(amazing what google can do, eh?)
Climate change weather file generator
A Climate Change Weather File Generator (called CCWeatherGen) has been developed by the Built Environment programme of the Sustainable Energy Research Group (SERG) at the School of Civil Engineering and the Environment, University of Southampton.
Weather files are commonly used to allow the likely energy consumption of buildings to be simulated under typical weather conditions.
This free tool is MicrosoftÂ® Excel-based and uses the UKCIP02 climate change scenarios to transform CIBSE / Met Office present day TRY/DSY UK weather files into projected future weather files. The future weather files it generates are consistent with the UKCIP02 projections of climate change and compatible with the majority of building performance simulation programs.
The CCWeatherGen tool and accompanying documentation are available here: http://www.energy.soton.ac.uk/ccweathergen