[drew870mitchell]

Weather Underground used to have a great tool for this that they called Road Trip Planner, but it broke and they took it down several years ago rather than fixing it. While trying to find the exact name i found a forum post listing a couple alternatives (Accuweather, get-there-dry, Weather Channel, EDD) that are also 404 now. But the hunt did lead me to aviationweather.gov which has hour-interval forecast coverage for US airspace e.g. https://aviationweather.gov/gfa/#temps

[yardshop]

I'm still very sad about the final demise of the weather.gov EDD! I didn't use that clothing feature, but found it to be the best radar. I especially liked using URLs to my own images as pointers on the map.