I was with a hiking group in SE Wisconsin in April and a couple hours in, we got hit with a spring snowstorm.
We knew it might hit us, and everyone was prepared. What struck me about that particular day was how quickly the well-worn trail was covered in snow. We all knew the area, so it was no big deal, but it served as a good reminder to be prepared for getting lost.
It’s so easy to rely on following the trail one can see clearly with one’s eyes, until weather conditions (or darkness) prevent it.
REI & NOLS have a very nice selection of courses to prepare oneself for backcountry first aid & orienteering without electronics.