When i travel by motocycle in winter, it is common to not being raining where i started the trip, but raining on the city i was going to go or somewhere in the road. So, i wouldn't be prepared for the rain waiting for me somewhere along my path.
I build this app for this, it will show if its raining on the road to your destination.
It uses flutter on the app and the map is generated on a server that you can set as well.
You can get the server side script here.