Dont just think of tempraure. I have worn my kilts as low as 7F at that is actually warmer than it is at 40F. Why? The air is usually damp and slightly windy at 40, while it is dry as a bone under 20.

Either way though it is still warmer than pants. Thinking kilts are colder is a psychological think. Try it yourself somitime. Go outside in pants when the temp is below 40. Then go inside, change into a kilt (I do reccomend a real pair of kilt hose) and then go back out.

Unless it is really windy (and I mean tornado weather) you will be warmer in a kilt (even the contemporary non wool variety). Why? The kilt acts like a mitten, holding a pocket of warm air around you instead of pants allowing all of your body heat to escape directly into the air.

Now I never would have believed this post, had I not found out for my self. Three years ago I went to a New Years party in a UK (and not a heavy Workman's). It was 17F that night, and at midnight someone decided that we should all go ourside for the countdown. We only ended up staying outside for nearly 10 min, and I was one of the few people that was not freezing by the time we went back in. Sine then I have constantly surprised myself that I'm not cold, though people do ask all the time if I am.

Adam