This is not just a favourite app, it’s my current favourite app (April 2021). It was recommended by a friend, and it really is one of the best weather apps available. It does what it says on the tin (as the saying goes) and alerts you when rain is in your immediate area.
Unlike a normal weather app (although this one is also that) Rain Alarm Pro doesn’t just tell you the percentage chance of rain, it actually shows you where the rain is. It connects to rain radar centres and gives you a very accurate picture. You can see where the rain is, how intense it is, and which direction it’s travelling in.
So, instead of a general 50% chance of rain (for example) in your area, you can make a judgement that it’s actually going to miss you. This is invaluable for outings, picnics, and barbeques.
There’s a free version, but it’s well worth paying for the pro version and supporting an independent developer.