Question: I'm working on a small project and am trying to find a way to get the very extended hour-by-hour forecast for a location. Most services (Darksky, etc.) seem to offer 7-day extended hourly forecasts, but I'm not able to find anything beyond that.

Does anyone have suggestions?

Answer: 
[Weather Underground](https://www.wunderground.com) and [Intellicast](http://www.intellicast.com) provide ten day forecasts in a beautiful (to a nerdy engineer) graphical format, in hourly increments. The skill in the last two to five days of those extended forecasts is suspect.
The best solution I've found so far is to use Dark Sky's [Time Machine](https://darksky.net/dev/docs#time-machine-request%20API). You can request the forecast for any number of days in the future, and beyond 10 days, the API simply returns historical data.