C-152 pilot reported while enroute experiencing a complete avionics failure. Pilot diverted and landed safely.

Narrative

I was flying a C152 rented from a flight school located at ZZZ1. I departed ZZZ1 @ XA:52; with VFR Flight Following to ZZZ2. In vicinity of ZZZ3 my aircraft experienced a complete avionics failure @ XB:40; where I lost GPS; both radios; and my transponder. I was unable to communicate with TRACON; nor squawk 7600. I continued my flight path as to remain predictable while I trouble-shooted my avionics system with my checklist; and was not able to re-establish radio communications nor transponder function; and remained clear of B/C/D airspace in vicinity of ZZZZZ.I descended and could see the approach end of ZZZ's RWY XX; there was a low cloud layer quickly moving in; and the runway was clear. The aircraft I was in is not IFR capable; and I landed as soon as practical to avoid being NORDO in IMC.There were personnel working just north of RWY XX taxiway exit 1. I rocked my wings on approach to show tower and the personnel in sight I was NORDO; completed a safe landing on first 1/3 of runway; and immediately exited on Taxiway 1; shutdown; and called the tower with the help of the personnel near 1 to advise of situation. The field went IFR shortly after I arrived.Airport management was very understanding of the situation; and assisted in towing the aircraft to their hangar until the flight school maintenance can travel to ZZZ for repairs. The formal cause of the avionics failure will be available after maintenance diagnosis.