Or, just watch the old folk signs which are usually pretty accurate. Falling smoke from chimneys (falling barometric pressure), animal behavior, particularly birds gone to ground stuffing themselves, ring around the moon (which is ice crystals), several more. I went to school at WCU and the locals there always said if you could smell the paper mill at Canton in Waynesville, it was going to snow and it always did.
We had a similar thread a couple of years ago when a major snowstorm that was predicted to hit NYC turned into a minor snowfall.
Everyone was complaining that "the National Weather Service got it wrong," but I had a sense that it wasn't as wrong as we thought. I was up early that morning and saw the most brilliant red sunrise I've ever seen on the East Coast, so I figured there was a whopper of a storm out there east of New York City.
Sure enough, eastern Long Island and the Providence and Boston areas got 24+ inches of snow.