DAK,
there is not much along the southern San Joaquin Valley Desert. Your best bet is to get up to Gorman and turn right (west-ish) and get up high into the Pinion Mountain area. Lots of N.F. and BLM areas up there near Frasier Park. It will be a little cooler than down in the desert.
Another idea is from the 5 or 99 to take Hwy 58 S.E. from Bakersfield over Tehachapi mts. and find a campsite nearby in BLM land. Also slightly higher (5K feet) elevation to take the temper out of the heat. Then ride the backside of the San Gabriels and approach your home from the N.E. side.
I lived in the area for the first 60 years of my life and have seen a slow transition to desert in the last 5 years.
Southern california, LA and vicinity area is devoid of good camping opportunities unless you get up into the mountains. It is not RV friendly.
Good luck. Bring some water with you when you return.
jefe
