The Temperature Form is to record your body  temperature.  All sorts of things affect your BG's and your overall health.  Monitoring of your temperature may indicate a fever, allergies are acting up, sinus problems, flu, catching cold, etc.  It is a good idea to take your temperature daily.

The Temperature can be in degrees Fahrenheit or Centigrade depending where you live.  The selection between Centigrade and Fahrenheit is made the first time the software is used.  Currently the graphing of the Temperature data is disabled.