Why is there an 6-8 degree difference in the temperature between Yahoo weather and Google weather?

I'm talking about the present temperature listed and the predicted high. I've been very careful to enter the exact same location at both sites. Does anyone have any opinions about which is more accurate?|||No one knows, it's the same as each TV news channel, they each give different weather predictions. Different temps. You can watch 5 different channels and get something different.