Take it up with the weathermen and/or weather stations. We don't control which systems are used for reporting temperatures as well as for temperature forecasts. No US citizens on this thread are going to change their thought process for one or two complaining UK persons.

No offense, but it really is just a method of measurement. It really shouldn't be causing you any butthurt. Celsius and Farenheit are so directy related that* Kelvin is actually the best form of measuring heat, which is the only SI unit, but you don't see me going around complaining the UK people need to get with the program and measure in Kelvin.