I found this place hiking, looks ok to climb with only a crash pad. It's at the top of the cliff but outside the gate, so think you're allowed to climb it. One boulder, has a lot of holds and has about 40ft of climbing space, varying from heights of 5ft to 20ish ft. There is also a rock about 8ft tall and wide near it if you want to practice on that as well. both spots stay pretty dry, rain a few hours beforehand doesn't affect them.

If approaching from the parking lot on glen ave you will be able to see a cliff. work your way up to the top of it via the trails, then move off the main trail, to the smaller one that leads to the scenic overlook walk along the fence and you should be able to both spots within 100ft of each other.