If you're looking for a weather app that works with Android Auto and Android Automotive right now, there are fortunately two apps you can already try.

For safety reasons, Google restricts the types of applications developers can distribute for Android Auto and Android Automotive, both of which are used exclusively in vehicles. Rather than individual approvals, Google created a set of categories apps must fall under to be supported. As of this month, weather apps have been added to that list, opening the door to new apps that let you see weather info relevant to your current location or route.