If you had read the label on the back of the bottle, along with
other good information, including a 1-800 number you can call, it
clearly states: "Do not use when temperature, glue or materials, are
below 55ºF."

That is the chalk point... when you see it you'll kno wwhy they call it
that.

BTW for TB-I (classic titebond) it's 50 for TB - III it's 47.