When it comes to how the weather affects insects like cockroaches there are a few key things for you to know the first being the amount of food these insects need to survive. In order for these insects to thrive all they need is mold, some mildew, and a fresh supply of water and because of this it only makes sense that they tend to take shelter in within the drainage system of your home.
Overall, cockroaches are minimally affected by the changes in weather. This makes them a nuisance all year round.