If you'd set up the website using git like git clone https://github.com/weather34/Meteobridge-Weather34-Template.git ./
while using the git bash command in your document root, then a simple git pull
would bring in all the changed files to your site.
Depending on how Brian set up the .gitignore, that may clobber your settings1.php when you do that, but running easyweathersetup.php again and recustomizing will fix it.
For my Cumulus distribution, I did provide protection to prevent clobbering the settings1.php when git pull is done.
(BTW, the various HWS distributions are NOT INTERCHANGABLE, so please do not port scripts from one distribution to another.. the results may cause the HWS site to stop working).