I was a little bit perturbed when I recently got my DM 7025 and the only weather forecasts I could get were for Every other Country but the UK, Si I wrote the attached file, If you like it and Your Town or City isnt in it I will add it if you mail me, You need Dreambox Control Centre to ftp it.
First of all unzip it to a local folder then connect via dcc the file needs to replace the weather.xml file in etc/weather/weather.xml once it is done you go to blue panel Extras/Settings then RSS Reader / Weather then when you are there press the red button and select the town closest to you, If you want to see up to 10 days ahead you can do this one day at a time by pressing right button

Updated today Monday 7th January 2045 with many more locations including for Ireland & Scotland