If you want to change the location of the local weather, please edit the bash script weather-pull.sh and change the following line :
curl "http://wttr.in/aix-en-provence?T&1&Q&F&lang=fr" --silent --max-time 3 > /tmp/weather.tmp
by what you want, for example London :
curl "http://wttr.in/london?T&1&Q&F" --silent --max-time 3 > /tmp/weather.tmp
You can find more parameter and option on the wttr.in Github repository.