Product review (4 stars): Does show Fahrenheit!
I was going to return this but the cost and my refined made it not even worth it.  I was going to return it because I thought it would only show in Celsius and I need Fahrenheit.  I was going to use it in my babies room but decided I might as well use it if I can't return it and just put it in our bedroom.  Well I'm sending it up this afternoon and I pull out the little kickstand and there's a button that you can switch to go from Celsius to Fahrenheit.  I wish this was more clear on the box or anything. So if you're looking for Fahrenheit this actually will work.