I’ve been working on Wayther for a few years now. It's an iOS app that shows the forecast at each point of your journey, timed to when you are expected to get there. It allows you to compare alternative routes, adjust your departure time and see how rain, wind, visibility and temperature may affect your drive.
I know this is a pretty niche topic that might not resonate with the average HN audience, but if you happen to drive from time to time (casual driver, trucker, motorbike driver, RVer, etc.), I’d love to get your feedback!
Have a nice day, Thanks, - axel