The issue is likely that the temperature display is set to Farenheit instead of Celcius. Reference either the manual or the track guide for information on changing the temperature read-out to Celcius. The unit is flexible enough for use in the U.S.A. or abroad. As a result the unit has an option that allows the user to display temperature in either Farenheit or Celcius. Celcius temperatures are approximately half as much as Farenheit.