My job has me (or can have me) outside 52 weeks a year... on towers, roof tops, grain silos or anything else up-in-the-air. The "Cabin Fever" syndrome doesn't really hit me. The body sort'a acclimates to where the cold doesn't bother much and you learn how to dress warm, but loose so you can work. I spend my weekends outside doing pretty much the same thing I'd be doing spring threw fall (except cutting the damn grass). When it drops below zero, or the wind is blowing, a fella' just pulls his cap down onto the ears and turns his collar up. <shrug> I am gettin' sick of moving snow though, and wading through it to cut wood for the stove.
It's hard to believe I haven't "stuck" the pickup yet and needed to winch it out... had it sittin' in snow up to the headlights last weekend when I chained up the dead tree I'd just dropped... put it in gear and walked right up to the trail. 'Course it was -17 then, wouldn't try that today, the weather has warmed up to +20 or so (sweat-shirt weather)... that snow would suck it in, never let go.
Heck, if'n it stays above +15 this weekend we might just have a B-B-Q over the fire-pit... if'n I can find it under all the snow.