Question of the day: How do you know summer is really over here in the Valley of the Sun? When the water temperature of your swimming pool drops from a tolerable 70 degrees to a much more intimidating 63 degrees in just the span of a week’s time. Of course summer never really ends here until perhaps December – you can still feel the strength of the sun on your skin when you take a walk down the street to the mailbox, and shorts and t-shirts still feel mighty fine. While the nighttime temps have started flirting with the high ’50s, the daytime highs are still well in the ’80s. So while it might be the end of summer pool-wise, the days are still betraying what the calendar says.