Houston summers come with plenty of fun, sun, heat, rain – and a number of pesky pests that like to swarm, slither, creep and crawl in and around your home. While the calendar may put the first official day of summer on June 21, pests in Houston don’t pay calendars much mind. Thanks to a moderate year-round climate and average temperatures in the 70s as early as March, Houston’s summer pests can come out to play at a very early date.