Because you should have your pants charmed off while you’re checking to see if you should bring a sweater. Way more fun than asking stupid Siri, Hello Weather is the (why didn’t I think of THIS!?) idea from steffi gloor / kurt riedi and uses cardboard and light to tell the weather. It only shows today and tomorrow but you might get hit by a truck the day after tomorrow and not even care what the weather is anymore so it’s all good. Try it.