Weak toRockElectricIce ×1.6

Attacker	Type	Moveset	DPS
Regieleki	Electric	Lock OnThunder CageLegacy	92.0
Zeraora	Electric	Volt SwitchPlasma Fists	79.0
Zekrom	DragonElectric	Charge BeamFusion BoltLegacy	77.1
Xurkitree	Electric	Thunder ShockDischarge	76.2
Glimmora	RockPoison	Rock ThrowMeteor Beam	69.7
Rampardos	Rock	Smack DownRock Slide	69.1
Eternatus	PoisonDragon	Poison JabDynamax CannonLegacy	66.8
Deoxys	Psychic	Charge BeamThunderbolt	66.4
Gigalith	Rock	Lock OnMeteor BeamLegacy	66.3
Electivire	Electric	Thunder ShockWild Charge	66.0
Tyrantrum	RockDragon	Rock ThrowMeteor Beam	64.6
Raikou	Electric	Volt SwitchWild Charge	64.2

Rainy boosts the Electric attacks above. Partly cloudy and Windy boost Spearow.

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

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

Questions people ask

What is Spearow weak to in Pokémon GO?

Spearow takes 1.6 times from Rock, Electric and Ice.

What's the best counter to Spearow?

Regieleki with Lock On and Thunder Cage, worth 92.0 damage per second against Spearow's own defense. The full ranking is above.