Weak toFighting ×1.6

Attacker	Type	Moveset	DPS
Lucario	FightingSteel	Force PalmAura SphereLegacy	30.2
Pheromosa	BugFighting	Low KickFocus Blast	27.7
Terrakion	RockFighting	Double KickSacred SwordLegacy	27.6
Blaziken	FireFighting	CounterAura Sphere	27.4
Kartana	GrassSteel	Fury CutterSacred Sword	26.1
Conkeldurr	Fighting	Force PalmFocus Blast	25.2
Keldeo	WaterFighting	Low KickSacred Sword	25.0
Breloom	GrassFighting	Force PalmDynamic Punch	24.9
Urshifu	Fighting	CounterDynamic Punch	24.7
Eternatus	PoisonDragon	Poison JabDynamax CannonLegacy	24.6
Marshadow	FightingGhost	CounterClose Combat	24.1
Mewtwo	Psychic	CounterFocus BlastLegacy	24.1

Overcast boosts the Fighting attacks above. Partly cloudy boosts Kecleon.

Level 40, 15 attack IV, costed against Kecleon's own defense and typing, one per evolution family.

Kecleon's moveset, CP and shiny All counters Raid board

Questions people ask

What is Kecleon weak to in Pokémon GO?

Kecleon takes 1.6 times from Fighting.

What's the best counter to Kecleon?

Lucario with Force Palm and Aura Sphere, worth 30.2 damage per second against Kecleon's own defense. The full ranking is above.