Once the temp dips below 30 degrees, this is my ticket for staying warm:
- Duofold lightweight Polypro first layer
- Duofold Expedition weight Polypro second layer
- Heavy Fleece Pullover Shirt
- Standard weight 6 pocket pants
- Walls Insulated Bib Coveralls
- Whitewater outdoors HEAVY insulated Fleece jacket
- Gander Mountain Guide Series archers jacket
- Very lightweight polypro socks
- medium weight Wool socks
- Lacross Burely 1200 Gram Thinsulate Rubber Boots
- Hand Warmer Muff stuffed with a couple of MyCoal Grabber hand warmers
- Fleece balacalva hood over a standard baseball style hat

Once it dips below 25 degrees I change to heavy weight wool sock (over the Polypro), Lacrosse SnoKing boots and a wool hat under the balacalva

This system has worked very well at keeping me relatively comfortable on stand in temperatures down to 3 degrees, not including wind chill.