The meaning of dreaming about a thermometer is quite varied. Depending on the prevailing circumstances in the dream and the appearance of the thermometer the meaning of the dream can change quite drastically.
If in your dream you see a thermometer that is functional and accurate it means that soon someone will tell you quite useful information. This information will be very welcomed by you and this person will earn your gratitude.
If in your dream you see a broken or damaged thermometer it indicates that soon you might experience a downturn in your health levels. You might get ill struck down with malaise and experience the accompanying loss of energy.
The interpretation of a dream in which you see a thermometer which shows low temperature that is temperature that is noticeably lower that what you perceive it to be in dream is that you will take rational, coolheaded decisions within the next few months and this will contribute to your professional success.
If in the dream you see thermometer that shows high (hotter that what you perceive it to be) it means that you need to be careful of your friends not staying true to their words in the period that follows.
The meaning of a dream in which someone will give you a thermometer as a present is that you should not worry about various banalities in the next few months. You will need to direct your focus to the big issues if you want to maximize your success.
If you use a thermometer to measure your own body temperature it means you are worried about your health in real life.
If in the dream a thermometer that you were holding falls out of your hand and drops on the floor it means that you will soon miss an opportunity for advancement in your professional life which will drag your mood down temporarily.