Those Fedex planes can be tracked on flightaware, but finding the
right plane would require clicking on flightware for the closest
airport, then waiting for the noise.

http://flightaware.com/live/flight/FDX1825
http://flightaware.com/live/flight/FDX84
I don't know flight routes over the central valley. Perhaps they land
at Mather.

In the dead of the night, those cargo planes sound mighty loud.

airplane noise  !!!  .....  hahah ah a ......  years ago I used to
live in a trailer park  right off the end of the runway ( Pope ) 
in  a place called  Spring Lake , NC .  every morning they'd  
warm up 100s of huey's .  the rumble and vibration would knock
pictures off the walls and make stuff fall off tables onto
 the floor. no problems waking up in that place.  THATS mighty
loud airplane noise !  ya yay a hah a hah ha