Do they have an outdoor ATM, and does it accept cash deposits?

Yea they do so does the one on Barkley and Orleans

I believe all WECU locations have an outside/after-hours ATM for deposit, between WECU account transfers, and cash withdraws. (All WECU ATMs are always NO transaction fee, even with other bank accounts ! )

As well as the Ferndale location.

Yes

Yes, yes.