Weak toRock ×2.56SteelFireElectric ×1.6

Attacker	Type	Moveset	DPS
Glimmora	RockPoison	Rock ThrowMeteor Beam	33.3
Rampardos	Rock	Smack DownRock Slide	33.0
Tyrantrum	RockDragon	Rock ThrowMeteor Beam	30.9
Gigalith	Rock	Lock OnMeteor BeamLegacy	30.9
Rhyperior	GroundRock	Smack DownRock WreckerLegacy	29.9
Terrakion	RockFighting	Smack DownRock Slide	29.3
Blacephalon	FireGhost	IncinerateMind BlownLegacy	29.0
Tyranitar	RockDark	Smack DownStone EdgeLegacy	28.2
Regieleki	Electric	Lock OnThunder CageLegacy	27.5
Lycanroc	Rock	Rock ThrowStone Edge	26.9
Aggron	SteelRock	Smack DownMeteor Beam	26.1
Aerodactyl	RockFlying	Rock ThrowRock Slide	25.8

Partly cloudy boosts the Rock attacks above. Snow and Windy boost Articuno.

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

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

Questions people ask

What is Articuno weak to in Pokémon GO?

Articuno takes 2.56 times damage from Rock, and 1.6 times from Steel, Fire and Electric.

What's the best counter to Articuno?

Glimmora with Rock Throw and Meteor Beam, worth 33.3 damage per second against Articuno's own defense. The full ranking is above.