For instance, yesterday as I was grabbing my bike from the garage, I got the sense that I was a bit overdressed. My rain jacket doesn't breathe too well (as most rain gear doesn't) and I decided to drop the soft shell I had on underneath it. It was the perfect choice. One day I'm riding with a t-shirt and a very light rain jacket, the next requires my heaviest winter hardshell with a layer of fleece under that.
I've said it before and I'll state it again, summer riding is easier. No thought or intentionality goes into your clothes for the commute. Shorts and t-shirt. No more. No less.
But today's ride home in the snow will look completely different than yesterday's commute in the rain, yet be only 24 hours apart. That's what winter bike commuting entails... but that's what makes it interesting. And it's completely worth it.
Get out there.