Hi Deedubya,
Do you measure the temperature with the watch on your wrist?
If it is the case, the measurement is affected by the body temp.
You should remove it and wait 15' and check temp.
Yep, I agree... why to have a wrist watch if it is not in the wrist.
I think it is a general "problem" in all these kind watches (not only the
suunto ones).
F