This is a userscript that clicks the "HRRR" button at the bottom of Windy.com, defaulting you to the 3km resolution HRRR forecast instead of the 9km resolution ECMWF forecast.
Not affiliated with Windy.
This is distributed as a userscript, so you need a browser extension that runs userscripts.
Violentmonkey can be installed in Firefox and Chromium-based browsers. Userscripts works in Safari.
Then, visit hrrr_windy.user.js and Confirm installation.
(Alternatively, create a new script and paste in the entire hrrr_windy.user.js source.)