This app was mentioned in 4 comments, with an average of 1.75 upvotes
Try this one its my favorite weather app , i am not sure about lockscreen though as I am not on Pie yet. Also I have the premium version so no idea how good the free version is
https://play.google.com/store/apps/details?id=com.levelup.brightweather
are you rooted? you can take pics of intruders with a module.
for a weather app, i like Bright Weather, it doesn't get much love though
I use Bright Weather, looks pretty and it's accurate where i live