Dragonman:
Pappy is in the States and we use the Fahrenheit system here, "in the teens" is well below freezing (0* C = 32* F). I live in Florida, so the only frozen things I deal with come out of the freezer. I suspect bow breakage has to more do with the low humidity associated with freezing weather than the actual temperature. Our humidity level was at 97% last night, and I had to turn the air conditioning on again just to fall asleep, so take the advice from someone that has more experience with this than myself.
Swamp