How would you put a temperature sensor into a buds and be certain that the sensor will only monitor the bud temperature and not the ambiant temperature?
Quickest way is to cut a bud/s and wrap in cotton wool or gauze with a temp. sensor and wrap tight with cling wrap (measure bud temp.)
Stick it in a plastic container with a temp. sensor (measure outside temp.) and put the whole the container in a freezer with a temp. sensor
Don't have to wait for winter.