Go here --> wxdata.weather.com/wxdata/sear… <-- put city name here.
Copy your location code, the letters and numbers after <loc id=
Go into edit and under variables you'll find this.

[Variables]
; LocationCode can be obtained at wxdata.weather.com/wxdata/sear…
LocationCode= <-- Put loc id here
; UnitOfMeasure can be "f" (Fahrenheit / Imperial) or "m" (Celsius / Metric)
UnitOfMeasure=m

Hope it helped!