You could try looking through the [PCMDI CMIP5 archive](http://cmip-pcmdi.llnl.gov/cmip5/) of climate model simulation output, if you sign up for an account and learn their web interface. The [KNMI Climate Explorer](http://climexp.knmi.nl/) has a mirror of some of this with an easier interface. Many of the files are in [NetCDF](http://www.unidata.ucar.edu/software/netcdf/) format.