I recently switched my iPhone weather app to a different city where I was heading to a football game. It was great information to tell me what to pack in my car and what to wear to the game. This is important stuff to know in an Iowa September where either it’s 90 degrees or 40 with freezing rain and wind. I inadvertently left that particular city’s weather info on my phone app and every day since then, I would check the temperature before my daily bike ride so I knew what to wear.