If Siri all the sudden is speaking temperature in Celsius and you want to change it back to Fahrenheit, there is an easy fix!
Just open the iPhone's weather app, click the "i" and then change "C" to "F". Below and if needed, please see the how to fix graphic I created.
I noticed Siri changed from speaking Fahrenheit to Celsius a few days ago. I am not sure how this happened and was thinking it could possibly be due to the overall issues she has been having connecting to the network.
What has been your experience with Siri?