Shouldn't it be "a half degree" or "half a degree" instead of "a half a degree"?
Native speaker’s answer
Rebecca
Yes, you are correct here! It would sound a little more natural if the speaker has said "half a degree" or "a half degree" instead of "a half a degree" here. Great job on picking up on that! Ex: We can increase the temperature by half a degree. Ex: Let's lower the temperature by a half degree.