the best coon lure I have ever used in cold weather, without a doubt and no second best- is ProCoon by Stef Forget.
Its the only coon lure I have ever used that stands up to cold weather- and I've used the ones mentioned here, and many, many others including hardcore, which was what I decided was MY best bet coon lure for me. But hardcore fails in cold weather
I trap coon in as cold and snowy conditions as anyone, anywhere- I trap coon all winter, and that includes sub sero weather at times. And no, most coon don't "run" per se in that type of weather- but you would be surprised at the fact that some DO run.
ProCoon absolutley does not freeze, and it doesn't matter the temps, is always ready and waitng to work for you.
and yes, before someone says it- I do sell it- but I can sell you a bottle of any type or kind of coon lure you would like-
I recommend it so highly because of how it performs in the field- and THATS why I sell it.