Quote Originally Posted by Andrew Breecher
Wool kilt hose are necessary as the temperature approaches freezing. I generally wear them below 50°F, but not always. When I hike in the cold I'll wear knee-high gaiters to keep snow out, and accomplish the same as kilt hose. If I'm backpacking, I'll just wear the gaiters; if I'm only out on a day hike I might wear kilt hose beneath the gaiters.

I've worn a four-yard PV kilt in 0°F weather, and it's fine as long as you're moving around. Then again, in that temperature you'll be cold no matter what, so it doesn't matter much if you're wearing a lighter or heavier kilt. Get inside by a warm fire, you nut!

Andrew.
Off topic but still useful.Gaiters are also useful when doing yardwork and you want to protect your legs-opearating a string trimmer,edger or around shrubbery,tall grass or anything that can stick,cut or scratch.REI is where I get mine.
I'm heading toward my first winter kilted and I've gotten a lot of good info here.