Telling otherwise-competent adults to pack an umbrella, wear a sweater, or go to the bathroom before they leave is one big way people act old. It’s as if you can’t stop being the world’s mom, or you’re so highly invested in knowing best that you’ve got to point out the obvious, or you’re so insecure about your stature that you’ve got to take over the management of the most mundane tasks.
Lighten up. Let other people take care of themselves. You in the process will feel younger and freer. And if they’re chilly later, they’ll have only themselves to blame.