While looking for handrail brackets at Lowes and other sources none actually state they are for outdoor use.
Is something being missed.
These look nice and inexpensive > https://www.lowes.com/pd/House-of-Fo...ets/1002337348
As do these > https://www.lowes.com/pd/Gatehouse-O...racket/3343262
Though it seems like it would be better if it had more than one screw to anchor it.
jtk