[ChefCarnivore]

You will be OK. The outside temp device is to let you know that on a sunny hot day when you ride with the top down that it is not as freaken hot as it seems. It also works on cold days when it shows you that it is not as cold as it seems with the top down.
One other purpose is to let you know when a cold front is passing by and the weather is about to change. (Of course this only applies if the top is up.)