i finally had the oppurtunity to shoot my bow in canada. i was horrified by the creaking noise it made though. both limb sets too. it took me a little while to work out what was going on. turns out that the noise was coming from the string nocks. a little vaseline on the string loops restored a silent draw.
i've gone from +25-30C to negative temps and i'm sure that the cold weather was the cause.
also, i swear it shoots faster and quieter now.
could cold weather cause the string to have less "springyness"? string is endless dacron.
Cold air is usually drier air, so it's possible there's less moisture in the string. A drier dacron string will stretch less and potentially pick up a few fps. Think it would be difficult to detect without a chronograph though. Don't know what effect that would have on string noise. High tech strings may or may not behave the same way. Don't know.
My guess, might be some wax on the loops that got super hard and caused the noise.
the wax gets "creaky". had a deer spook as I drew 2 years ago when the string wax creaked about as much as a tiny krinkle of a gum wrapper... sometimes they amaze me more than I had given 'em credit for.