> The open source weather apps are not very accurate. Usually with a few degrees, and the radar is hit or miss.

If you are in the US, check out wX: https://f-droid.org/packages/joshuatee.wx/

It's fairly technical and it is very configurable (so it can take some fussing to get it set up the way you like), but it pulls data directly from NWS and has been very accurate for my family.