First cold day

I thought I'd be able to get away with keeping my jacket in the closet until October. Unfortunately, temperatured dropped today, with a low in the single digits (Celsius). It's going to be a temporary thing, with temperatures picking up in the next week.

That doesn't change the temperature inside my home, which has stuck at my summer thermostat setting of 78°F. Around this time of year, I end up dressing lighter for staying inside than for going outside.