to apply window decals<br>Determine if the conditions are right. You should only apply decals when the weather is mild. Don't try to apply decals when it is extremely cold or hot.
hypothesis: It's OK to apply window decals in the middle of winter.
reason: If you live in Southern California or South Texas or South Florida, or some other place that can get mild temperatures in the middle of winter, you can, according to this passage, put on window decals. If you live in Canada, you are most likely never going to see mild weather until after winter.