Weak toFightingGroundSteelWaterGrass ×1.6

Attacker	Type	Moveset	DPS
Lucario	FightingSteel	Force PalmAura SphereLegacy	58.2
Kartana	GrassSteel	Razor LeafLeaf Blade	55.7
Pheromosa	BugFighting	Low KickFocus Blast	53.3
Terrakion	RockFighting	Double KickSacred SwordLegacy	53.1
Blaziken	FireFighting	CounterAura Sphere	52.6
Metagross	SteelPsychic	Bullet PunchMeteor MashLegacy	50.9
Inteleon	Water	Water GunHydro CannonLegacy	50.2
Kyogre	Water	WaterfallOrigin PulseLegacy	50.0
Breloom	GrassFighting	Force PalmGrass KnotLegacy	50.0
Tinkaton	FairySteel	Fairy WindGigaton HammerLegacy	49.4
Groudon	Ground	Mud ShotPrecipice BladesLegacy	49.0
Conkeldurr	Fighting	Force PalmFocus Blast	48.5

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

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

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

Questions people ask

What is Rolycoly weak to in Pokémon GO?

Rolycoly takes 1.6 times from Fighting, Ground, Steel, Water and Grass.

What's the best counter to Rolycoly?

Lucario with Force Palm and Aura Sphere, worth 58.2 damage per second against Rolycoly's own defense. The full ranking is above.